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Entry version 224 (08 May 2019)
Sequence version 6 (11 Jan 2011)
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Protein

Calpain-2 catalytic subunit

Gene

CAPN2

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Calcium-regulated non-lysosomal thiol-protease which catalyzes limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction. Proteolytically cleaves MYOC at 'Arg-226' (PubMed:17650508). Proteolytically cleaves CPEB3 following neuronal stimulation which abolishes CPEB3 translational repressor activity, leading to translation of CPEB3 target mRNAs (By similarity).By similarity1 Publication

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

  • Broad endopeptidase specificity. EC:3.4.22.53

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Ca2+By similarityNote: Binds 7 Ca2+ ions.By similarity

<p>This subsection of the ‘Function’ section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Activated by 200-1000 micromolar concentrations of calcium and inhibited by calpastatin.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi89Calcium 3; via carbonyl oxygenBy similarity1
Metal bindingi91Calcium 3; via carbonyl oxygenBy similarity1
Metal bindingi96Calcium 3By similarity1
<p>This subsection of the ‘Function’ section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei105By similarity1
Metal bindingi175Calcium 3By similarity1
Metal bindingi229Calcium 2By similarity1
Metal bindingi230Calcium 2By similarity1
Active sitei262By similarity1
Active sitei286By similarity1
Metal bindingi292Calcium 4By similarity1
Metal bindingi299Calcium 4By similarity1
Metal bindingi323Calcium 4; via carbonyl oxygenBy similarity1
Metal bindingi542Calcium 5; via carbonyl oxygenBy similarity1
Metal bindingi545Calcium 5By similarity1
Metal bindingi547Calcium 5; via carbonyl oxygenBy similarity1
Metal bindingi552Calcium 5By similarity1
Metal bindingi585Calcium 6By similarity1
Metal bindingi587Calcium 6By similarity1
Metal bindingi589Calcium 6; via carbonyl oxygenBy similarity1
Metal bindingi591Calcium 6; via carbonyl oxygenBy similarity1
Metal bindingi596Calcium 6By similarity1
Metal bindingi615Calcium 7By similarity1
Metal bindingi617Calcium 7By similarity1
Metal bindingi619Calcium 7; via carbonyl oxygenBy similarity1
Metal bindingi621Calcium 7; via carbonyl oxygenBy similarity1
Metal bindingi626Calcium 7By similarity1
Metal bindingi658Calcium 1By similarity1
Metal bindingi661Calcium 1By similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ section specifies the position(s) of the calcium-binding region(s) within the protein. One common calcium-binding motif is the EF-hand, but other calcium-binding motifs also exist.<p><a href='/help/ca_bind' target='_top'>More...</a></p>Calcium bindingi585 – 5961Add BLAST12
Calcium bindingi615 – 6262Add BLAST12

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionHydrolase, Protease, Thiol protease
LigandCalcium, Metal-binding

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
3.4.22.53 2681

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-HSA-1474228 Degradation of the extracellular matrix
R-HSA-8862803 Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models

SIGNOR Signaling Network Open Resource

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SIGNORi
P17655

Protein family/group databases

MEROPS protease database

More...
MEROPSi
C02.002

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Calpain-2 catalytic subunit (EC:3.4.22.53)
Alternative name(s):
Calcium-activated neutral proteinase 2
Short name:
CANP 2
Calpain M-type
Calpain large polypeptide L2
Calpain-2 large subunit
Millimolar-calpain
Short name:
M-calpain
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:CAPN2
Synonyms:CANPL2
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiHomo sapiens (Human)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri9606 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000005640 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 1

Organism-specific databases

Human Gene Nomenclature Database

More...
HGNCi
HGNC:1479 CAPN2

Online Mendelian Inheritance in Man (OMIM)

More...
MIMi
114230 gene

neXtProt; the human protein knowledge platform

More...
neXtProti
NX_P17655

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Cell membrane, Cytoplasm, Membrane

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Organism-specific databases

DisGeNET

More...
DisGeNETi
824

Open Targets

More...
OpenTargetsi
ENSG00000162909

The Pharmacogenetics and Pharmacogenomics Knowledge Base

More...
PharmGKBi
PA26060

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL2382

IUPHAR/BPS Guide to PHARMACOLOGY

More...
GuidetoPHARMACOLOGYi
2337

Polymorphism and mutation databases

BioMuta curated single-nucleotide variation and disease association database

More...
BioMutai
CAPN2

Domain mapping of disease mutations (DMDM)

