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UniProtKB - Q9YBL2 (CYSO_AERPE)

Protein

Protein CysO

Gene

cysO

Organism
Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1)
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

Cysteine synthase that can also catalyze the synthesis of S-sulfo-L-cysteine from thiosulfate and O3-acetyl-L-serine, as well as the sulfhydrylation of L-serine by sulfide.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

  1. KM=28 mM for O3-acetyl-L-serine (in the presence of 1 mM sodium sulfide at pH 6.7 and 60 degrees Celsius)1 Publication
  2. KM=0.2 mM for sulfide (in the presence of 20 mM O3-acetyl-L-serine at pH 6.7 and 60 degrees Celsius)1 Publication
  3. KM=8 mM for L-serine (in the presence of 0.7 mM L-homocysteine at pH 8.3 and 85 degrees Celsius)1 Publication
  4. KM=0.5 mM for L-homocysteine (in the presence of 30 mM L-serine at pH 8.3 and 85 degrees Celsius)1 Publication
  5. KM=0.2 mM for sulfide (in the presence of 20 mM L-serine at pH 8.5 and 70 degrees Celsius)1 Publication
  6. KM=31 mM for L-serine (in the presence of 1 mM sodium sulfide at pH 8.5 and 70 degrees Celsius)1 Publication
  7. KM=13 mM for O3-acetyl-L-serine (in the presence of 20 mM thiosulfate at pH 6.1 and 85 degrees Celsius)1 Publication
  8. KM=21 mM for thiosulfate (in the presence of 20 mM O3-acetyl-L-serine at pH 6.1 and 85 degrees Celsius)1 Publication

    pH dependencei

    Optimum pH is 6.7 for O-acetylserine sulfhydrylase A activity and 8.1-8.8 for cystathionine beta-synthase activity.1 Publication

    Temperature dependencei

    Optimum temperature is above 90 degrees Celsius for S-sulfo-L-cysteine synthase activity, 70-80 degrees Celsius for O-acetylserine sulfhydrylase A activity, and 80 degrees Celsius for both cystathionine beta-synthase and L-serine sulfhdrylase activities.1 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 step 2 of the subpathway that synthesizes L-cysteine from L-serine.
    Proteins known to be involved in the 2 steps of the subpathway in this organism are:
    1. no protein annotated in this organism
    2. Protein CysO (cysO)
    This subpathway is part of the pathway L-cysteine biosynthesis, which is itself part of Amino-acid biosynthesis.
    View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-cysteine from L-serine, the pathway L-cysteine biosynthesis and in Amino-acid biosynthesis.

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the ‘Function’ 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 sitei155Pyridoxal phosphate1 Publication1
    Binding sitei341Pyridoxal phosphate1 Publication1

    <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

    View the complete GO annotation on QuickGO ...

    GO - Biological processi

    View the complete GO annotation on QuickGO ...

    <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 functionLyase, Transferase
    Biological processAmino-acid biosynthesis, Cysteine biosynthesis
    LigandPyridoxal phosphate

    Enzyme and pathway databases

    BioCyc Collection of Pathway/Genome Databases

    More...    BioCyci    		MetaCyc:MONOMER-20567

    BRENDA Comprehensive Enzyme Information System

    More...    BRENDAi    		2.5.1.47 171
    2.5.1.65 171

    SABIO-RK: Biochemical Reaction Kinetics Database

    More...    SABIO-RKi    		Q9YBL2

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

    More...    UniPathwayi
    UPA00136;UER00200

    <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:
    Protein CysO
    Alternative name(s):
    Cystathionine beta-synthase (EC:4.2.1.222 Publications)
    Cysteine synthase (EC:2.5.1.471 Publication)
    O-acetylserine sulfhydrylase1 Publication
    O-phosphoserine sulfhydrylase1 Publication (EC:2.5.1.651 Publication)
    Serine sulfhydrase
    <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:cysO
    Ordered Locus Names:APE_1586
    <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>OrganismiAeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1)
    <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 identifieri272557 [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 lineageiArchaea › Crenarchaeota › Thermoprotei › Desulfurococcales › Desulfurococcaceae › Aeropyrum ›
    <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
    • UP000002518 <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

    <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 <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemoved1 Publication
    <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_00001671312 – 389Protein CysOAdd BLAST388

    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 residuei127N6-(pyridoxal phosphate)lysine1

    Proteomic databases

    PRoteomics IDEntifications database

    More...    PRIDEi    		Q9YBL2

    <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.2 Publications

    Protein-protein interaction databases

    STRING: functional protein association networks

    More...    STRINGi    		272557.APE_1586

    <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

    1389
    Legend: HelixTurnBeta strandPDB Structure known for this area
    Show more details

    3D structure databases

    Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

    More...    ProteinModelPortali    		Q9YBL2

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

    More...    SMRi    		Q9YBL2

    Database of comparative protein structure models

    More...    ModBasei    		Search...

    MobiDB: a database of protein disorder and mobility annotations

    More...    MobiDBi    		Search...

