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Entry version 75 (11 Dec 2019)
Sequence version 1 (01 Nov 1996)
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Protein

Cathepsin L-like proteinase

Gene

Cat-1

Organism
Fasciola hepatica (Liver fluke)
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

Thiol protease. Probably involved in interaction with host tissues. Displays a similar activity to that of papain. Has high activity on Z-Phe-Arg-NHMec, but no activity on Z-Arg-NHMec.1 Publication1 Publication

Caution

It is not clear whether the mature peptide starts at Ala-107 or at Val-108.Curated

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> 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

Strongly inhibited by Antipain, E64 and Leupeptin, and weakly inhibited by iodoacetic acid (IAA) and phenylmethylsulfonyl fluoride (PMSF). Requires the presence of dithiothreitol (DTT) for activity.1 Publication

<p>This subsection of the ‘Function’ section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

  1. KM=46 µM for Z-Phe-Arg-NHMec (at pH 7.45)1 Publication

    pH dependencei

    Optimum pH is 7-9 in a mixed-buffer system. In a Tris buffer high levels of activity were detected at very alkaline pHs.1 Publication

    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 sitei132By similarity1
    Active sitei269By similarity1
    Active sitei289By 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

    BRENDA Comprehensive Enzyme Information System

    More...
    BRENDAi
    3.4.22.B49 2230
    3.4.22.B60 2230

    Protein family/group databases

    MEROPS protease database

    More...
    MEROPSi
    C01.033

    <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 L-like proteinase (EC:3.4.22.-)
    <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:Cat-11 Publication
    <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>OrganismiFasciola hepatica (Liver fluke)
    <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 identifieri6192 [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 lineageiEukaryotaMetazoaPlatyhelminthesTrematodaDigeneaPlagiorchiidaEchinostomataEchinostomatoideaFasciolidaeFasciola

    <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

    Secreted

    <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 – 15Sequence analysisAdd BLAST15
    <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_000004285816 – 106Activation peptideSequence analysis1 PublicationAdd BLAST91
    <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_0000042859107 – 326Cathepsin L-like proteinase1 PublicationAdd BLAST220

    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 residuei1093-hydroxyproline; partial1 Publication1
    <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 bondi129 ↔ 172By similarity
    Disulfide bondi163 ↔ 204By similarity
    Modified residuei1963-hydroxyproline; partial1 Publication1
    Disulfide bondi262 ↔ 311By similarity

    <p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">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

    Contains cysteine residues involved in intramolecular disulfide bonding.1 Publication

    Keywords - PTMi

    Disulfide bond, Hydroxylation, Zymogen

    <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

    Monomer.

    1 Publication

    <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

    1326
    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
    Q24940

    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
    Q24940

    <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

    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>Sequencei

    <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.

    Q24940-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MRLFILAVLT VGVLGSNDDL WHQWKRMYNK EYNGADDQHR RNIWEKNVKH
    60 70 80 90 100
    IQEHNLRHDL GLVTYTLGLN QFTDMTFEEF KAKYLTEMSR ASDILSHGVP
    110 120 130 140 150
    YEANNRAVPD KIDWRESGYV TEVKDQGNCG SCWAFSTTGT MEGQYMKNER
    160 170 180 190 200
    TSISFSEQQL VDCSGPWGNN GCSGGLMENA YQYLKQFGLE TESSYPYTAV
    210 220 230 240 250
    EGQCRYNKQL GVAKVTGYYT VHSGSEVELK NLVGARRPAA VAVDVESDFM
    260 270 280 290 300
    MYRSGIYQSQ TCSPLRVNHA VLAVGYGTQG GTDYWIVKNS WGTYWGERGY
    310 320
    IRMARNRGNM CGIASLASLP MVARFP
    Length:326
    Mass (Da):36,896
    Last modified:November 1, 1996 - 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:i7FDDB3094D3134A6
    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
    L33771 mRNA Translation: AAA29136.1

    Protein sequence database of the Protein Information Resource

    More...
    PIRi
    S43991

    <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
    L33771 mRNA Translation: AAA29136.1
    PIRiS43991

    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
    2O6XX-ray1.40A17-326[»]
    SMRiQ24940
    ModBaseiSearch...
    PDBe-KBiSearch...

    Protein family/group databases

    MEROPSiC01.033

    Enzyme and pathway databases

    BRENDAi3.4.22.B49 2230
    3.4.22.B60 2230

    Miscellaneous databases

    EvolutionaryTraceiQ24940

    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 nameiCATLL_FASHE
    <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: Q24940
    Secondary accession number(s): P91727
    <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 22, 2005
    Last sequence update: November 1, 1996
    Last modified: December 11, 2019
    This is version 75 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)

    <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

    Documents

    1. PDB cross-references
      Index of Protein Data Bank (PDB) cross-references
    2. SIMILARITY comments
      Index of protein domains and families
    3. Peptidase families
      Classification of peptidase families and list of entries
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