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MTNA_GLUOX
ID   MTNA_GLUOX              Reviewed;         368 AA.
AC   Q5FQK0;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2005, 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=GOX1605;
OS   Gluconobacter oxydans (strain 621H) (Gluconobacter suboxydans).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC   Acetobacteraceae; Gluconobacter.
OX   NCBI_TaxID=290633;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=621H;
RX   PubMed=15665824; DOI=10.1038/nbt1062;
RA   Prust C., Hoffmeister M., Liesegang H., Wiezer A., Fricke W.F.,
RA   Ehrenreich A., Gottschalk G., Deppenmeier U.;
RT   "Complete genome sequence of the acetic acid bacterium Gluconobacter
RT   oxydans.";
RL   Nat. Biotechnol. 23:195-200(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}.
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DR   EMBL; CP000009; AAW61346.1; -; Genomic_DNA.
DR   RefSeq; WP_011253129.1; NZ_LT900338.1.
DR   AlphaFoldDB; Q5FQK0; -.
DR   SMR; Q5FQK0; -.
DR   STRING; 290633.GOX1605; -.
DR   EnsemblBacteria; AAW61346; AAW61346; GOX1605.
DR   KEGG; gox:GOX1605; -.
DR   eggNOG; COG0182; Bacteria.
DR   HOGENOM; CLU_016218_1_2_5; -.
DR   OMA; RLWVDET; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000006375; 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..368
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000357192"
FT   ACT_SITE        245
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         54..56
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         91
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         204
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   BINDING         255..256
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
FT   SITE            165
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01678"
SQ   SEQUENCE   368 AA;  40098 MW;  8C6D2979951E3DCB CRC64;
     MKINGISYRS LWRPSDDASS IRIFDQTRFP WNVEILELRD VGAVADAITS MQVRGAPLIG
     AVAAYGLVFA LQDDASDEAL EKAAAFLVAT RPTAINLRWA IERMVARLKA VRPTERVAAG
     YVEADAICDE DVQVNEAIGR HGLELIREIW ERKGKQGQVN LLTHCNAGWI ATVDWGTALA
     PIYMAHDEGI PVHVWVDETR PRNQGSLLTA WELGSHGVPH TVIADNAGGH YMQTGRVDMV
     IVGTDRVTAQ GDVANKIGTY LKALAAHDNN VPFWVALPSS TIDWRVRDGV KDIPIEERSA
     DEVLFMTGLD SNGEAGRVRI APLNSPAANP AFDVTPARLV TGLITERGRC DASEAGLQSL
     FPEQTKAH
 
 
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