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Entry version 102 (13 Nov 2019)
Sequence version 1 (05 Jul 2004)
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Protein

S-sulfocysteine synthase

Gene

cysK2

Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
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

Catalyzes the synthesis of S-sulfocysteine, utilizing O-phosphoserine (OPS) and thiosulfate as substrates. To a lesser extent, can also use sulfide as donor substrate, producing L-cysteine. CysK2 thus provides a third metabolic route to cysteine, either directly using sulfide as donor or indirectly via S-sulfocysteine. S-sulfocysteine might also act as a signaling molecule triggering additional responses in redox defense in the pathogen upon exposure to reactive oxygen species during intracellular survival or dormancy. Cannot utilize thiocarboxylated CysO as a sulfur donor and O-acetylserine (OAS) as acceptor substrate.1 Publication

Miscellaneous

Was identified as a high-confidence drug target.1 Publication
The enzyme uses a mechanism via a central aminoacrylate intermediate that is similar to that of other members of this pyridoxal phosphate-dependent enzyme family.1 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

<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

pyridoxal 5'-phosphate1 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

kcat is 12.1 min(-1) with O-phospho-L-serine and sulfide as substrates. kcat is 54.8 min(-1) with O-phospho-L-serine and thiosulfate as substrates.1 Publication
  1. KM=135 µM for O-phospho-L-serine (in the presence of sulfide as cosubstrate)1 Publication
  2. KM=374 µM for sulfide1 Publication
  3. KM=1085 µM for O-phospho-L-serine (in the presence of thiosulfate as cosubstrate)1 Publication
  4. KM=43.9 µM for thiosulfate1 Publication

    <p>This subsection of the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: L-cysteine biosynthesis

    This protein is involved in the pathway L-cysteine biosynthesis, which is part of Amino-acid biosynthesis.1 Publication
    View all proteins of this organism that are known to be involved in the pathway L-cysteine biosynthesis and in Amino-acid biosynthesis.

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei288Pyridoxal phosphateBy 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 functionTransferase
    Biological processAmino-acid biosynthesis, Cysteine biosynthesis
    LigandPyridoxal phosphate

    Enzyme and pathway databases

    BioCyc Collection of Pathway/Genome Databases

    More...
    BioCyci
    MetaCyc:G185E-5002-MONOMER
    MTBH37RV:G185E-5002-MONOMER

    Reactome - a knowledgebase of biological pathways and processes

    More...
    Reactomei
    R-MTU-936721 Cysteine synthesis from O-acetylserine

    UniPathway: a resource for the exploration and annotation of metabolic pathways

    More...
    UniPathwayi
    UPA00136

    <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:
    S-sulfocysteine synthase1 Publication (EC:2.5.1.-1 Publication)
    Alternative name(s):
    O-phospho-L-serine-dependent S-sulfocysteine synthase1 Publication
    Short name:
    OPS-dependent S-sulfocysteine synthase1 Publication
    O-phosphoserine sulfhydrylase1 Publication (EC:2.5.1.651 Publication)
    <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:cysK21 Publication
    Ordered Locus Names:Rv0848
    <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>OrganismiMycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
    <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 identifieri83332 [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 lineageiBacteriaActinobacteriaCorynebacterialesMycobacteriaceaeMycobacteriumMycobacterium tuberculosis complex
    <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
    • UP000001584 <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

    Organism-specific databases

    Mycobacterium tuberculosis strain H37Rv genome database

    More...
    TubercuListi
    Rv0848

    <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

    GO - Cellular componenti

    <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

    Mutagenesis

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi243R → A: 10-fold decrease in the specificity constant for thiosulfate compared to wild-type enzyme but little change in the specificity constant for the substrate OPS. 1 Publication1

    <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 describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00004012011 – 372S-sulfocysteine synthaseAdd BLAST372

    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 residuei65N6-(pyridoxal phosphate)lysineBy similarity1 Publication1

    Proteomic databases

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

    More...
    PaxDbi
    Q79FV4

    PRoteomics IDEntifications database

    More...
    PRIDEi
    Q79FV4

    <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

    Homodimer.

    1 Publication

    GO - Molecular functioni

    Protein-protein interaction databases

    STRING: functional protein association networks

    More...
    STRINGi
    83332.Rv0848

    <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
    Q79FV4

    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

    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>Regioni201 – 205Pyridoxal phosphate bindingBy similarity5

    <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

    Phylogenomic databases

    evolutionary genealogy of genes: Non-supervised Orthologous Groups

    More...
    eggNOGi
    ENOG410880H Bacteria
    COG0031 LUCA

    The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

    More...
    HOGENOMi
    HOG000217394

    KEGG Orthology (KO)

    More...
    KOi
    K22847

    Identification of Orthologs from Complete Genome Data

    More...
    OMAi
    GSWCPDQ

    Database for complete collections of gene phylogenies

    More...
    PhylomeDBi
    Q79FV4

    Family and domain databases

    Gene3D Structural and Functional Annotation of Protein Families

    More...
    Gene3Di
    3.40.50.1100, 2 hits

    Integrated resource of protein families, domains and functional sites

    More...
    InterProi
    View protein in InterPro
    IPR001926 PLP-dep
    IPR036052 Trypto_synt_PLP_dependent

    Pfam protein domain database

    More...
    Pfami
    View protein in Pfam
    PF00291 PALP, 1 hit

    Superfamily database of structural and functional annotation

    More...
    SUPFAMi
    SSF53686 SSF53686, 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.

