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Entry version 85 (11 Dec 2019)
Sequence version 1 (01 Mar 2001)
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Protein

Spermidine N(1)-acetyltransferase

Gene

paiA

Organism
Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165)
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 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

Involved in the protection against polyamine toxicity by regulating their concentration. Also could be involved in the negative control of sporulation as well as production of degradative enzymes such as alpha-amylase, levansucrase and alkaline phosphatase. Catalyzes the transfer of an acetyl group from acetyl coenzyme A (AcCoA) to an acceptor substrate and release both CoA and the acetylated product. It can use a variety of substrates including spermidine, L-tryptophan, L-leucine, L-lysine, dopamine and tyramine.2 Publications

<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 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 42 min(-1) for acetyltransferase activity with acetylspermidine as substrate (at pH 8.3). Kcat is 31 min(-1) for acetyltransferase activity with AcCoA as substrate (at pH 8.3).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 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 sitei131Acetyl-CoA1 Publication1
      Binding sitei136Acetyl-CoA1 Publication1
      Binding sitei140Acetyl-CoA1 Publication1
      <p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei142May have an important role in the acetylation of the polyamineBy 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

      • diamine N-acetyltransferase activity Source: UniProtKB

      GO - Biological processi

      • negative regulation of sporulation Source: UniProtKB

      <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 functionAcyltransferase, Transferase

      Enzyme and pathway databases

      BioCyc Collection of Pathway/Genome Databases

      More...
      BioCyci
      TACI273075:G1GT7-398-MONOMER

      <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:
      Spermidine N(1)-acetyltransferase1 Publication (EC:2.3.1.571 Publication)
      Short name:
      SAT1 Publication
      Alternative name(s):
      GCN5-related N-acetyltransferaseCurated
      Short name:
      GNATCurated
      Protease synthase and sporulation negative regulatory protein PAI 11 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:paiA1 Publication
      Ordered Locus Names:Ta0374
      <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>OrganismiThermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165)
      <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 identifieri273075 [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 lineageiArchaeaEuryarchaeotaDiaforarchaea groupThermoplasmataThermoplasmatalesThermoplasmataceaeThermoplasma
      <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
      • UP000001024 <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 ‘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_00004333971 – 161Spermidine N(1)-acetyltransferaseAdd BLAST161

      <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 or homodimer.

      1 Publication

      Protein-protein interaction databases

      STRING: functional protein association networks

      More...
      STRINGi
      273075.Ta0374

      <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

      1161
      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
      Q9HL57

      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
      Q9HL57

      <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

      Domains and Repeats

      Feature keyPosition(s)DescriptionActionsGraphical viewLength
      <p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini3 – 160N-acetyltransferasePROSITE-ProRule annotationAdd BLAST158

      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>Regioni92 – 94Acetyl-CoA-binding1 Publication3
      Regioni99 – 104Acetyl-CoA binding1 Publication6

      Phylogenomic databases

      evolutionary genealogy of genes: Non-supervised Orthologous Groups

      More...
      eggNOGi
      arCOG00844 Archaea
      COG0454 LUCA

      The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

      More...
      HOGENOMi
      HOG000142612

      KEGG Orthology (KO)

      More...
      KOi
      K22441

      Identification of Orthologs from Complete Genome Data

      More...
      OMAi
      HAGIRFY

      Database of Orthologous Groups

      More...
      OrthoDBi
      83657at2157

      Family and domain databases

      Integrated resource of protein families, domains and functional sites

      More...
      InterProi
      View protein in InterPro
      IPR016181 Acyl_CoA_acyltransferase
      IPR000182 GNAT_dom

      Pfam protein domain database

      More...
      Pfami
      View protein in Pfam
      PF00583 Acetyltransf_1, 1 hit

      Superfamily database of structural and functional annotation

      More...
      SUPFAMi
      SSF55729 SSF55729, 1 hit

      PROSITE; a protein domain and family database

      More...
      PROSITEi
      View protein in PROSITE
      PS51186 GNAT, 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.

      Q9HL57-1 [UniParc]FASTAAdd to basket
      « Hide
              10         20         30         40         50
      MSIEIRKLSI EDLETLIEVA RESWKWTYAG IYSEEYIESW IREKYSKEKL
      60 70 80 90 100
      LNEIVRSQSN LDILFLGAFA DSTLIGFIEL KIIANKAELL RLYLKPEYTH
      110 120 130 140 150
      KKIGKTLLLE AEKIMKKKGI LECRLYVHRQ NSVGFSFYYK NGFKVEDTDG
      160
      SDFIMEKKYE S
      Length:161
      Mass (Da):18,997
      Last modified:March 1, 2001 - 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:i934050066A9DBA05
      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
      AL445064 Genomic DNA Translation: CAC11518.1

      NCBI Reference Sequences

      More...
      RefSeqi
      WP_010900802.1, NC_002578.1

      Genome annotation databases

      Ensembl bacterial and archaeal genome annotation project

      More...
      EnsemblBacteriai
      CAC11518; CAC11518; CAC11518

      Database of genes from NCBI RefSeq genomes

      More...
      GeneIDi
      41587478

      KEGG: Kyoto Encyclopedia of Genes and Genomes

      More...
      KEGGi
      tac:Ta0374

      <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
      AL445064 Genomic DNA Translation: CAC11518.1
      RefSeqiWP_010900802.1, NC_002578.1

      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
      3F0AX-ray2.50A1-159[»]
      3FIXX-ray2.30A/B/C/D1-159[»]
      3K9UX-ray2.30A/B1-159[»]
      3NE7X-ray2.30A1-159[»]
      SMRiQ9HL57
      ModBaseiSearch...
      PDBe-KBiSearch...

      Protein-protein interaction databases

      STRINGi273075.Ta0374

      Genome annotation databases

      EnsemblBacteriaiCAC11518; CAC11518; CAC11518
      GeneIDi41587478
      KEGGitac:Ta0374

      Phylogenomic databases

      eggNOGiarCOG00844 Archaea
      COG0454 LUCA
      HOGENOMiHOG000142612
      KOiK22441
      OMAiHAGIRFY
      OrthoDBi83657at2157

      Enzyme and pathway databases

      BioCyciTACI273075:G1GT7-398-MONOMER

      Miscellaneous databases

      EvolutionaryTraceiQ9HL57

      Family and domain databases

      InterProiView protein in InterPro
      IPR016181 Acyl_CoA_acyltransferase
      IPR000182 GNAT_dom
      PfamiView protein in Pfam
      PF00583 Acetyltransf_1, 1 hit
      SUPFAMiSSF55729 SSF55729, 1 hit
      PROSITEiView protein in PROSITE
      PS51186 GNAT, 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 nameiPAIA_THEAC
      <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: Q9HL57
      <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: June 24, 2015
      Last sequence update: March 1, 2001
      Last modified: December 11, 2019
      This is version 85 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

      3D-structure, Reference proteome

      Documents

      1. PDB cross-references
        Index of Protein Data Bank (PDB) cross-references
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