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Entry version 105 (02 Jun 2021)
Sequence version 1 (01 Mar 2001)
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Protein

S-methyl-5'-thioinosine phosphorylase

Gene

PA3004

Organism
Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
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

Catalyzes the reversible phosphorylation of S-methyl-5'-thioinosine (MTI) to hypoxanthine and 5-methylthioribose-1-phosphate. Involved in the breakdown of S-methyl-5'-thioadenosine (MTA), a major by-product of polyamine biosynthesis. Catabolism of (MTA) occurs via deamination to MTI and phosphorolysis to hypoxanthine. Involved in quorum sensing.

UniRule annotation1 Publication

Miscellaneous

Although this enzyme belongs to the family of MTA phosphorylases based on sequence homology, it has been shown that conserved amino acid substitutions in the substrate binding pocket convert the substrate specificity of this enzyme from 6-aminopurines to 6-oxopurines.UniRule annotation

<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

  1. KM=2.6 µM for S-methyl-5'-thioinosine1 Publication
  2. KM=23 µM for inosine1 Publication
  3. KM=90 µM for adenosine1 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: purine nucleoside salvage

This protein is involved in the pathway purine nucleoside salvage, which is part of Purine metabolism.UniRule annotation
View all proteins of this organism that are known to be involved in the pathway purine nucleoside salvage and in Purine metabolism.

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 sitei10PhosphateUniRule annotation1
<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>Sitei167Important for substrate specificity1
Binding sitei185Substrate; via amide nitrogenUniRule annotation1
Binding sitei186PhosphateUniRule annotation1
Sitei221Important for substrate specificityUniRule annotation1

<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 functionGlycosyltransferase, Transferase
Biological processPurine salvage

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MetaCyc:MONOMER-16355
PAER208964:G1FZ6-3056-MONOMER

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
2.4.2.44, 5087

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

More...
UniPathwayi
UPA00606

<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-methyl-5'-thioinosine phosphorylase (EC:2.4.2.44UniRule annotation)
Alternative name(s):
5'-methylthioinosine phosphorylaseUniRule annotation
Short name:
MTI phosphorylaseUniRule annotation
Short name:
MTIPUniRule annotation
<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
Ordered Locus Names:PA3004
<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>OrganismiPseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
<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 identifieri208964 [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 lineageiBacteriaProteobacteriaGammaproteobacteriaPseudomonadalesPseudomonadaceaePseudomonas
<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
  • UP000002438 <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

Pseudomonas genome database

More...
PseudoCAPi
PA3004

<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

<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

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL3988593

<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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001845511 – 245S-methyl-5'-thioinosine phosphorylaseAdd BLAST245

Proteomic databases

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

More...
PaxDbi
Q9HZK1

PRoteomics IDEntifications database

More...
PRIDEi
Q9HZK1

<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

Homotrimer.

UniRule annotation1 Publication

Chemistry databases

BindingDB database of measured binding affinities

More...
BindingDBi
Q9HZK1

<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

1245
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
Q9HZK1

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
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>Regioni52 – 53Phosphate bindingUniRule annotation2
Regioni209 – 211Substrate binding3

<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 PNP/MTAP phosphorylase family. MTAP subfamily.UniRule annotation

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_054456_0_2_6

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q9HZK1

Identification of Orthologs from Complete Genome Data

More...
OMAi
DYDVWAE

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q9HZK1

Family and domain databases

Conserved Domains Database

More...
CDDi
cd09010, MTAP_SsMTAPII_like_MTIP, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.50.1580, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_01963, MTAP, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR010044, MTAP
IPR000845, Nucleoside_phosphorylase_d
IPR035994, Nucleoside_phosphorylase_sf
IPR018099, Purine_phosphorylase-2_CS

The PANTHER Classification System

More...
PANTHERi
PTHR42679, PTHR42679, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01048, PNP_UDP_1, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF53167, SSF53167, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR01694, MTAP, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS01240, PNP_MTAP_2, 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.

Q9HZK1-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSVYAIIGGT GLTQLEGLTL SESLPIETPY GAPSAPLQRG RYAGREVLFL
60 70 80 90 100
ARHGHPHRFP PHQVNYRANL WALKQAGAEA VIAVNAVGGI HAAMGTGHLC
110 120 130 140 150
VPHQLIDYTS GREHTYFAGD IEHVTHIDFS HPYDEPLRQR LIEALRALGL
160 170 180 190 200
AHSSHGVYAC TQGPRLETVA EIARLERDGN DIVGMTGMPE AALARELDLP
210 220 230 240
YACLALVVNP AAGKSAGIIT MAEIEQALHD GIGKVREVLA RVLAG
Length:245
Mass (Da):26,266
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:i3C8442062D0666E6
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
AE004091 Genomic DNA Translation: AAG06392.1

Protein sequence database of the Protein Information Resource

More...
PIRi
F83270

NCBI Reference Sequences

More...
RefSeqi
NP_251694.1, NC_002516.2
WP_003091193.1, NZ_QZGE01000009.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAG06392; AAG06392; PA3004

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
880215

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
pae:PA3004

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|208964.12.peg.3152

<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
AE004091 Genomic DNA Translation: AAG06392.1
PIRiF83270
RefSeqiNP_251694.1, NC_002516.2
WP_003091193.1, NZ_QZGE01000009.1

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
3OZBX-ray2.80A/B/C/D/E/F1-245[»]
SMRiQ9HZK1
ModBaseiSearch...
PDBe-KBiSearch...

Chemistry databases

BindingDBiQ9HZK1
ChEMBLiCHEMBL3988593

Proteomic databases

PaxDbiQ9HZK1
PRIDEiQ9HZK1

Genome annotation databases

EnsemblBacteriaiAAG06392; AAG06392; PA3004
GeneIDi880215
KEGGipae:PA3004
PATRICifig|208964.12.peg.3152

Organism-specific databases

PseudoCAPiPA3004

Phylogenomic databases

HOGENOMiCLU_054456_0_2_6
InParanoidiQ9HZK1
OMAiDYDVWAE
PhylomeDBiQ9HZK1

Enzyme and pathway databases

UniPathwayiUPA00606
BioCyciMetaCyc:MONOMER-16355
PAER208964:G1FZ6-3056-MONOMER
BRENDAi2.4.2.44, 5087

Family and domain databases

CDDicd09010, MTAP_SsMTAPII_like_MTIP, 1 hit
Gene3Di3.40.50.1580, 1 hit
HAMAPiMF_01963, MTAP, 1 hit
InterProiView protein in InterPro
IPR010044, MTAP
IPR000845, Nucleoside_phosphorylase_d
IPR035994, Nucleoside_phosphorylase_sf
IPR018099, Purine_phosphorylase-2_CS
PANTHERiPTHR42679, PTHR42679, 1 hit
PfamiView protein in Pfam
PF01048, PNP_UDP_1, 1 hit
SUPFAMiSSF53167, SSF53167, 1 hit
TIGRFAMsiTIGR01694, MTAP, 1 hit
PROSITEiView protein in PROSITE
PS01240, PNP_MTAP_2, 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 nameiMTIP_PSEAE
<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: Q9HZK1
<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: July 19, 2004
Last sequence update: March 1, 2001
Last modified: June 2, 2021
This is version 105 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. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
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