ID   MTNA_DEHM1              Reviewed;         334 AA.
AC   Q3Z937;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   27-SEP-2005, sequence version 1.
DT   03-AUG-2022, entry version 95.
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=DET0518;
OS   Dehalococcoides mccartyi (strain ATCC BAA-2266 / KCTC 15142 / 195)
OS   (Dehalococcoides ethenogenes (strain 195)).
OC   Bacteria; Chloroflexi; Dehalococcoidia; Dehalococcoidales;
OC   Dehalococcoidaceae; Dehalococcoides.
OX   NCBI_TaxID=243164;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-2266 / KCTC 15142 / 195;
RX   PubMed=15637277; DOI=10.1126/science.1102226;
RA   Seshadri R., Adrian L., Fouts D.E., Eisen J.A., Phillippy A.M., Methe B.A.,
RA   Ward N.L., Nelson W.C., DeBoy R.T., Khouri H.M., Kolonay J.F., Dodson R.J.,
RA   Daugherty S.C., Brinkac L.M., Sullivan S.A., Madupu R., Nelson K.E.,
RA   Kang K.H., Impraim M., Tran K., Robinson J.M., Forberger H.A., Fraser C.M.,
RA   Zinder S.H., Heidelberg J.F.;
RT   "Genome sequence of the PCE-dechlorinating bacterium Dehalococcoides
RT   ethenogenes.";
RL   Science 307:105-108(2005).
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; CP000027; AAW40225.1; -; Genomic_DNA.
DR   RefSeq; WP_010936295.1; NC_002936.3.
DR   AlphaFoldDB; Q3Z937; -.
DR   SMR; Q3Z937; -.
DR   STRING; 243164.DET0518; -.
DR   EnsemblBacteria; AAW40225; AAW40225; DET0518.
DR   KEGG; det:DET0518; -.
DR   eggNOG; COG0182; Bacteria.
DR   HOGENOM; CLU_016218_1_2_0; -.
DR   OMA; RLWVDET; -.
DR   OrthoDB; 1290468at2; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000008289; 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..334
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000357171"
FT   ACT_SITE        233
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         44..46
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         192
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         243..244
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   SITE            153
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
SQ   SEQUENCE   334 AA;  35978 MW;  AF04CF59913AADA9 CRC64;
     MKAIEWRDNR LIILDQTLLP LEEKYLELND YHAVAEAIKT LRVRGAPSIG VAAAYGIALG
     ALGIETQYCS EFLPLYQQVS AEIASTRPTA KNLFMAAERM DHVVASGTDV SQVKISLVEE
     AVKIHHEEEE ASRKISAFGA ELIQPGWTVL THCNAGPLAT AGYGTALGVI IAAHQQGKNI
     SAFATETRPL LQGARLTALE LKEAGIPFKL ITDSMAGHFM QKGVINAVVV GADRIAKNGD
     TANKIGTYSL AVLALAHGIP FYVAAPSSTF DKSIESGRDI VIEERKPEEI TQIRGQRIAP
     ENIAVANPAF DVTPANLITA FITENGIIRR EAKN