ID A0A0F3GY25_9BACT Unreviewed; 358 AA.
AC A0A0F3GY25;
DT 24-JUN-2015, integrated into UniProtKB/TrEMBL.
DT 24-JUN-2015, sequence version 1.
DT 27-MAR-2024, entry version 27.
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 ORFNames=MBAV_001044 {ECO:0000313|EMBL:KJU86760.1};
OS Candidatus Magnetobacterium bavaricum.
OC Bacteria; Nitrospirota; Nitrospiria; Nitrospirales; Nitrospiraceae;
OC Magnetobacterium.
OX NCBI_TaxID=29290 {ECO:0000313|EMBL:KJU86760.1, ECO:0000313|Proteomes:UP000033423};
RN [1] {ECO:0000313|EMBL:KJU86760.1, ECO:0000313|Proteomes:UP000033423}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TM-1 {ECO:0000313|EMBL:KJU86760.1};
RA Kolinko S., Richter M., Glockner F.O., Brachmann A., Schuler D.;
RT "Single-cell genomics of uncultivated deep-branching MTB reveals a
RT conserved set of magnetosome genes.";
RL Submitted (FEB-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:KJU86760.1}.
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DR EMBL; LACI01000465; KJU86760.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A0F3GY25; -.
DR PATRIC; fig|29290.4.peg.1380; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000033423; Unassembled WGS sequence.
DR GO; GO:0046523; F:S-methyl-5-thioribose-1-phosphate isomerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-KW.
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 Initiation factor {ECO:0000313|EMBL:KJU86760.1};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_01678};
KW Methionine biosynthesis {ECO:0000256|HAMAP-Rule:MF_01678};
KW Protein biosynthesis {ECO:0000313|EMBL:KJU86760.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000033423}.
FT ACT_SITE 240
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 49..51
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 92
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 199
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 250..251
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT SITE 160
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
SQ SEQUENCE 358 AA; 38773 MW; 46574698B6E112E5 CRC64;
MVNTIEWIER DSSPVVRILD QTILPHRIAY IDCDHYTKVV QCIKQLSIRG APAIGIAAAM
GIALAGYSVD AGVGEGFVLG LRPVMDDFIS SRPTAVNIRW AVERLSGVLS AQKGASVQTL
RDSLVNEARG MLTEDIEINK AIGRWGAQFI KDGARVLTHC NAGSLATGGY GTATAPIRIA
IEQGKRVSVI ADETRPVLQG ARLTSWELLQ DGIDVTLITD NMAGALMKRG EIDLCIVGTD
RTVRNGDVAN KIGTYSVAVL AREHNIPFYV AAPLSSIDFT MSHGDLIPIE ERDGSEVTDV
FGTCRIAPEG VKVRNIAFDV TPARLVTLIF TEKGAFRPQD IHLLEDPTRD IEKLRVSA
//