More...
DMDMi
317373596

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemovedCombined sources1 Publication
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section describes a propeptide, which is a part of a protein that is cleaved during maturation or activation. Once cleaved, a propeptide generally has no independent biological function.<p><a href='/help/propep' target='_top'>More...</a></p>PropeptideiPRO_00000264872 – 19Anchors to the small subunitSequence analysisAdd BLAST18
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000002648820 – 700Calpain-2 catalytic subunitAdd BLAST681

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei2N-acetylalanineCombined sources1

Keywords - PTMi

Acetylation

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
P17655

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
P17655

MaxQB - The MaxQuant DataBase

More...
MaxQBi
P17655

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P17655

PeptideAtlas

More...
PeptideAtlasi
P17655

PRoteomics IDEntifications database

More...
PRIDEi
P17655

ProteomicsDB human proteome resource

More...
ProteomicsDBi
53499
53500 [P17655-2]

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P17655

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...
PhosphoSitePlusi
P17655

SwissPalm database of S-palmitoylation events

More...
SwissPalmi
P17655

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Ubiquitous.

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSG00000162909 Expressed in 233 organ(s), highest expression level in nasal cavity epithelium

ExpressionAtlas, Differential and Baseline Expression

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ExpressionAtlasi
P17655 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
P17655 HS

Organism-specific databases

Human Protein Atlas

More...
HPAi
HPA024470

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Forms a heterodimer with a small (regulatory) subunit (CAPNS1). Interacts with CPEB3; this leads to cleavage of CPEB3.By similarity

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

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BioGridi
107274, 57 interactors

Protein interaction database and analysis system

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IntActi
P17655, 16 interactors

Molecular INTeraction database

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MINTi
P17655

STRING: functional protein association networks

More...
STRINGi
9606.ENSP00000295006

Chemistry databases

BindingDB database of measured binding affinities

More...
BindingDBi
P17655

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1700
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Select the link destinations:

Protein Data Bank Europe

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PDBei

Protein Data Bank RCSB

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RCSB PDBi

Protein Data Bank Japan

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PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1KFUX-ray2.50L2-700[»]
1KFXX-ray3.15L2-700[»]
2NQAX-ray2.20A/B48-346[»]

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P17655

Database of comparative protein structure models

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ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

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MobiDBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P17655

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini45 – 344Calpain catalyticPROSITE-ProRule annotationAdd BLAST300
Domaini572 – 605EF-hand 1PROSITE-ProRule annotationAdd BLAST34
Domaini602 – 637EF-hand 2PROSITE-ProRule annotationAdd BLAST36
Domaini667 – 700EF-hand 3PROSITE-ProRule annotationAdd BLAST34

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni345 – 514Domain IIIAdd BLAST170
Regioni515 – 529LinkerAdd BLAST15
Regioni530 – 700Domain IVAdd BLAST171

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the peptidase C2 family.Curated

Keywords - Domaini

Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

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eggNOGi
KOG0045 Eukaryota
ENOG410XP0B LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000154784

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P17655

KEGG Orthology (KO)

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KOi
K03853

Identification of Orthologs from Complete Genome Data

More...
OMAi
WYELKKA

Database of Orthologous Groups

More...
OrthoDBi
704215at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P17655

TreeFam database of animal gene trees

More...
TreeFami
TF314748

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00214 Calpain_III, 1 hit
cd00044 CysPc, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR033883 C2_III
IPR022684 Calpain_cysteine_protease
IPR022682 Calpain_domain_III
IPR022683 Calpain_III
IPR036213 Calpain_III_sf
IPR029539 CAPN2
IPR011992 EF-hand-dom_pair
IPR018247 EF_Hand_1_Ca_BS
IPR002048 EF_hand_dom
IPR038765 Papain-like_cys_pep_sf
IPR000169 Pept_cys_AS
IPR001300 Peptidase_C2_calpain_cat

The PANTHER Classification System

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PANTHERi
PTHR10183:SF268 PTHR10183:SF268, 1 hit

Pfam protein domain database

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Pfami
View protein in Pfam
PF01067 Calpain_III, 1 hit
PF13833 EF-hand_8, 1 hit
PF00648 Peptidase_C2, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00704 CALPAIN

