ID A0A136MFF0_9BACT Unreviewed; 357 AA.
AC A0A136MFF0;
DT 08-JUN-2016, integrated into UniProtKB/TrEMBL.
DT 08-JUN-2016, sequence version 1.
DT 24-JAN-2024, entry version 23.
DE RecName: Full=Methylthioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
DE Short=M1Pi {ECO:0000256|HAMAP-Rule:MF_01678};
DE Short=MTR-1-P isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
DE EC=5.3.1.23 {ECO:0000256|HAMAP-Rule:MF_01678};
DE AltName: Full=S-methyl-5-thioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
GN Name=mtnA {ECO:0000256|HAMAP-Rule:MF_01678,
GN ECO:0000313|EMBL:KXK32570.1};
GN ORFNames=UZ16_OP3001002564 {ECO:0000313|EMBL:KXK32570.1};
OS Candidatus Hinthialibacteria bacterium OLB16.
OC Bacteria; Candidatus Hinthialibacterota.
OX NCBI_TaxID=1617433 {ECO:0000313|EMBL:KXK32570.1, ECO:0000313|Proteomes:UP000070296};
RN [1] {ECO:0000313|EMBL:KXK32570.1, ECO:0000313|Proteomes:UP000070296}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=OLB16 {ECO:0000313|EMBL:KXK32570.1};
RA Speth D.R., In T Zandt M., Guerrero Cruz S., Jetten M.S., Dutilh B.E.;
RT "Genome based microbial ecology of anammox granules in a full-scale
RT wastewater treatment system.";
RL Submitted (NOV-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the interconversion of methylthioribose-1-phosphate
CC (MTR-1-P) into methylthioribulose-1-phosphate (MTRu-1-P).
CC {ECO:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_01678}.
CC -!- SIMILARITY: Belongs to the EIF-2B alpha/beta/delta subunits family.
CC MtnA subfamily. {ECO:0000256|HAMAP-Rule:MF_01678}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KXK32570.1}.
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DR EMBL; LMZT01000130; KXK32570.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A136MFF0; -.
DR STRING; 1617433.UZ16_OP3001002564; -.
DR PATRIC; fig|1617433.3.peg.2760; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000070296; Unassembled WGS sequence.
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; translation initiation factor eif-2b, domain 1; 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 NCBIfam; TIGR00524; eIF-2B_rel; 1.
DR NCBIfam; TIGR00512; salvage_mtnA; 1.
DR PANTHER; PTHR43475; METHYLTHIORIBOSE-1-PHOSPHATE ISOMERASE; 1.
DR PANTHER; PTHR43475:SF1; METHYLTHIORIBOSE-1-PHOSPHATE ISOMERASE; 1.
DR Pfam; PF01008; IF-2B; 1.
DR SUPFAM; SSF100950; NagB/RpiA/CoA transferase-like; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_01678};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_01678};
KW Methionine biosynthesis {ECO:0000256|HAMAP-Rule:MF_01678}.
FT ACT_SITE 243
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 51..53
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 94
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 202
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 253..254
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT SITE 162
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
SQ SEQUENCE 357 AA; 38139 MW; 6020184BA6957962 CRC64;
MKKESTHPPI ISWEGQAVGL LDQTLLPHEE KFILCDTLPA LWEAIKSLRV RGAPAIGVSA
AYGVVLAAEL CRTMDPDVFA REVHEGIDYL ATSRPTAVNL FWALERMRGC LDSMAGSGVA
QQKAHLLEEA RRIEAENNQV CETLSEAGAN LLKDGFRVIT HCNAGGLACG NFYGTALGVI
LKASEQGKRI SVYADETRPL LQGSRLTAYE LHKAGVPVTL LCDNMAGHVM RTIGVDAVIF
GADRIAANGD TANKIGSYSL SVLAREHGVP VYVAAPLSTV DFTLSSGELI PIEVRNSAEV
AGFAGIRTAP EGVEVYNPAF DVTPARYITA IITEAGVLYP PFEKSLGRLA PGYSTVS
//
