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Entry version 139 (02 Jun 2021)
Sequence version 1 (01 Apr 1988)
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Protein

Calsequestrin-1

Gene

CASQ1

Organism
Oryctolagus cuniculus (Rabbit)
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

Calsequestrin is a high-capacity, moderate affinity, calcium-binding protein and thus acts as an internal calcium store in muscle. Calcium ions are bound by clusters of acidic residues at the protein surface, often at the interface between subunits. Can bind around 80 Ca2+ ions. Regulates the release of lumenal Ca2+ via the calcium release channel RYR1; this plays an important role in triggering muscle contraction. Negatively regulates store-operated Ca2+ entry (SOCE) activity (By similarity).

1 PublicationBy similarity6 Publications

Caution

Phosphorylated at very low, substoichiometric levels when isolated from skeletal muscle sarcoplasmic reticulum (PubMed:1985907). Can be phosphorylated by CK2 at Thr-381 (in vitro), albeit with low efficiency, suggesting this is not a physiological CK2 substrate (PubMed:1985907). Not phosphorylated at Thr-381 (PubMed:22170046).Curated2 Publications

<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 functionMuscle protein
LigandCalcium, Metal-binding

<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%5Fand%5Ftaxonomy%5Fsection">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:
Calsequestrin-1
Alternative name(s):
Aspartactin
Calsequestrin, skeletal muscle isoform
Laminin-binding protein
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:CASQ1
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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>OrganismiOryctolagus cuniculus (Rabbit)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri9986 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000001811 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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: Unplaced

<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

Keywords - Cellular componenti

Endoplasmic reticulum, Membrane, Mitochondrion, Sarcoplasmic reticulum

<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 'PTM / Processing' section denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 281 PublicationAdd BLAST28
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000000421429 – 395Calsequestrin-1Add BLAST367

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 residuei37PhosphotyrosineBy similarity1
Modified residuei75PhosphoserineBy similarity1
Modified residuei118PhosphothreonineBy similarity1
Modified residuei210PhosphoserineBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi344N-linked (GlcNAc...) asparagine1 Publication1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

N-glycosylated.1 Publication

Keywords - PTMi

Glycoprotein, Phosphoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
P07221

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P07221

<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

Detected in skeletal muscle (at protein level). Detected in skeletal muscle.3 Publications

<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%5Fsection">'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%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Monomer; increases in response to a depletion of intracellular calcium. Homodimer. Homotetramer and homopolymer. Can form linear homooligomers. Ca2+ ions promote oligomerization.

Interacts (via C-terminal end and preferentially with the monomeric form) with STIM1; this interaction increases in response to a depletion of intracellular calcium, decreases both STIM1 aggregation and clustering, interaction of STIM1 with ORAI1 and store-operated Ca2+ entry (SOCE) activity (By similarity).

Interacts with ASPH and TRDN (PubMed:15731387, PubMed:19230141, PubMed:19398037).

By similarity7 Publications

GO - Molecular functioni

Protein-protein interaction databases

Molecular INTeraction database

More...
MINTi
P07221

STRING: functional protein association networks

More...
STRINGi
9986.ENSOCUP00000024484

<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

1395
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

More...
SMRi
P07221

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P07221

<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

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>Regioni376 – 395DisorderedSequence analysisAdd BLAST20

<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 calsequestrin family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG502QQUJ, Eukaryota

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P07221

Database of Orthologous Groups

More...
OrthoDBi
1091027at2759

Family and domain databases

Conserved Domains Database

More...
CDDi
cd03074, PDI_b'_Calsequestrin_C, 1 hit
cd03066, PDI_b_Calsequestrin_middle, 1 hit
cd03065, PDI_b_Calsequestrin_N, 1 hit

Database of protein disorder

More...
DisProti
DP00132

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.30.10, 3 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR001393, Calsequestrin
IPR041860, Calsequestrin_C
IPR018233, Calsequestrin_CS
IPR041858, Calsequestrin_middle_dom
IPR041859, Calsequestrin_N
IPR036249, Thioredoxin-like_sf

