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MTNA_DECAR
ID   MTNA_DECAR              Reviewed;         362 AA.
AC   Q47AR7;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2005, sequence version 1.
DT   03-AUG-2022, entry version 89.
DE   RecName: Full=Methylthioribose-1-phosphate isomerase {ECO:0000255|HAMAP-Rule:MF_01678};
DE            Short=M1Pi {ECO:0000255|HAMAP-Rule:MF_01678};
DE            Short=MTR-1-P isomerase {ECO:0000255|HAMAP-Rule:MF_01678};
DE            EC=5.3.1.23 {ECO:0000255|HAMAP-Rule:MF_01678};
DE   AltName: Full=S-methyl-5-thioribose-1-phosphate isomerase {ECO:0000255|HAMAP-Rule:MF_01678};
GN   Name=mtnA {ECO:0000255|HAMAP-Rule:MF_01678}; OrderedLocusNames=Daro_3335;
OS   Dechloromonas aromatica (strain RCB).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Rhodocyclales; Azonexaceae;
OC   Dechloromonas.
OX   NCBI_TaxID=159087;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RCB;
RX   PubMed=19650930; DOI=10.1186/1471-2164-10-351;
RA   Salinero K.K., Keller K., Feil W.S., Feil H., Trong S., Di Bartolo G.,
RA   Lapidus A.;
RT   "Metabolic analysis of the soil microbe Dechloromonas aromatica str. RCB:
RT   indications of a surprisingly complex life-style and cryptic anaerobic
RT   pathways for aromatic degradation.";
RL   BMC Genomics 10:351-351(2009).
CC   -!- FUNCTION: Catalyzes the interconversion of methylthioribose-1-phosphate
CC       (MTR-1-P) into methylthioribulose-1-phosphate (MTRu-1-P).
CC       {ECO:0000255|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:0000255|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:0000255|HAMAP-Rule:MF_01678}.
CC   -!- SIMILARITY: Belongs to the eIF-2B alpha/beta/delta subunits family.
CC       MtnA subfamily. {ECO:0000305}.
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DR   EMBL; CP000089; AAZ48064.1; -; Genomic_DNA.
DR   RefSeq; WP_011289060.1; NC_007298.1.
DR   AlphaFoldDB; Q47AR7; -.
DR   SMR; Q47AR7; -.
DR   STRING; 159087.Daro_3335; -.
DR   EnsemblBacteria; AAZ48064; AAZ48064; Daro_3335.
DR   KEGG; dar:Daro_3335; -.
DR   eggNOG; COG0182; Bacteria.
DR   HOGENOM; CLU_016218_1_2_4; -.
DR   OMA; RLWVDET; -.
DR   OrthoDB; 1290468at2; -.
DR   UniPathway; UPA00904; UER00874.
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; -; 1.
DR   Gene3D; 3.40.50.10470; -; 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   Pfam; PF01008; IF-2B; 1.
DR   SUPFAM; SSF100950; SSF100950; 1.
DR   TIGRFAMs; TIGR00524; eIF-2B_rel; 1.
DR   TIGRFAMs; TIGR00512; salvage_mtnA; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Isomerase; Methionine biosynthesis.
FT   CHAIN           1..362
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000357170"
FT   ACT_SITE        241
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         53..55
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         90
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         201
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         251..252
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   SITE            162
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
SQ   SEQUENCE   362 AA;  38703 MW;  79EE551C902CAB13 CRC64;
     MNIDGIPTRT LRAHPDRRAI DIIDQTRLPH ALHWVRVATL EEAAHAIRAM QVRGAPLIGA
     TAAYGLAIAL DFEASDRRLA EAVALLGATR PTAVNLHWAL ARMENILRPL APEARCDAAW
     AEAAAIAEED VAQNAAIGQH GLKLWNDLIV ADGQTLNIMT HCNAGWLATV DWGTALSPVY
     AAHDAGVPVH VWVSETRPRN QGLLTAWELE QHGVPHTLIA DNAAGLLMRN GKVDAVIVGA
     DRIAANGDVA NKVGTYLKAL ACADNGIPFY VAAPRSTLDF ACPEGASIPI EERDGDEFRL
     VHGLDSRGVP SALRQLPAGE DVANPAFDVT PNWLVKAIIT ERGVCPASRD GLLALYPEEA
     RG
 
 
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