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00720 calpain_III, 1 hit
SM00230 CysPc, 1 hit

Superfamily database of structural and functional annotation

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SUPFAMi
SSF47473 SSF47473, 1 hit
SSF49758 SSF49758, 1 hit
SSF54001 SSF54001, 1 hit

PROSITE; a protein domain and family database

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PROSITEi
View protein in PROSITE
PS50203 CALPAIN_CAT, 1 hit
PS00018 EF_HAND_1, 2 hits
PS50222 EF_HAND_2, 3 hits
PS00139 THIOL_PROTEASE_CYS, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>.<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequences (2+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

This entry describes 2 <p>This subsection of the ‘Sequence’ section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoformsi produced by alternative splicing. AlignAdd to basket

This entry has 2 described isoforms and 1 potential isoform that is computationally mapped.Show allAlign All

Isoform 1 (identifier: P17655-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MAGIAAKLAK DREAAEGLGS HDRAIKYLNQ DYEALRNECL EAGTLFQDPS
60 70 80 90 100
FPAIPSALGF KELGPYSSKT RGIEWKRPTE ICADPQFIIG GATRTDICQG
110 120 130 140 150
ALGDCWLLAA IASLTLNEEI LARVVPLNQS FQENYAGIFH FQFWQYGEWV
160 170 180 190 200
EVVVDDRLPT KDGELLFVHS AEGSEFWSAL LEKAYAKING CYEALSGGAT
210 220 230 240 250
TEGFEDFTGG IAEWYELKKP PPNLFKIIQK ALQKGSLLGC SIDITSAADS
260 270 280 290 300
EAITFQKLVK GHAYSVTGAE EVESNGSLQK LIRIRNPWGE VEWTGRWNDN
310 320 330 340 350
CPSWNTIDPE ERERLTRRHE DGEFWMSFSD FLRHYSRLEI CNLTPDTLTS
360 370 380 390 400
DTYKKWKLTK MDGNWRRGST AGGCRNYPNT FWMNPQYLIK LEEEDEDEED
410 420 430 440 450
GESGCTFLVG LIQKHRRRQR KMGEDMHTIG FGIYEVPEEL SGQTNIHLSK
460 470 480 490 500
NFFLTNRARE RSDTFINLRE VLNRFKLPPG EYILVPSTFE PNKDGDFCIR
510 520 530 540 550
VFSEKKADYQ AVDDEIEANL EEFDISEDDI DDGFRRLFAQ LAGEDAEISA
560 570 580 590 600
FELQTILRRV LAKRQDIKSD GFSIETCKIM VDMLDSDGSG KLGLKEFYIL
610 620 630 640 650
WTKIQKYQKI YREIDVDRSG TMNSYEMRKA LEEAGFKMPC QLHQVIVARF
660 670 680 690 700
ADDQLIIDFD NFVRCLVRLE TLFKIFKQLD PENTGTIELD LISWLCFSVL
Length:700
Mass (Da):79,995
Last modified:January 11, 2011 - v6
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i8CF8294351A024E3
GO
Isoform 2 (identifier: P17655-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     1-78: Missing.
     79-79: T → M

Note: No experimental confirmation available.
Show »
Length:622
Mass (Da):71,476
Checksum:i60ED3A3498F6DD5D
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
C9JWY7C9JWY7_HUMAN
Calpain-2 catalytic subunit
CAPN2
131Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>

<p>This subsection of the ‘Sequence’ section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence AAH07686 differs from that shown. Contaminating sequence. Potential poly-A sequence.Curated
The sequence AAH11828 differs from that shown. Contaminating sequence. Potential poly-A sequence.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti73 – 74IE → MR in AAA35645 (PubMed:2852952).Curated2
Sequence conflicti256Q → K in AAF99682 (PubMed:10944468).Curated1
Sequence conflicti300N → S in AAF99682 (PubMed:10944468).Curated1
Sequence conflicti534F → V in AAA35645 (PubMed:2852952).Curated1
Sequence conflicti534F → V in AAF99682 (PubMed:10944468).Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural variantiVAR_01443522D → ECombined sources5 PublicationsCorresponds to variant dbSNP:rs25655Ensembl.1
Natural variantiVAR_02140468S → G2 PublicationsCorresponds to variant dbSNP:rs2230083Ensembl.1
Natural variantiVAR_021405476K → R1 PublicationCorresponds to variant dbSNP:rs9804140Ensembl.1
Natural variantiVAR_021406521E → Q1 PublicationCorresponds to variant dbSNP:rs28370127Ensembl.1
Natural variantiVAR_014436568K → Q1 PublicationCorresponds to variant dbSNP:rs17599Ensembl.1
Natural variantiVAR_021407677K → Q1 PublicationCorresponds to variant dbSNP:rs2230082Ensembl.1

