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MTNA_GEOSW
ID   MTNA_GEOSW              Reviewed;         356 AA.
AC   C5D7U5;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   03-AUG-2022, entry version 70.
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=GWCH70_0846;
OS   Geobacillus sp. (strain WCH70).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Geobacillus;
OC   unclassified Geobacillus.
OX   NCBI_TaxID=471223;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WCH70;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Chertkov O., Brettin T., Detter J.C.,
RA   Han C., Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N.,
RA   Brumm P., Mead D.A., Richardson P.;
RT   "Complete sequence of chromosome of Geopacillus sp. WCH70.";
RL   Submitted (JUN-2009) to the EMBL/GenBank/DDBJ databases.
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   -!- SUBUNIT: Homodimer.
CC   -!- SIMILARITY: Belongs to the eIF-2B alpha/beta/delta subunits family.
CC       MtnA subfamily. {ECO:0000305}.
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DR   EMBL; CP001638; ACS23726.1; -; Genomic_DNA.
DR   RefSeq; WP_012749522.1; NC_012793.1.
DR   AlphaFoldDB; C5D7U5; -.
DR   SMR; C5D7U5; -.
DR   STRING; 471223.GWCH70_0846; -.
DR   EnsemblBacteria; ACS23726; ACS23726; GWCH70_0846.
DR   KEGG; gwc:GWCH70_0846; -.
DR   eggNOG; COG0182; Bacteria.
DR   HOGENOM; CLU_016218_1_2_9; -.
DR   OMA; GDVIMTH; -.
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..356
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_1000215899"
FT   ACT_SITE        240
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         51..53
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         94
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         199
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         250..251
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   SITE            160
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
SQ   SEQUENCE   356 AA;  38925 MW;  7E951BA8E5106C2F CRC64;
     MAEPFAIPRS VEWNDTHITI LNQQKLPLVT EYLELKNIED VWDAIAALKV RGAPAIGITA
     AYGLALSAQQ YETESLEKFK EHVRKDRDYL ASSRPTAVNL FWALDRLVSS IAHVSSVNEA
     KTTLIHEAIR IQIEDEDVCR RIGEHALSLF QNGDRVLTIC NAGSIATARY GTALAPFYLA
     KEKGMNLHVY ASETRPVLQG ARLTTWELMQ AGVDVTLITD NMAAQTIKAK NITAVIVGAD
     RIAANGDTAN KIGTFGLALL AKAFGIPFYV AAPLSTIDLA TKTGEEIPIE ERNPEEVTHI
     AGTRIAPEGV NVYNPAFDVT PHDLITAIIT EKGIVRGNYE TELPALFAKE ARHEAI
 
 
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