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MTNA_THET8
ID   MTNA_THET8              Reviewed;         330 AA.
AC   Q5SJE2;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-DEC-2004, sequence version 1.
DT   03-AUG-2022, entry version 93.
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=TTHA1072;
OS   Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8).
OC   Bacteria; Deinococcus-Thermus; Deinococci; Thermales; Thermaceae; Thermus.
OX   NCBI_TaxID=300852;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27634 / DSM 579 / HB8;
RA   Masui R., Kurokawa K., Nakagawa N., Tokunaga F., Koyama Y., Shibata T.,
RA   Oshima T., Yokoyama S., Yasunaga T., Kuramitsu S.;
RT   "Complete genome sequence of Thermus thermophilus HB8.";
RL   Submitted (NOV-2004) 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   -!- SIMILARITY: Belongs to the eIF-2B alpha/beta/delta subunits family.
CC       MtnA subfamily. {ECO:0000305}.
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DR   EMBL; AP008226; BAD70895.1; -; Genomic_DNA.
DR   RefSeq; WP_011228421.1; NC_006461.1.
DR   RefSeq; YP_144338.1; NC_006461.1.
DR   AlphaFoldDB; Q5SJE2; -.
DR   SMR; Q5SJE2; -.
DR   STRING; 300852.55772454; -.
DR   EnsemblBacteria; BAD70895; BAD70895; BAD70895.
DR   GeneID; 3168231; -.
DR   KEGG; ttj:TTHA1072; -.
DR   PATRIC; fig|300852.9.peg.1052; -.
DR   eggNOG; COG0182; Bacteria.
DR   HOGENOM; CLU_016218_1_2_0; -.
DR   OMA; RLWVDET; -.
DR   PhylomeDB; Q5SJE2; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000000532; 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; -; 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;
KW   Reference proteome.
FT   CHAIN           1..330
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000357265"
FT   ACT_SITE        220
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         49..51
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         83
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         179
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         230..231
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   SITE            140
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
SQ   SEQUENCE   330 AA;  36206 MW;  F0B65E1D3E97448F CRC64;
     MDRVLPFRFA EEEGVFWLLD QRRLPQEEVY VPVRTAREMA QAIRDMVVRG APAIGVSAAF
     GMVLAHLAGE DLEEADRRLR ASRPTAVNLF HALDRMRPFW GDLAGSLLEA RRIWREVEET
     EAAISRHGAQ VLWGQVLTHC NTGPLATGGY GTALGAIVEA YRLGRVRHVW VDETRPYLQG
     ARLTAYELQK AGVPATLITD GMAGWLMARG AVDAVVVGVD RMALNGDFAN KVGTYALAVL
     AHHHGIPFYA ALPLSSVDPR LASGEGIPIE ERSPEEVVAF RGVRIAPEGF PAYHPAFDVT
     PHRYLTGIIT EKGVLYPPFA EGLRRALGLD
 
 
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