ID   MTNA_SYNWW              Reviewed;         346 AA.
AC   Q0AYV4;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   17-OCT-2006, sequence version 1.
DT   03-AUG-2022, entry version 90.
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=Swol_0779;
OS   Syntrophomonas wolfei subsp. wolfei (strain DSM 2245B / Goettingen).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Syntrophomonadaceae;
OC   Syntrophomonas.
OX   NCBI_TaxID=335541;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 2245B / Goettingen;
RX   PubMed=21966920; DOI=10.1111/j.1462-2920.2010.02237.x;
RA   Sieber J.R., Sims D.R., Han C., Kim E., Lykidis A., Lapidus A.L.,
RA   McDonnald E., Rohlin L., Culley D.E., Gunsalus R., McInerney M.J.;
RT   "The genome of Syntrophomonas wolfei: new insights into syntrophic
RT   metabolism and biohydrogen production.";
RL   Environ. Microbiol. 12:2289-2301(2010).
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP000448; ABI68100.1; -; Genomic_DNA.
DR   RefSeq; WP_011640205.1; NC_008346.1.
DR   AlphaFoldDB; Q0AYV4; -.
DR   SMR; Q0AYV4; -.
DR   STRING; 335541.Swol_0779; -.
DR   EnsemblBacteria; ABI68100; ABI68100; Swol_0779.
DR   KEGG; swo:Swol_0779; -.
DR   eggNOG; COG0182; Bacteria.
DR   HOGENOM; CLU_016218_1_2_9; -.
DR   OMA; RLWVDET; -.
DR   OrthoDB; 1290468at2; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000001968; 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..346
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000357254"
FT   ACT_SITE        235
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         45..47
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         87
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         194
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         245..246
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   SITE            155
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
SQ   SEQUENCE   346 AA;  38322 MW;  92B50B4834F590B4 CRC64;
     MIRNLYYEEQ ALMILNQNCL PEELVYERCE RPEEVVAAIK GLKVRGAPLI GVTAAFGLAM
     AFSGYSGTGE ARDVYFSRMK ELFAATRPTA VNLFWALERM ERVYRENHHL SPEELARRLC
     QEAQNLYKED IRVNEAIGEQ GQELLGEGSR VMTICNAGAL ATCGYGTALG VIRSAARRNK
     IEMVWACETR PVLQGSRLTV WELWQDKIPV TLLTDNMAGY TMSLGKVDAV ITGADRIATN
     GDTANKIGTY SLAVLAKYHG IPFYVAAPLS TFDWNIKQGG EIPIEERSAE EVRTIKGSCL
     TVPVVDVFNP AFDITPEHLI TAIICEKGII RPPFGAAIKI WGREGE