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Entry version 133 (08 May 2019)
Sequence version 1 (01 Nov 1997)
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Protein

Cathepsin L1

Gene

CTSL

Organism
Sus scrofa (Pig)
Status
Reviewed-Annotation score:

Annotation score:4 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 transcript 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

Important for the overall degradation of proteins in lysosomes.

<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

  • Specificity close to that of papain. As compared to cathepsin B, cathepsin L exhibits higher activity toward protein substrates, but has little activity on Z-Arg-Arg-NHMec, and no peptidyl-dipeptidase activity. EC:3.4.22.15

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> 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 sitei138By similarity1
Active sitei277By similarity1
Active sitei301By similarity1

<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

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-SSC-1592389 Activation of Matrix Metalloproteinases
R-SSC-1679131 Trafficking and processing of endosomal TLR
R-SSC-2022090 Assembly of collagen fibrils and other multimeric structures
R-SSC-2132295 MHC class II antigen presentation
R-SSC-8939242 RUNX1 regulates transcription of genes involved in differentiation of keratinocytes

Protein family/group databases

MEROPS protease database

More...
MEROPSi
I29.010

<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:
Cathepsin L1 (EC:3.4.22.15)
Alternative name(s):
Cathepsin L
Cleaved into the following 2 chains:
<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:CTSL
Synonyms:CTSL1
<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>OrganismiSus scrofa (Pig)
<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 identifieri9823 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaSuinaSuidaeSus
<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
  • UP000008227 <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 10

<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

Lysosome

<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 – 17By similarityAdd BLAST17
<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_000002625218 – 117Activation peptideAdd BLAST100
<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_0000026253118 – 289Cathepsin L1 heavy chainAdd BLAST172
PropeptideiPRO_0000026254290 – 291By similarity2
ChainiPRO_0000026255292 – 334Cathepsin L1 light chainAdd BLAST43

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi135 ↔ 178By similarity
Disulfide bondi169 ↔ 212By similarity
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">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>Glycosylationi222N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi270 ↔ 323Interchain (between heavy and light chains)By similarity
Glycosylationi292N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Disulfide bond, Glycoprotein, Zymogen

Proteomic databases

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

More...
PaxDbi
Q28944

PeptideAtlas

More...
PeptideAtlasi
Q28944

PRoteomics IDEntifications database

More...
PRIDEi
Q28944

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSSSCG00000011171 Expressed in 6 organ(s), highest expression level in kidney

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q28944 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q28944 SS

<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

Dimer of a heavy and a light chain linked by disulfide bonds.

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9823.ENSSSCP00000011919

<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

3D structure databases

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

More...
SMRi
Q28944

Database of comparative protein structure models

More...
ModBasei
Search...

<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

<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 C1 family.PROSITE-ProRule annotation

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1543 Eukaryota
COG4870 LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000154367

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000230774

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q28944

KEGG Orthology (KO)

More...
KOi
K01365

Identification of Orthologs from Complete Genome Data

More...
OMAi
GQHYRKS

Database of Orthologous Groups

More...
OrthoDBi
1275401at2759

TreeFam database of animal gene trees

More...
TreeFami
TF313739

Family and domain databases

Conserved Domains Database

More...
CDDi
cd02248 Peptidase_C1A, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR038765 Papain-like_cys_pep_sf
IPR025661 Pept_asp_AS
IPR000169 Pept_cys_AS
IPR025660 Pept_his_AS
IPR000668 Peptidase_C1A_C
IPR039417 Peptidase_C1A_papain-like
IPR013201 Prot_inhib_I29

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF08246 Inhibitor_I29, 1 hit
PF00112 Peptidase_C1, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00705 PAPAIN

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00848 Inhibitor_I29, 1 hit
SM00645 Pept_C1, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF54001 SSF54001, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00640 THIOL_PROTEASE_ASN, 1 hit
PS00139 THIOL_PROTEASE_CYS, 1 hit
PS00639 THIOL_PROTEASE_HIS, 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>. 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>Sequence (1+)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 has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