    Miscellaneous databases

    Relative evolutionary importance of amino acids within a protein sequence

    More...    EvolutionaryTracei    		Q9YBL2

    <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>Regioni261 – 265Pyridoxal phosphate binding5

    <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 cysteine synthase/cystathionine beta-synthase family.Curated

    Phylogenomic databases

    evolutionary genealogy of genes: Non-supervised Orthologous Groups

    More...    eggNOGi    		arCOG01430 Archaea
    COG0031 LUCA

    The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

    More...    HOGENOMi    		HOG000217394

    KEGG Orthology (KO)

    More...    KOi    		K10150

    Identification of Orthologs from Complete Genome Data

    More...    OMAi    		GIRRWPE

    Database of Orthologous Groups

    More...    OrthoDBi    		POG093Z060J

    Family and domain databases

    Integrated resource of protein families, domains and functional sites

    More...    InterProi    		View protein in InterPro
    IPR001216 P-phosphate_BS
    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

    PROSITE; a protein domain and family database

    More...    PROSITEi    		View protein in PROSITE
    PS00901 CYS_SYNTHASE, 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>.<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.

    Q9YBL2-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MALADISGYL DVLDSVRGFS YLENAREVLR SGEARCLGNP RSEPEYVKAL 
            60         70         80         90        100
    YVIGASRIPV GDGCSHTLEE LGVFDISVPG EMVFPSPLDF FERGKPTPLV 
           110        120        130        140        150
    RSRLQLPNGV RVWLKLEWYN PFSLSVKDRP AVEIISRLSR RVEKGSLVAD 
           160        170        180        190        200
    ATSSNFGVAL SAVARLYGYR ARVYLPGAAE EFGKLLPRLL GAQVIVDPEA 
           210        220        230        240        250
    PSTVHLLPRV MKDSKNEGFV HVNQFYNDAN FEAHMRGTAR EIFVQSRRGG 
           260        270        280        290        300
    LALRGVAGSL GTSGHMSAAA FYLQSVDPSI RAVLVQPAQG DSIPGIRRVE 
           310        320        330        340        350
    TGMLWINMLD ISYTLAEVTL EEAMEAVVEV ARSDGLVIGP SGGAAVKALA 
           360        370        380 
    KKAAEGDLEP GDYVVVVPDT GFKYLSLVQN ALEGAGDSV
    Length:389
    Mass (Da):41,981
    Last modified:January 23, 2007 - v3
    <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:iC103727AC1B9C72B
    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
    		BA000002 Genomic DNA Translation: BAA80586.1

    Protein sequence database of the Protein Information Resource

    More...    PIRi    		E72537

    Genome annotation databases

    Ensembl bacterial and archaeal genome annotation project

    More...    EnsemblBacteriai    		BAA80586; BAA80586; APE_1586

    KEGG: Kyoto Encyclopedia of Genes and Genomes

    More...    KEGGi    		ape:APE_1586

    Pathosystems Resource Integration Center (PATRIC)

    More...    PATRICi    		fig|272557.25.peg.1071

    <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
    		BA000002 Genomic DNA Translation: BAA80586.1
    PIRiE72537

    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
    1WKVX-ray2.00A/B1-389[»]
    3VSAX-ray2.07A/B1-389[»]
    3VSCX-ray2.07A/B1-389[»]
    3VSDX-ray2.09A/B1-389[»]
    5B36X-ray2.15A/B1-389[»]
    5B3AX-ray2.14A/B1-389[»]
    ProteinModelPortaliQ9YBL2
    SMRiQ9YBL2
    ModBaseiSearch...
    MobiDBiSearch...

    Protein-protein interaction databases

    STRINGi272557.APE_1586

    Proteomic databases

    PRIDEiQ9YBL2

    Protocols and materials databases

    Structural Biology KnowledgebaseSearch...

    Genome annotation databases

    EnsemblBacteriaiBAA80586; BAA80586; APE_1586
    KEGGiape:APE_1586
    PATRICifig|272557.25.peg.1071

    Phylogenomic databases

    eggNOGiarCOG01430 Archaea
    COG0031 LUCA
    HOGENOMiHOG000217394
    KOiK10150
    OMAiGIRRWPE
    OrthoDBiPOG093Z060J

    Enzyme and pathway databases

    UniPathwayi
    UPA00136;UER00200

    BioCyciMetaCyc:MONOMER-20567
    BRENDAi2.5.1.47 171
    2.5.1.65 171
    SABIO-RKiQ9YBL2

    Miscellaneous databases

    EvolutionaryTraceiQ9YBL2

    Family and domain databases

    InterProiView protein in InterPro
    IPR001216 P-phosphate_BS
    IPR001926 PLP-dep
    IPR036052 Trypto_synt_PLP_dependent
    PfamiView protein in Pfam
    PF00291 PALP, 1 hit
    SUPFAMiSSF53686 SSF53686, 1 hit
    PROSITEiView protein in PROSITE
    PS00901 CYS_SYNTHASE, 1 hit

    ProtoNet; Automatic hierarchical classification of proteins

    More...    ProtoNeti    		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 nameiCYSO_AERPE
    <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: Q9YBL2
    <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: January 24, 2006
    Last sequence update: January 23, 2007
    Last modified: December 5, 2018
    This is version 107 of the entry and version 3 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

    3D-structure, Complete proteome, 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
    3. PATHWAY comments
      Index of metabolic and biosynthesis pathways
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