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MTNA_BACLD
ID   MTNA_BACLD              Reviewed;         353 AA.
AC   Q65KK2; Q62W00;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   25-OCT-2004, sequence version 1.
DT   03-AUG-2022, entry version 104.
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}; Synonyms=mtnS, ykrS;
GN   OrderedLocusNames=BLi01511, BL03632;
OS   Bacillus licheniformis (strain ATCC 14580 / DSM 13 / JCM 2505 / CCUG 7422 /
OS   NBRC 12200 / NCIMB 9375 / NCTC 10341 / NRRL NRS-1264 / Gibson 46).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus.
OX   NCBI_TaxID=279010;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 14580 / DSM 13 / JCM 2505 / CCUG 7422 / NBRC 12200 / NCIMB 9375
RC   / NCTC 10341 / NRRL NRS-1264 / Gibson 46;
RX   PubMed=15383718; DOI=10.1159/000079829;
RA   Veith B., Herzberg C., Steckel S., Feesche J., Maurer K.H., Ehrenreich P.,
RA   Baeumer S., Henne A., Liesegang H., Merkl R., Ehrenreich A., Gottschalk G.;
RT   "The complete genome sequence of Bacillus licheniformis DSM13, an organism
RT   with great industrial potential.";
RL   J. Mol. Microbiol. Biotechnol. 7:204-211(2004).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 14580 / DSM 13 / JCM 2505 / CCUG 7422 / NBRC 12200 / NCIMB 9375
RC   / NCTC 10341 / NRRL NRS-1264 / Gibson 46;
RX   PubMed=15461803; DOI=10.1186/gb-2004-5-10-r77;
RA   Rey M.W., Ramaiya P., Nelson B.A., Brody-Karpin S.D., Zaretsky E.J.,
RA   Tang M., Lopez de Leon A., Xiang H., Gusti V., Clausen I.G., Olsen P.B.,
RA   Rasmussen M.D., Andersen J.T., Joergensen P.L., Larsen T.S., Sorokin A.,
RA   Bolotin A., Lapidus A., Galleron N., Ehrlich S.D., Berka R.M.;
RT   "Complete genome sequence of the industrial bacterium Bacillus
RT   licheniformis and comparisons with closely related Bacillus species.";
RL   Genome Biol. 5:R77.1-R77.12(2004).
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; CP000002; AAU23058.1; -; Genomic_DNA.
DR   EMBL; AE017333; AAU40412.1; -; Genomic_DNA.
DR   RefSeq; WP_009328612.1; NC_006322.1.
DR   AlphaFoldDB; Q65KK2; -.
DR   SMR; Q65KK2; -.
DR   STRING; 279010.BL03632; -.
DR   EnsemblBacteria; AAU23058; AAU23058; BL03632.
DR   GeneID; 66216421; -.
DR   KEGG; bld:BLi01511; -.
DR   KEGG; bli:BL03632; -.
DR   eggNOG; COG0182; Bacteria.
DR   HOGENOM; CLU_016218_1_2_9; -.
DR   OMA; GDVIMTH; -.
DR   OrthoDB; 1290468at2; -.
DR   BioCyc; BLIC279010:BLI_RS07495-MON; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000000606; 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..353
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000357149"
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;  38700 MW;  1942BAE22DBB92F4 CRC64;
     MPEQFAVPRS VEWEETSVKI LNQQKLPEKT EYLHLTTKED IYDAIQTLKV RGAPAIGITA
     AFGLALCAQS IDTSDVSAFL RELRKIKDEL NQARPTAVNL SWALNRLLKS AEGAKSVNEA
     KTNLVHEAIQ IQVEDEETCR QIGQNALHLF KSGDSIMTIC NAGSIATSRY GTALSPFYLA
     KTKDLDLHIY ACETRPVLQG ARLTAWELMQ GGIDVTLITD SMAAHTMKEK NISAVIVGAD
     RIARNGDTAN KIGTFGLAIL AKAFQIPFFI AAPLSTFDVS ISCGDDIPIE ERDPDEVRRI
     NGTQIAPQEV PVFNPAFDIT PHDLISGIIT EKGIITDRFE EEIEALFSAE ALT
 
 
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