The PANTHER Classification System

More...
PANTHERi
PTHR10033, PTHR10033, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01216, Calsequestrin, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF52833, SSF52833, 3 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00863, CALSEQUESTRIN_1, 1 hit
PS00864, CALSEQUESTRIN_2, 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%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

P07221-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNAADRMGAR VALLLLLVLG SPQSGVHGEE GLDFPEYDGV DRVINVNAKN
60 70 80 90 100
YKNVFKKYEV LALLYHEPPE DDKASQRQFE MEELILELAA QVLEDKGVGF
110 120 130 140 150
GLVDSEKDAA VAKKLGLTEE DSIYVFKEDE VIEYDGEFSA DTLVEFLLDV
160 170 180 190 200
LEDPVELIEG ERELQAFENI EDEIKLIGYF KNKDSEHYKA FKEAAEEFHP
210 220 230 240 250
YIPFFATFDS KVAKKLTLKL NEIDFYEAFM EEPVTIPDKP NSEEEIVNFV
260 270 280 290 300
EEHRRSTLRK LKPESMYETW EDDMDGIHIV AFAEEADPDG YEFLEILKSV
310 320 330 340 350
AQDNTDNPDL SIIWIDPDDF PLLVPYWEKT FDIDLSAPQI GVVNVTDADS
360 370 380 390
VWMEMDDEED LPSAEELEDW LEDVLEGEIN TEDDDDEDDD DDDDD
Length:395
Mass (Da):45,263
Last modified:April 1, 1988 - v1
<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:iE849B05AF107AFA7
GO

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 conflicti387 – 388ED → DE AA sequence (PubMed:3427087).Curated2

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
M15747 mRNA Translation: AAA31184.1
M22717 M22716 Genomic DNA Translation: AAA31185.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A28142, A25887

NCBI Reference Sequences

More...
RefSeqi
NP_001075737.1, NM_001082268.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
100009095

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ocu:100009095

<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

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M15747 mRNA Translation: AAA31184.1
M22717 M22716 Genomic DNA Translation: AAA31185.1
PIRiA28142, A25887
RefSeqiNP_001075737.1, NM_001082268.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1A8YX-ray2.40A29-395[»]
3TRPX-ray1.88A29-381[»]
3TRQX-ray1.76A29-381[»]
3US3X-ray1.74A29-395[»]
3V1WX-ray1.91A29-395[»]
SMRiP07221
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

MINTiP07221
STRINGi9986.ENSOCUP00000024484

PTM databases

iPTMnetiP07221

Proteomic databases

PRIDEiP07221

Genome annotation databases

GeneIDi100009095
KEGGiocu:100009095

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
844

Phylogenomic databases

eggNOGiENOG502QQUJ, Eukaryota
InParanoidiP07221
OrthoDBi1091027at2759

Miscellaneous databases

EvolutionaryTraceiP07221

Family and domain databases

CDDicd03074, PDI_b'_Calsequestrin_C, 1 hit
cd03066, PDI_b_Calsequestrin_middle, 1 hit
cd03065, PDI_b_Calsequestrin_N, 1 hit
DisProtiDP00132
Gene3Di3.40.30.10, 3 hits
InterProiView protein in InterPro
IPR001393, Calsequestrin
IPR041860, Calsequestrin_C
IPR018233, Calsequestrin_CS
IPR041858, Calsequestrin_middle_dom
IPR041859, Calsequestrin_N
IPR036249, Thioredoxin-like_sf
PANTHERiPTHR10033, PTHR10033, 1 hit
PfamiView protein in Pfam
PF01216, Calsequestrin, 1 hit
SUPFAMiSSF52833, SSF52833, 3 hits
PROSITEiView protein in PROSITE
PS00863, CALSEQUESTRIN_1, 1 hit
PS00864, CALSEQUESTRIN_2, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
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 nameiCASQ1_RABIT
<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: P07221
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 1, 1988
Last sequence update: April 1, 1988
Last modified: June 2, 2021
This is version 139 of the entry and version 1 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

<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, Direct protein sequencing, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
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