ID   MTNA_AJEDR              Reviewed;         392 AA.
AC   C5GGE5;
DT   30-NOV-2010, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   25-MAY-2022, entry version 50.
DE   RecName: Full=Methylthioribose-1-phosphate isomerase {ECO:0000255|HAMAP-Rule:MF_03119};
DE            Short=M1Pi {ECO:0000255|HAMAP-Rule:MF_03119};
DE            Short=MTR-1-P isomerase {ECO:0000255|HAMAP-Rule:MF_03119};
DE            EC=5.3.1.23 {ECO:0000255|HAMAP-Rule:MF_03119};
DE   AltName: Full=S-methyl-5-thioribose-1-phosphate isomerase {ECO:0000255|HAMAP-Rule:MF_03119};
DE   AltName: Full=Translation initiation factor eIF-2B subunit alpha/beta/delta-like protein {ECO:0000255|HAMAP-Rule:MF_03119};
GN   Name=MRI1 {ECO:0000255|HAMAP-Rule:MF_03119}; ORFNames=BDCG_03856;
OS   Ajellomyces dermatitidis (strain ER-3 / ATCC MYA-2586) (Blastomyces
OS   dermatitidis).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Onygenales; Ajellomycetaceae; Blastomyces.
OX   NCBI_TaxID=559297;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ER-3 / ATCC MYA-2586;
RX   PubMed=26439490; DOI=10.1371/journal.pgen.1005493;
RA   Munoz J.F., Gauthier G.M., Desjardins C.A., Gallo J.E., Holder J.,
RA   Sullivan T.D., Marty A.J., Carmen J.C., Chen Z., Ding L., Gujja S.,
RA   Magrini V., Misas E., Mitreva M., Priest M., Saif S., Whiston E.A.,
RA   Young S., Zeng Q., Goldman W.E., Mardis E.R., Taylor J.W., McEwen J.G.,
RA   Clay O.K., Klein B.S., Cuomo C.A.;
RT   "The dynamic genome and transcriptome of the human fungal pathogen
RT   Blastomyces and close relative Emmonsia.";
RL   PLoS Genet. 11:E1005493-E1005493(2015).
CC   -!- FUNCTION: Catalyzes the interconversion of methylthioribose-1-phosphate
CC       (MTR-1-P) into methylthioribulose-1-phosphate (MTRu-1-P).
CC       {ECO:0000255|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:0000255|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:0000255|HAMAP-Rule:MF_03119}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03119}.
CC       Nucleus {ECO:0000255|HAMAP-Rule:MF_03119}.
CC   -!- SIMILARITY: Belongs to the eIF-2B alpha/beta/delta subunits family.
CC       MtnA subfamily. {ECO:0000255|HAMAP-Rule:MF_03119}.
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DR   EMBL; EQ999975; EEQ88736.1; -; Genomic_DNA.
DR   AlphaFoldDB; C5GGE5; -.
DR   SMR; C5GGE5; -.
DR   STRING; 559297.C5GGE5; -.
DR   EnsemblFungi; EEQ88736; EEQ88736; BDCG_03856.
DR   VEuPathDB; FungiDB:BDCG_03856; -.
DR   eggNOG; KOG1468; Eukaryota.
DR   HOGENOM; CLU_016218_1_3_1; -.
DR   OMA; RLWVDET; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000002039; 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; -; 1.
DR   Gene3D; 3.40.50.10470; -; 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   Pfam; PF01008; IF-2B; 1.
DR   SUPFAM; SSF100950; SSF100950; 1.
DR   TIGRFAMs; TIGR00524; eIF-2B_rel; 1.
DR   TIGRFAMs; TIGR00512; salvage_mtnA; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Isomerase; Methionine biosynthesis;
KW   Nucleus; Reference proteome.
FT   CHAIN           1..392
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000402009"
FT   ACT_SITE        267
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
FT   SITE            179
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
SQ   SEQUENCE   392 AA;  41359 MW;  D8E2C848CCFB9C3F CRC64;
     MTLAAITYTR GSLSILNQLL LPHQTTYDPL HSACDAWHAI HEMRVRGAPA IAIVAALSLA
     VELDALAANN QLSPEPKEVE VFIREKLEYL VSSRPTAVNL AEAAGRLGGI VSAKAEVRGV
     DGREVAEAYI AAAQRMLEDD VKDNRAIGEF GARWVLENGV ATGSESGSEK GKVAVLTHCN
     TGSLATAGYG TALGVIRSLH ATGSLERAYC TETRPYNQGS RLTAYELVHD KIPATLITDN
     MAAALLARNR AGSAASVGVS AIIVGADRVA ANGDTANKIG TYGLAVLAKY HGVKFLVAAP
     RTTIDMNTKT GADIVIEERP KQEVTRVRGP RAGEEVDGLR AMETITVAAN GIDVWNPAFD
     VTPAALIDGI ITEVGVVEKD ASGAFHLARI FE