ID G8QKH0_AZOOP Unreviewed; 363 AA.
AC G8QKH0;
DT 22-FEB-2012, integrated into UniProtKB/TrEMBL.
DT 22-FEB-2012, sequence version 1.
DT 27-MAR-2024, entry version 59.
DE RecName: Full=Methylthioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
DE Short=M1Pi {ECO:0000256|HAMAP-Rule:MF_01678};
DE Short=MTR-1-P isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
DE EC=5.3.1.23 {ECO:0000256|HAMAP-Rule:MF_01678};
DE AltName: Full=S-methyl-5-thioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
GN Name=mtnA {ECO:0000256|HAMAP-Rule:MF_01678};
GN OrderedLocusNames=Dsui_3379 {ECO:0000313|EMBL:AEV27709.1};
OS Azospira oryzae (strain ATCC BAA-33 / DSM 13638 / PS) (Dechlorosoma
OS suillum).
OC Bacteria; Pseudomonadota; Betaproteobacteria; Rhodocyclales;
OC Rhodocyclaceae; Azospira.
OX NCBI_TaxID=640081 {ECO:0000313|EMBL:AEV27709.1, ECO:0000313|Proteomes:UP000005633};
RN [1] {ECO:0000313|EMBL:AEV27709.1, ECO:0000313|Proteomes:UP000005633}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-33 / DSM 13638 / PS
RC {ECO:0000313|Proteomes:UP000005633};
RX PubMed=22535943; DOI=10.1128/JB.00124-12;
RA Byrne-Bailey K.G., Coates J.D.;
RT "Complete genome sequence of the anaerobic perchlorate-reducing bacterium
RT Azospira suillum strain PS.";
RL J. Bacteriol. 194:2767-2768(2012).
CC -!- FUNCTION: Catalyzes the interconversion of methylthioribose-1-phosphate
CC (MTR-1-P) into methylthioribulose-1-phosphate (MTRu-1-P).
CC {ECO:0000256|HAMAP-Rule:MF_01678}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=S-methyl-5-thio-alpha-D-ribose 1-phosphate = S-methyl-5-thio-
CC D-ribulose 1-phosphate; Xref=Rhea:RHEA:19989, ChEBI:CHEBI:58533,
CC ChEBI:CHEBI:58548; EC=5.3.1.23; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_01678};
CC -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via salvage
CC pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate:
CC step 1/6. {ECO:0000256|HAMAP-Rule:MF_01678}.
CC -!- SIMILARITY: Belongs to the EIF-2B alpha/beta/delta subunits family.
CC MtnA subfamily. {ECO:0000256|HAMAP-Rule:MF_01678}.
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DR EMBL; CP003153; AEV27709.1; -; Genomic_DNA.
DR RefSeq; WP_014238389.1; NC_016616.1.
DR AlphaFoldDB; G8QKH0; -.
DR STRING; 640081.Dsui_3379; -.
DR KEGG; dsu:Dsui_3379; -.
DR eggNOG; COG0182; Bacteria.
DR HOGENOM; CLU_016218_1_2_4; -.
DR OrthoDB; 9803436at2; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000005633; Chromosome.
DR GO; GO:0046523; F:S-methyl-5-thioribose-1-phosphate isomerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019509; P:L-methionine salvage from methylthioadenosine; IEA:UniProtKB-UniPathway.
DR GO; GO:0019284; P:L-methionine salvage from S-adenosylmethionine; IEA:UniProtKB-UniRule.
DR Gene3D; 1.20.120.420; translation initiation factor eif-2b, domain 1; 1.
DR HAMAP; MF_01678; Salvage_MtnA; 1.
DR InterPro; IPR000649; IF-2B-related.
DR InterPro; IPR005251; IF-M1Pi.
DR InterPro; IPR042529; IF_2B-like_C.
DR InterPro; IPR011559; Initiation_fac_2B_a/b/d.
DR InterPro; IPR027363; M1Pi_N.
DR InterPro; IPR037171; NagB/RpiA_transferase-like.
DR NCBIfam; TIGR00524; eIF-2B_rel; 1.
DR NCBIfam; TIGR00512; salvage_mtnA; 1.
DR PANTHER; PTHR43475; METHYLTHIORIBOSE-1-PHOSPHATE ISOMERASE; 1.
DR PANTHER; PTHR43475:SF1; METHYLTHIORIBOSE-1-PHOSPHATE ISOMERASE; 1.
DR Pfam; PF01008; IF-2B; 1.
DR SUPFAM; SSF100950; NagB/RpiA/CoA transferase-like; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_01678};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_01678};
KW Methionine biosynthesis {ECO:0000256|HAMAP-Rule:MF_01678}.
FT ACT_SITE 240
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 53..55
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 90
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 200
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 250..251
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT SITE 161
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
SQ SEQUENCE 363 AA; 38199 MW; 88AC6480FCF42A81 CRC64;
MSPTTLPSRT LWPVPGTCAV DIIDQTALPH HFRTLRLFTL EEAAHAIRAM QVRGAPLIGA
TAAYGVALAL QRDASDAALS QAVATLGATR PTAINLHWAL NRMQALLRLL PQEDRAEAAW
TEAAAIADED AEQNRRIGQH GLELLRPLAE KRGRLEIMTH CNAGWLATVE HGTALAPVYA
AHAAGLPVHV WVSETRPRNQ GLLTAWELAQ KGVPHTLIAD NAAGLLLARG EVDAVIVGAD
RIAANGDVAN KVGTYLKALA AREAGVPFYV AAPRSTLDFA CPGGAAIPIE EREGDELRLV
HGLDGAGSPG SIRQIAAAEA VANPAFDVTP AGLVAALITE RGACPASADG IFGLYPEEQD
HAR
//