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes the sequence of naturally occurring alternative protein isoform(s). The changes in the amino acid sequence may be due to alternative splicing, alternative promoter usage, alternative initiation, or ribosomal frameshifting.<p><a href='/help/var_seq' target='_top'>More...</a></p>Alternative sequenceiVSP_0430271 – 78Missing in isoform 2. 1 PublicationAdd BLAST78
Alternative sequenceiVSP_04302879T → M in isoform 2. 1 Publication1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

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DDBJi
Links Updated
M23254 mRNA Translation: AAA35645.1
AF261089 mRNA Translation: AAF99682.1
AK316211 mRNA Translation: BAH14582.1
AY835586 Genomic DNA Translation: AAV80421.1
AC096542 Genomic DNA No translation available.
AC099065 Genomic DNA No translation available.
BC007686 mRNA Translation: AAH07686.1 Sequence problems.
BC011828 mRNA Translation: AAH11828.1 Sequence problems.
BC021303 mRNA Translation: AAH21303.1
J04700 Genomic DNA Translation: AAA52760.1

The Consensus CDS (CCDS) project

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CCDSi
CCDS31035.1 [P17655-1]
CCDS53478.1 [P17655-2]

Protein sequence database of the Protein Information Resource

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PIRi
S10590 CIHUH2

NCBI Reference Sequences

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RefSeqi
NP_001139540.1, NM_001146068.1 [P17655-2]
NP_001739.2, NM_001748.4 [P17655-1]

Genome annotation databases

Ensembl eukaryotic genome annotation project

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Ensembli
ENST00000295006; ENSP00000295006; ENSG00000162909 [P17655-1]
ENST00000433674; ENSP00000413158; ENSG00000162909 [P17655-2]

Database of genes from NCBI RefSeq genomes

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GeneIDi
824

KEGG: Kyoto Encyclopedia of Genes and Genomes

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KEGGi
hsa:824

UCSC genome browser

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UCSCi
uc001hob.5 human [P17655-1]

Keywords - Coding sequence diversityi

Alternative splicing, Polymorphism

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

<p>This subsection of the <a href="http://www.uniprot.org/manual/cross_references_section">Cross-references</a> section provides links to various web resources that are relevant for a specific protein.<p><a href='/help/web_resource' target='_top'>More...</a></p>Web resourcesi

NIEHS-SNPs

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M23254 mRNA Translation: AAA35645.1
AF261089 mRNA Translation: AAF99682.1
AK316211 mRNA Translation: BAH14582.1
AY835586 Genomic DNA Translation: AAV80421.1
AC096542 Genomic DNA No translation available.
AC099065 Genomic DNA No translation available.
BC007686 mRNA Translation: AAH07686.1 Sequence problems.
BC011828 mRNA Translation: AAH11828.1 Sequence problems.
BC021303 mRNA Translation: AAH21303.1
J04700 Genomic DNA Translation: AAA52760.1
CCDSiCCDS31035.1 [P17655-1]
CCDS53478.1 [P17655-2]
PIRiS10590 CIHUH2
RefSeqiNP_001139540.1, NM_001146068.1 [P17655-2]
NP_001739.2, NM_001748.4 [P17655-1]

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1KFUX-ray2.50L2-700[»]
1KFXX-ray3.15L2-700[»]
2NQAX-ray2.20A/B48-346[»]
SMRiP17655
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi107274, 57 interactors
IntActiP17655, 16 interactors
MINTiP17655
STRINGi9606.ENSP00000295006

