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Protein

S-methyl-5'-thioadenosine phosphorylase

Gene

mtnP

Organism
Geobacter sulfurreducens (strain ATCC 51573 / DSM 12127 / PCA)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the reversible phosphorylation of S-methyl-5'-thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate. Involved in the breakdown of MTA, a major by-product of polyamine biosynthesis. Responsible for the first step in the methionine salvage pathway after MTA has been generated from S-adenosylmethionine. Has broad substrate specificity with 6-aminopurine nucleosides as preferred substrates.UniRule annotation

Catalytic activityi

S-methyl-5'-thioadenosine + phosphate = adenine + S-methyl-5-thio-alpha-D-ribose 1-phosphate.UniRule annotation

Pathwayi: L-methionine biosynthesis via salvage pathway

This protein is involved in step 1 of the subpathway that synthesizes S-methyl-5-thio-alpha-D-ribose 1-phosphate from S-methyl-5'-thioadenosine (phosphorylase route).UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. S-methyl-5'-thioadenosine phosphorylase (mtnP)
This subpathway is part of the pathway L-methionine biosynthesis via salvage pathway, 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 S-methyl-5-thio-alpha-D-ribose 1-phosphate from S-methyl-5'-thioadenosine (phosphorylase route), the pathway L-methionine biosynthesis via salvage pathway and in Amino-acid biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei11PhosphateUniRule annotation1
Sitei167Important for substrate specificityUniRule annotation1
Binding sitei185Substrate; via amide nitrogenUniRule annotation1
Binding sitei186PhosphateUniRule annotation1
Sitei222Important for substrate specificityUniRule annotation1

GO - Molecular functioni

  • S-methyl-5-thioadenosine phosphorylase activity Source: TIGR

GO - Biological processi

  • adenine salvage Source: TIGR
  • L-methionine biosynthetic process from methylthioadenosine Source: TIGR
  • purine-containing compound salvage Source: GO_Central
  • purine ribonucleoside salvage Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Keywords - Biological processi

Purine salvage

Enzyme and pathway databases

UniPathwayiUPA00904; UER00873.

Names & Taxonomyi

Protein namesi
Recommended name:
S-methyl-5'-thioadenosine phosphorylaseUniRule annotation (EC:2.4.2.28UniRule annotation)
Alternative name(s):
5'-methylthioadenosine phosphorylaseUniRule annotation
Short name:
MTA phosphorylaseUniRule annotation
Short name:
MTAPUniRule annotation
Gene namesi
Name:mtnPUniRule annotation
Ordered Locus Names:GSU1112
OrganismiGeobacter sulfurreducens (strain ATCC 51573 / DSM 12127 / PCA)
Taxonomic identifieri243231 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaDeltaproteobacteriaDesulfuromonadalesGeobacteraceaeGeobacter
Proteomesi
  • UP000000577 Componenti: Chromosome

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00004150921 – 286S-methyl-5'-thioadenosine phosphorylaseAdd BLAST286

Interactioni

Subunit structurei

Homohexamer. Dimer of a homotrimer.UniRule annotation

Protein-protein interaction databases

STRINGi243231.GSU1112.

Structurei

3D structure databases

ProteinModelPortaliQ74E52.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni53 – 54Phosphate bindingUniRule annotation2
Regioni86 – 87Phosphate bindingUniRule annotation2
Regioni209 – 211Substrate bindingUniRule annotation3

Sequence similaritiesi

Belongs to the PNP/MTAP phosphorylase family. MTAP subfamily.UniRule annotation

Phylogenomic databases

eggNOGiENOG4107RHB. Bacteria.
COG0005. LUCA.
HOGENOMiHOG000228986.
InParanoidiQ74E52.
KOiK00772.
OMAiCVAHVSM.
OrthoDBiPOG091H0228.

Family and domain databases

Gene3Di3.40.50.1580. 1 hit.
HAMAPiMF_01963. MTAP. 1 hit.
InterProiIPR010044. MTAP.
IPR000845. Nucleoside_phosphorylase_d.
IPR001369. PNP/MTAP.
[Graphical view]
PANTHERiPTHR11904. PTHR11904. 1 hit.
PfamiPF01048. PNP_UDP_1. 1 hit.
[Graphical view]
SUPFAMiSSF53167. SSF53167. 1 hit.
TIGRFAMsiTIGR01694. MTAP. 1 hit.

Sequencei

Sequence statusi: Complete.

Q74E52-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEQVIGVIGG SGLYEMEGLQ DVRSIVVETP FGAPSDEFVT GVLDGVRMVF
60 70 80 90 100
LPRHGRGHRL LPTEVNYRAN IYGMKKLGVT RIISVSAVGS MREEIVPGHI
110 120 130 140 150
VIPDQFIDRT NATRANTFFG NGVVAHIQFA DPVCADLSAD LYAAAQEAGA
160 170 180 190 200
TVHRGGTYIC MEGPAFSTRA ESNLYRSFGV SVIGMTNIPE AKLAREAEIC
210 220 230 240 250
YGVIALATDY DCWHESHDDV SVDAIIAIIK QNVAMAKSII RNAVRRIDRE
260 270 280
RNCPCASALR YAIITDKAAI PAETKERLDL IIGSYV
Length:286
Mass (Da):31,105
Last modified:July 5, 2004 - v1
Checksum:i4F7F8EADF7018E50
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE017180 Genomic DNA. Translation: AAR34438.1.
RefSeqiNP_952165.1. NC_002939.5.
WP_010941773.1. NC_002939.5.

Genome annotation databases

EnsemblBacteriaiAAR34438; AAR34438; GSU1112.
GeneIDi2688551.
KEGGigsu:GSU1112.
PATRICi22024986. VBIGeoSul17553_1108.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE017180 Genomic DNA. Translation: AAR34438.1.
RefSeqiNP_952165.1. NC_002939.5.
WP_010941773.1. NC_002939.5.

3D structure databases

ProteinModelPortaliQ74E52.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi243231.GSU1112.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAR34438; AAR34438; GSU1112.
GeneIDi2688551.
KEGGigsu:GSU1112.
PATRICi22024986. VBIGeoSul17553_1108.

Phylogenomic databases

eggNOGiENOG4107RHB. Bacteria.
COG0005. LUCA.
HOGENOMiHOG000228986.
InParanoidiQ74E52.
KOiK00772.
OMAiCVAHVSM.
OrthoDBiPOG091H0228.

Enzyme and pathway databases

UniPathwayiUPA00904; UER00873.

Family and domain databases

Gene3Di3.40.50.1580. 1 hit.
HAMAPiMF_01963. MTAP. 1 hit.
InterProiIPR010044. MTAP.
IPR000845. Nucleoside_phosphorylase_d.
IPR001369. PNP/MTAP.
[Graphical view]
PANTHERiPTHR11904. PTHR11904. 1 hit.
PfamiPF01048. PNP_UDP_1. 1 hit.
[Graphical view]
SUPFAMiSSF53167. SSF53167. 1 hit.
TIGRFAMsiTIGR01694. MTAP. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiMTAP_GEOSL
AccessioniPrimary (citable) accession number: Q74E52
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 25, 2012
Last sequence update: July 5, 2004
Last modified: November 2, 2016
This is version 64 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.