    Q79FV4-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MRSRQTRDRY RLLPEGYQVT PGRNRHPGTM VGNTPVLWIP ELSGTSDPDR
    60 70 80 90 100
    GFWAKLEGFN PGGMKDRPAL YMVECARARG DIAPGAAIVE STGGTLGLGL
    110 120 130 140 150
    ALAGKVYRHP VTLVTDPGLE PIIARMLTAY GAGVDMVTQP HPVGGWQQAR
    160 170 180 190 200
    KDRVAQLMAE YPGAWNPNQY GNPDNVGAYR SLALELVAQL GRIDVLVCSV
    210 220 230 240 250
    GTGGHSAGVA RVLREFNPDM RLIGVDTIGS TIFGQPASNR LMRGLGSSIY
    260 270 280 290 300
    PRNVDYRAFD EVHWVAPPEA VWACRSLAAT HYASGGWSVG AVALVAGWAA
    310 320 330 340 350
    RNLPADTTIA AVFPDGPQRY FDTIYNDAYC NEHELLGGQP PTEPDEIASP
    360 370
    LDAVVTRWTR STTVIDPTQV VS
    Length:372
    Mass (Da):40,118
    Last modified:July 5, 2004 - 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:i927386BE1DF5FB6C
    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
    AL123456 Genomic DNA Translation: CCP43596.1

    Protein sequence database of the Protein Information Resource

    More...
    PIRi
    H70813

    NCBI Reference Sequences

    More...
    RefSeqi
    WP_009935595.1, NZ_NVQJ01000040.1
    YP_177762.1, NC_000962.3

    Genome annotation databases

    Ensembl bacterial and archaeal genome annotation project

    More...
    EnsemblBacteriai
    CCP43596; CCP43596; Rv0848

    Database of genes from NCBI RefSeq genomes

    More...
    GeneIDi
    885545

    KEGG: Kyoto Encyclopedia of Genes and Genomes

    More...
    KEGGi
    mtu:Rv0848
    mtv:RVBD_0848

    Pathosystems Resource Integration Center (PATRIC)

    More...
    PATRICi
    fig|83332.111.peg.940

    <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
    AL123456 Genomic DNA Translation: CCP43596.1
    PIRiH70813
    RefSeqiWP_009935595.1, NZ_NVQJ01000040.1
    YP_177762.1, NC_000962.3

    3D structure databases

    SMRiQ79FV4
    ModBaseiSearch...

    Protein-protein interaction databases

    STRINGi83332.Rv0848

    Proteomic databases

    PaxDbiQ79FV4
    PRIDEiQ79FV4

    Genome annotation databases

    EnsemblBacteriaiCCP43596; CCP43596; Rv0848
    GeneIDi885545
    KEGGimtu:Rv0848
    mtv:RVBD_0848
    PATRICifig|83332.111.peg.940

    Organism-specific databases

    TubercuListiRv0848

    Phylogenomic databases

    eggNOGiENOG410880H Bacteria
    COG0031 LUCA
    HOGENOMiHOG000217394
    KOiK22847
    OMAiGSWCPDQ
    PhylomeDBiQ79FV4

    Enzyme and pathway databases

    UniPathwayiUPA00136
    BioCyciMetaCyc:G185E-5002-MONOMER
    MTBH37RV:G185E-5002-MONOMER
    ReactomeiR-MTU-936721 Cysteine synthesis from O-acetylserine

    Family and domain databases

    Gene3Di3.40.50.1100, 2 hits
    InterProiView protein in InterPro
    IPR001926 PLP-dep
    IPR036052 Trypto_synt_PLP_dependent
    PfamiView protein in Pfam
    PF00291 PALP, 1 hit
    SUPFAMiSSF53686 SSF53686, 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 nameiCYSK2_MYCTU
    <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: Q79FV4
    Secondary accession number(s): L0T531
    <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 30, 2010
    Last sequence update: July 5, 2004
    Last modified: November 13, 2019
    This is version 102 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 programProkaryotic 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. Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh
      Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh: entries and gene names
    3. PATHWAY comments
      Index of metabolic and biosynthesis pathways
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