Chemistry databases

BindingDBiP17655
ChEMBLiCHEMBL2382
GuidetoPHARMACOLOGYi2337

Protein family/group databases

MEROPSiC02.002

PTM databases

iPTMnetiP17655
PhosphoSitePlusiP17655
SwissPalmiP17655

Polymorphism and mutation databases

BioMutaiCAPN2
DMDMi317373596

Proteomic databases

EPDiP17655
jPOSTiP17655
MaxQBiP17655
PaxDbiP17655
PeptideAtlasiP17655
PRIDEiP17655
ProteomicsDBi53499
53500 [P17655-2]

Protocols and materials databases

The DNASU plasmid repository

More...
DNASUi
824
Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000295006; ENSP00000295006; ENSG00000162909 [P17655-1]
ENST00000433674; ENSP00000413158; ENSG00000162909 [P17655-2]
GeneIDi824
KEGGihsa:824
UCSCiuc001hob.5 human [P17655-1]

Organism-specific databases

Comparative Toxicogenomics Database

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CTDi
824
DisGeNETi824

GeneCards: human genes, protein and diseases

More...
GeneCardsi
CAPN2
HGNCiHGNC:1479 CAPN2
HPAiHPA024470
MIMi114230 gene
neXtProtiNX_P17655
OpenTargetsiENSG00000162909
PharmGKBiPA26060

GenAtlas: human gene database

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GenAtlasi
Search...

Phylogenomic databases

eggNOGiKOG0045 Eukaryota
ENOG410XP0B LUCA
GeneTreeiENSGT00940000154784
InParanoidiP17655
KOiK03853
OMAiWYELKKA
OrthoDBi704215at2759
PhylomeDBiP17655
TreeFamiTF314748

Enzyme and pathway databases

BRENDAi3.4.22.53 2681
ReactomeiR-HSA-1474228 Degradation of the extracellular matrix
R-HSA-8862803 Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models
SIGNORiP17655

Miscellaneous databases

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

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ChiTaRSi
CAPN2 human
EvolutionaryTraceiP17655

The Gene Wiki collection of pages on human genes and proteins

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GeneWikii
CAPN2

Database of phenotypes from RNA interference screens in Drosophila and Homo sapiens

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GenomeRNAii
824

Protein Ontology

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PROi
PR:P17655

The Stanford Online Universal Resource for Clones and ESTs

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SOURCEi
Search...

Gene expression databases

BgeeiENSG00000162909 Expressed in 233 organ(s), highest expression level in nasal cavity epithelium
ExpressionAtlasiP17655 baseline and differential
GenevisibleiP17655 HS

Family and domain databases

CDDicd00214 Calpain_III, 1 hit
cd00044 CysPc, 1 hit
InterProiView protein in InterPro
IPR033883 C2_III
IPR022684 Calpain_cysteine_protease
IPR022682 Calpain_domain_III
IPR022683 Calpain_III
IPR036213 Calpain_III_sf
IPR029539 CAPN2
IPR011992 EF-hand-dom_pair
IPR018247 EF_Hand_1_Ca_BS
IPR002048 EF_hand_dom
IPR038765 Papain-like_cys_pep_sf
IPR000169 Pept_cys_AS
IPR001300 Peptidase_C2_calpain_cat
PANTHERiPTHR10183:SF268 PTHR10183:SF268, 1 hit
PfamiView protein in Pfam
PF01067 Calpain_III, 1 hit
PF13833 EF-hand_8, 1 hit
PF00648 Peptidase_C2, 1 hit
PRINTSiPR00704 CALPAIN
SMARTiView protein in SMART
SM00720 calpain_III, 1 hit
SM00230 CysPc, 1 hit
SUPFAMiSSF47473 SSF47473, 1 hit
SSF49758 SSF49758, 1 hit
SSF54001 SSF54001, 1 hit
PROSITEiView protein in PROSITE
PS50203 CALPAIN_CAT, 1 hit
PS00018 EF_HAND_1, 2 hits
PS50222 EF_HAND_2, 3 hits
PS00139 THIOL_PROTEASE_CYS, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiCAN2_HUMAN
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P17655
Secondary accession number(s): A6NDG7
, B7ZA96, E7ES58, Q16738, Q6PJT3, Q8WU26, Q9HBB1
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 1, 1990
Last sequence update: January 11, 2011
Last modified: May 8, 2019
This is version 224 of the entry and version 6 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Human chromosome 1
    Human chromosome 1: entries, gene names and cross-references to MIM
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
  4. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  5. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  6. Peptidase families
    Classification of peptidase families and list of entries
  7. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
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