Q28944-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKPSLFLTAL CLGIASAAPK LDQNLDADWY KWKATHGRLY GMNEEGWRRA
60 70 80 90 100
VWEKNMKMIE LHNQEYSQGK HGFSMAMNAF GDMTNEEFRQ VMNGFQNQKH
110 120 130 140 150
KKGKVFHESL VLEVPKSVDW REKGYVTAVK NQGQCGSCWA FSATGALEGQ
160 170 180 190 200
MFRKTGKLVS LSEQNLVDCS RPQGNQGCNG GLMDNAFQYV KDNGGLDTEE
210 220 230 240 250
SYPYLGRETN SCTYKPECSA ANDTGFVDIP QREKALMKAV ATVGPISVAI
260 270 280 290 300
DAGHSSFQFY KSGIYYDPDC SSKDLDHGVL VVGYGFEGTD SNSSKFWIVK
310 320 330
NSWGPEWGWN GYVKMAKDQN NHCGISTAAS YPTV
Length:334
Mass (Da):37,178
Last modified:November 1, 1997 - 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:i51DBA79ACCF2CE53
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
A0A286ZNU3A0A286ZNU3_PIG
Pept_C1 domain-containing protein
CTSV
279Annotation 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>

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
D37917 mRNA Translation: BAA07140.1
AJ315771 Genomic DNA Translation: CAC44793.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A58195

NCBI Reference Sequences

More...
RefSeqi
NP_999057.1, NM_213892.1
XP_005653866.1, XM_005653809.2
XP_005653867.1, XM_005653810.2

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSSSCT00000012233; ENSSSCP00000011919; ENSSSCG00000011171

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
396926

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ssc:396926

<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
D37917 mRNA Translation: BAA07140.1
AJ315771 Genomic DNA Translation: CAC44793.1
PIRiA58195
RefSeqiNP_999057.1, NM_213892.1
XP_005653866.1, XM_005653809.2
XP_005653867.1, XM_005653810.2

3D structure databases

SMRiQ28944
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9823.ENSSSCP00000011919

Protein family/group databases

MEROPSiI29.010

Proteomic databases

PaxDbiQ28944
PeptideAtlasiQ28944
PRIDEiQ28944

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSSSCT00000012233; ENSSSCP00000011919; ENSSSCG00000011171
GeneIDi396926
KEGGissc:396926

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
1515

Phylogenomic databases

eggNOGiKOG1543 Eukaryota
COG4870 LUCA
GeneTreeiENSGT00940000154367
HOGENOMiHOG000230774
InParanoidiQ28944
KOiK01365
OMAiGQHYRKS
OrthoDBi1275401at2759
TreeFamiTF313739

Enzyme and pathway databases

ReactomeiR-SSC-1592389 Activation of Matrix Metalloproteinases
R-SSC-1679131 Trafficking and processing of endosomal TLR
R-SSC-2022090 Assembly of collagen fibrils and other multimeric structures
R-SSC-2132295 MHC class II antigen presentation
R-SSC-8939242 RUNX1 regulates transcription of genes involved in differentiation of keratinocytes

Gene expression databases

BgeeiENSSSCG00000011171 Expressed in 6 organ(s), highest expression level in kidney
ExpressionAtlasiQ28944 baseline and differential
GenevisibleiQ28944 SS

Family and domain databases

CDDicd02248 Peptidase_C1A, 1 hit
InterProiView protein in InterPro
IPR038765 Papain-like_cys_pep_sf
IPR025661 Pept_asp_AS
IPR000169 Pept_cys_AS
IPR025660 Pept_his_AS
IPR000668 Peptidase_C1A_C
IPR039417 Peptidase_C1A_papain-like
IPR013201 Prot_inhib_I29
PfamiView protein in Pfam
PF08246 Inhibitor_I29, 1 hit
PF00112 Peptidase_C1, 1 hit
PRINTSiPR00705 PAPAIN
SMARTiView protein in SMART
SM00848 Inhibitor_I29, 1 hit
SM00645 Pept_C1, 1 hit
SUPFAMiSSF54001 SSF54001, 1 hit
PROSITEiView protein in PROSITE
PS00640 THIOL_PROTEASE_ASN, 1 hit
PS00139 THIOL_PROTEASE_CYS, 1 hit
PS00639 THIOL_PROTEASE_HIS, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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 nameiCATL1_PIG
<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: Q28944
<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: November 1, 1997
Last sequence update: November 1, 1997
Last modified: May 8, 2019
This is version 133 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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Peptidase families
    Classification of peptidase families and list of entries
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