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Entry version 100 (02 Jun 2021)
Sequence version 1 (25 Oct 2005)
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Protein

Lysosomal protective protein

Gene

CTSA

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score:

Annotation score:3 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

Protective protein appears to be essential for both the activity of beta-galactosidase and neuraminidase, it associates with these enzymes and exerts a protective function necessary for their stability and activity. This protein is also a carboxypeptidase and can deamidate tachykinins (By similarity).

By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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

  • Release of a C-terminal amino acid with broad specificity.PROSITE-ProRule annotation EC:3.4.16.5

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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 sitei177By similarity1
Active sitei399By similarity1
Active sitei456By 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

<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 functionCarboxypeptidase, Hydrolase, Protease

Protein family/group databases

ESTHER database of the Alpha/Beta-hydrolase fold superfamily of proteins

More...
ESTHERi
bovin-ppgb, Carboxypeptidase_S10

MEROPS protease database

More...
MEROPSi
S10.002

<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%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:
Lysosomal protective protein (EC:3.4.16.5)
Alternative name(s):
Cathepsin A
Cleaved into the following 2 chains:
<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:CTSA
Synonyms:PPGB
<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>OrganismiBos taurus (Bovine)
<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 identifieri9913 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaArtiodactylaRuminantiaPecoraBovidaeBovinaeBos
<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
  • UP000009136 <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

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 – 27By similarityAdd BLAST27
<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_000023621928 – 479Lysosomal protective proteinAdd BLAST452
ChainiPRO_000023622028 – 325Lysosomal protective protein 32 kDa chainBy similarityAdd BLAST298
ChainiPRO_0000236221326 – 479Lysosomal protective protein 20 kDa chainBy similarityAdd BLAST154

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 bondi87 ↔ 361By similarity
<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>Glycosylationi144N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi239 ↔ 255By similarity
Disulfide bondi240 ↔ 245By similarity
Disulfide bondi280 ↔ 330By similarity
Glycosylationi332N-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
Q3MI05

PRoteomics IDEntifications database

More...
PRIDEi
Q3MI05

<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
ENSBTAG00000027337, Expressed in adrenal gland and 96 other tissues

<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

Heterodimer of a 32 kDa chain and a 20 kDa chain; disulfide-linked.

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9913.ENSBTAP00000039003

<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
Q3MI05

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 S10 family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1282, Eukaryota

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_008523_13_3_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q3MI05

Identification of Orthologs from Complete Genome Data

More...
OMAi
GGHMVPY

Database of Orthologous Groups

More...
OrthoDBi
607679at2759

TreeFam database of animal gene trees

More...
TreeFami
TF323769

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.50.1820, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR029058, AB_hydrolase
IPR001563, Peptidase_S10
IPR033124, Ser_caboxypep_his_AS
IPR018202, Ser_caboxypep_ser_AS

The PANTHER Classification System

More...
PANTHERi
PTHR11802, PTHR11802, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00450, Peptidase_S10, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00724, CRBOXYPTASEC

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF53474, SSF53474, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00560, CARBOXYPEPT_SER_HIS, 1 hit
PS00131, CARBOXYPEPT_SER_SER, 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.

Q3MI05-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MFRAALWPPV LLLLQLLLLA CAPGGEGAHD QDEIRFLPGL AKQPSFRQYS
60 70 80 90 100
GYLKGSGSKR LHYWFVESQK DPKSSPVVLW LNGGPGCSSL DGLLTEHGPF
110 120 130 140 150
LIQPDGVTLE YNPYSWNLIA NVLYLESPAG VGFSYSDDKS YATNDTEVAQ
160 170 180 190 200
SNFEALKDFF CLFPEYKGNE LFLTGESYAG IYIPTLAVLV MQDPSMNLQG
210 220 230 240 250
LAVGNGLSSY EQNDNSLVYF AYYHGLLGNR LWSSLQTHCC SQNQCNFHDN
260 270 280 290 300
KEPECVANLQ EVSHIVASSG LNIYNLYAPC AGGVPSHVRH EKDTVVVQDL
310 320 330 340 350
GNIFTRLPLK RVWHQTLLRS GEKVHLDPPC TNTTAASNYL NDPHVRKALH
360 370 380 390 400
IPEQLPRWDL CNFLVNIQYR RLYQSMCSQY LKLLSAQKYR ILLYNGDVDM
410 420 430 440 450
ACNFMGDEWF VDSLNQKMEV QRRPWLVDYG ESGEQIAGFV KEFSHIAFLT
460 470
IKGAGHMVPT DKPQAALTMF SRFLNRQPY
Length:479
Mass (Da):53,980
Last modified:October 25, 2005 - 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:iA37CC37D5C575FBF
GO

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
BC104495 mRNA Translation: AAI04496.1

NCBI Reference Sequences

More...
RefSeqi
NP_001030403.1, NM_001035326.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
518169

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bta:518169

<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
BC104495 mRNA Translation: AAI04496.1
RefSeqiNP_001030403.1, NM_001035326.1

3D structure databases

SMRiQ3MI05
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9913.ENSBTAP00000039003

Protein family/group databases

ESTHERibovin-ppgb, Carboxypeptidase_S10
MEROPSiS10.002

Proteomic databases

PaxDbiQ3MI05
PRIDEiQ3MI05

Genome annotation databases

GeneIDi518169
KEGGibta:518169

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
5476

Phylogenomic databases

eggNOGiKOG1282, Eukaryota
HOGENOMiCLU_008523_13_3_1
InParanoidiQ3MI05
OMAiGGHMVPY
OrthoDBi607679at2759
TreeFamiTF323769

Gene expression databases

BgeeiENSBTAG00000027337, Expressed in adrenal gland and 96 other tissues

Family and domain databases

Gene3Di3.40.50.1820, 1 hit
InterProiView protein in InterPro
IPR029058, AB_hydrolase
IPR001563, Peptidase_S10
IPR033124, Ser_caboxypep_his_AS
IPR018202, Ser_caboxypep_ser_AS
PANTHERiPTHR11802, PTHR11802, 1 hit
PfamiView protein in Pfam
PF00450, Peptidase_S10, 1 hit
PRINTSiPR00724, CRBOXYPTASEC
SUPFAMiSSF53474, SSF53474, 1 hit
PROSITEiView protein in PROSITE
PS00560, CARBOXYPEPT_SER_HIS, 1 hit
PS00131, CARBOXYPEPT_SER_SER, 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 nameiPPGB_BOVIN
<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: Q3MI05
<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: May 30, 2006
Last sequence update: October 25, 2005
Last modified: June 2, 2021
This is version 100 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

Reference proteome

Documents

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