ID A0A2N5N9T6_9BACL Unreviewed; 363 AA.
AC A0A2N5N9T6;
DT 25-APR-2018, integrated into UniProtKB/TrEMBL.
DT 25-APR-2018, sequence version 1.
DT 24-JAN-2024, entry version 18.
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=B8V81_1317 {ECO:0000313|EMBL:PLT47093.1};
OS Paenibacillus pasadenensis.
OC Bacteria; Bacillota; Bacilli; Bacillales; Paenibacillaceae; Paenibacillus.
OX NCBI_TaxID=217090 {ECO:0000313|EMBL:PLT47093.1, ECO:0000313|Proteomes:UP000234789};
RN [1] {ECO:0000313|EMBL:PLT47093.1, ECO:0000313|Proteomes:UP000234789}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=R16 {ECO:0000313|EMBL:PLT47093.1,
RC ECO:0000313|Proteomes:UP000234789};
RA Passera A., Marcolungo L., Casati P., Brasca M., Quaglino F.,
RA Delledonne M.;
RT "Functional genome analysis of Paenibacillus pasadenensis strain R16:
RT insights on endophytic life style and antifungal activity.";
RL Submitted (MAY-2017) 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:PLT47093.1}.
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DR EMBL; NFEZ01000003; PLT47093.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2N5N9T6; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000234789; 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 250
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 53..55
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 100
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 209
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 260..261
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT SITE 170
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
SQ SEQUENCE 363 AA; 38703 MW; A4D90E4302331649 CRC64;
MTTASTYPGL ISLIWAGSQL QLLDQRLLPE ETVYLPLTDA EGVWEAIRHM KVRGAPAIGI
AAAYGVVLGS GLPGQEAPDD SLGAWLGRVQ ETAAYLATSR PTAVNLFWAL DRMKARAAAL
AEALVPLDEA KQALLDEAIL IQSEDEATNR RIGEHALELM KDGMGVLTHC NAGGLATAKY
GTALAPFYLA KEQGMNLRVF ADETRPVLQG ARLTAFELQQ AGVDVTLICD NMAGMVMGKG
WIDAVIVGTD RVAANGDVAN KIGTYSVAVL AKAHGIPFYV ACPLSTIDMG TPTGAEIPIE
ERHAEEVTEG FGKRTAPQGV KVFNPAFDVT PAEYVTAIIT EKGVIRPPYG DSLKKLFEKL
KQG
//