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MTNA_BACVZ
ID   MTNA_BACVZ              Reviewed;         353 AA.
AC   A7Z3X0;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 94.
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=RBAM_013330;
OS   Bacillus velezensis (strain DSM 23117 / BGSC 10A6 / LMG 26770 / FZB42)
OS   (Bacillus amyloliquefaciens subsp. plantarum).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus amyloliquefaciens group.
OX   NCBI_TaxID=326423;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 23117 / BGSC 10A6 / LMG 26770 / FZB42;
RX   PubMed=17704766; DOI=10.1038/nbt1325;
RA   Chen X.H., Koumoutsi A., Scholz R., Eisenreich A., Schneider K.,
RA   Heinemeyer I., Morgenstern B., Voss B., Hess W.R., Reva O., Junge H.,
RA   Voigt B., Jungblut P.R., Vater J., Suessmuth R., Liesegang H.,
RA   Strittmatter A., Gottschalk G., Borriss R.;
RT   "Comparative analysis of the complete genome sequence of the plant growth-
RT   promoting bacterium Bacillus amyloliquefaciens FZB42.";
RL   Nat. Biotechnol. 25:1007-1014(2007).
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; CP000560; ABS73696.1; -; Genomic_DNA.
DR   RefSeq; WP_012117409.1; NC_009725.2.
DR   AlphaFoldDB; A7Z3X0; -.
DR   SMR; A7Z3X0; -.
DR   STRING; 326423.RBAM_013330; -.
DR   EnsemblBacteria; ABS73696; ABS73696; RBAM_013330.
DR   KEGG; bay:RBAM_013330; -.
DR   HOGENOM; CLU_016218_1_2_9; -.
DR   OMA; GDVIMTH; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000001120; 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.
FT   CHAIN           1..353
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000357140"
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   353 AA;  38859 MW;  FD47AF48959A3294 CRC64;
     MTNEFAIPRS VEWKETYIRI LNQQKLPDVT EYVELETKED VFDAIVTLKV RGAPAIGITA
     AFGLALSAKS FEARDLSDFR RQFADVKTYL NSSRPTAVNL AWALDRLTDS IRDAISINEA
     KTTLVHEAIQ IQIEDEETCR MIGQNALHLF KKGDQIMTIC NAGSIATSRY GTALAPFYLA
     KQKDLGLHIY ACETRPVLQG SRLTAWELMQ GGIDVTLITD SMAAHTMKEK HISAVIVGAD
     RIAKNGDTAN KIGTYGLAIL ANAFQIPFFV AAPLSTFDLQ IENGDQIPIE ERDPDEVRQI
     SGIRTAPEDV PVFNPAFDIT PGSLISGIIT EKGIVTGSYT EEIEQLFADC QLS
 
 
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