ID I2H414_TETBL Unreviewed; 418 AA.
AC I2H414;
DT 11-JUL-2012, integrated into UniProtKB/TrEMBL.
DT 11-JUL-2012, sequence version 1.
DT 27-MAR-2024, entry version 49.
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=TBLA0E00550 {ECO:0000313|EMBL:CCH61116.1};
GN Synonyms=MRI1 {ECO:0000256|HAMAP-Rule:MF_03119};
GN ORFNames=TBLA_0E00550 {ECO:0000313|EMBL:CCH61116.1};
OS Tetrapisispora blattae (strain ATCC 34711 / CBS 6284 / DSM 70876 / NBRC
OS 10599 / NRRL Y-10934 / UCD 77-7) (Yeast) (Kluyveromyces blattae).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC Saccharomycetales; Saccharomycetaceae; Tetrapisispora.
OX NCBI_TaxID=1071380 {ECO:0000313|EMBL:CCH61116.1, ECO:0000313|Proteomes:UP000002866};
RN [1] {ECO:0000313|EMBL:CCH61116.1, ECO:0000313|Proteomes:UP000002866}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 34711 / CBS 6284 / DSM 70876 / NBRC 10599 / NRRL Y-10934 /
RC UCD 77-7 {ECO:0000313|Proteomes:UP000002866};
RX PubMed=22123960; DOI=10.1073/pnas.1112808108;
RA Gordon J.L., Armisen D., Proux-Wera E., OhEigeartaigh S.S., Byrne K.P.,
RA Wolfe K.H.;
RT "Evolutionary erosion of yeast sex chromosomes by mating-type switching
RT accidents.";
RL Proc. Natl. Acad. Sci. U.S.A. 108:20024-20029(2011).
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; HE806320; CCH61116.1; -; Genomic_DNA.
DR RefSeq; XP_004180635.1; XM_004180587.1.
DR AlphaFoldDB; I2H414; -.
DR STRING; 1071380.I2H414; -.
DR GeneID; 14496629; -.
DR KEGG; tbl:TBLA_0E00550; -.
DR eggNOG; KOG1468; Eukaryota.
DR HOGENOM; CLU_016218_1_3_1; -.
DR InParanoid; I2H414; -.
DR OMA; TDNMAGY; -.
DR OrthoDB; 4853at2759; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000002866; Chromosome 5.
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};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, 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:UP000002866}.
FT ACT_SITE 285
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
FT SITE 185
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
SQ SEQUENCE 418 AA; 46311 MW; D5750FC023753917 CRC64;
MSLEAIRFNR INPKKISVEV LDQLLLPYVT KYLPIYNISD GYAVIKSMQV RGAPAIAIVG
ALSVLLETQH LLNTQDKLET SIYGSDLQNW GAIKFKLFTR LDFLLSSRPT AVNLSNALKD
IRLIALDPKI TSLESFNQFL FTFVCKLVDD DLSNNIKMGN NGAKFLLDSL KAENFNEDFA
VLTICNTGSL ATSGYGTALG VIRSLWNDSQ SKVGLLPSEQ ALSDSKAKLT HVYPLETRPY
NQGSRLTAYE LIHDKIPTTL ITDSSIAYRI KTSKIPIKAA FVGADRIVRN GDTANKIGTF
QLAIICKQFG IKFFVVAPKT TIDNVTETGD GIIVEERKPN EMKLVTGTSM HPETEEVLID
EKSGSIMTHK VGIAPPDVDV WNPSFDVTPY NFITGIVTEE GVFTRNPKTD KFELDELF
//
