ID A0A448YIV0_BRENA Unreviewed; 420 AA.
AC A0A448YIV0;
DT 08-MAY-2019, integrated into UniProtKB/TrEMBL.
DT 08-MAY-2019, sequence version 1.
DT 27-MAR-2024, entry version 17.
DE RecName: Full=Methylthioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_03119};
DE Short=M1Pi {ECO:0000256|HAMAP-Rule:MF_03119};
DE Short=MTR-1-P isomerase {ECO:0000256|HAMAP-Rule:MF_03119};
DE EC=5.3.1.23 {ECO:0000256|HAMAP-Rule:MF_03119};
DE AltName: Full=S-methyl-5-thioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_03119};
DE AltName: Full=Translation initiation factor eIF-2B subunit alpha/beta/delta-like protein {ECO:0000256|HAMAP-Rule:MF_03119};
GN Name=MRI1 {ECO:0000256|HAMAP-Rule:MF_03119};
GN ORFNames=BRENAR_LOCUS1533 {ECO:0000313|EMBL:VEU20798.1};
OS Brettanomyces naardenensis (Yeast).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC Saccharomycetales; Pichiaceae; Brettanomyces.
OX NCBI_TaxID=13370 {ECO:0000313|EMBL:VEU20798.1, ECO:0000313|Proteomes:UP000290900};
RN [1] {ECO:0000313|EMBL:VEU20798.1, ECO:0000313|Proteomes:UP000290900}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Tiukova I., Dainat J.;
RL Submitted (DEC-2018) 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_03119}.
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_03119};
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_03119}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03119}.
CC Nucleus {ECO:0000256|HAMAP-Rule:MF_03119}.
CC -!- SIMILARITY: Belongs to the eIF-2B alpha/beta/delta subunits family.
CC MtnA subfamily. {ECO:0000256|HAMAP-Rule:MF_03119}.
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DR EMBL; CAACVR010000007; VEU20798.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A448YIV0; -.
DR STRING; 13370.A0A448YIV0; -.
DR InParanoid; A0A448YIV0; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000290900; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
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|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_03119}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03119};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_03119};
KW Methionine biosynthesis {ECO:0000256|ARBA:ARBA00023167, ECO:0000256|HAMAP-
KW Rule:MF_03119}; Nucleus {ECO:0000256|HAMAP-Rule:MF_03119};
KW Reference proteome {ECO:0000313|Proteomes:UP000290900}.
FT ACT_SITE 292
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
FT SITE 187
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
SQ SEQUENCE 420 AA; 46626 MW; 634B3DAC145D6FA8 CRC64;
MSLESIKFTE DPIQLVILNQ LLVPYQTEYI RIDSIAPGPD CEFSGYDAIK GMYTRGAPAI
MLVGCFSVVV ELDRVINKDE AETFGYDLAD ELSFKRRLIE RIDKLIKSRP TAVNLANGCN
RIKQIVEDHH IDRNYELLFS TVLVFSRNLL RDDLQANLSI GENGVRYIYD ELTKENFKGD
FSVMTICNTG SLATSGHGTA LGIIRSLFKK ARGSHRGAPF KLSHVYACET RPYNQGSRLT
AYELQYENIP FTLITDNMAS FLIESLNDSG GKARSRGLAD SAPVKFIIVG ADRIVKNGDL
ANKIGTFQLS LIASQYTSVK FIGAAPSTTI DHVRTSGDEI VIEQRPQREL TEVRGGEVND
CGEFVIDSTT GNVKLTKVKL APQGIDVWNP SFDVTPHKYI DCIVTEHGYM TKDPNGGFNL
//
