ID   MTNA_CANGA              Reviewed;         415 AA.
AC   Q6FVY2;
DT   30-NOV-2010, integrated into UniProtKB/Swiss-Prot.
DT   19-JUL-2004, sequence version 1.
DT   25-MAY-2022, entry version 106.
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};
GN   OrderedLocusNames=CAGL0D04576g;
OS   Candida glabrata (strain ATCC 2001 / CBS 138 / JCM 3761 / NBRC 0622 / NRRL
OS   Y-65) (Yeast) (Torulopsis glabrata).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Saccharomycetaceae; Nakaseomyces;
OC   Nakaseomyces/Candida clade.
OX   NCBI_TaxID=284593;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 2001 / CBS 138 / JCM 3761 / NBRC 0622 / NRRL Y-65;
RX   PubMed=15229592; DOI=10.1038/nature02579;
RA   Dujon B., Sherman D., Fischer G., Durrens P., Casaregola S., Lafontaine I.,
RA   de Montigny J., Marck C., Neuveglise C., Talla E., Goffard N., Frangeul L.,
RA   Aigle M., Anthouard V., Babour A., Barbe V., Barnay S., Blanchin S.,
RA   Beckerich J.-M., Beyne E., Bleykasten C., Boisrame A., Boyer J.,
RA   Cattolico L., Confanioleri F., de Daruvar A., Despons L., Fabre E.,
RA   Fairhead C., Ferry-Dumazet H., Groppi A., Hantraye F., Hennequin C.,
RA   Jauniaux N., Joyet P., Kachouri R., Kerrest A., Koszul R., Lemaire M.,
RA   Lesur I., Ma L., Muller H., Nicaud J.-M., Nikolski M., Oztas S.,
RA   Ozier-Kalogeropoulos O., Pellenz S., Potier S., Richard G.-F.,
RA   Straub M.-L., Suleau A., Swennen D., Tekaia F., Wesolowski-Louvel M.,
RA   Westhof E., Wirth B., Zeniou-Meyer M., Zivanovic Y., Bolotin-Fukuhara M.,
RA   Thierry A., Bouchier C., Caudron B., Scarpelli C., Gaillardin C.,
RA   Weissenbach J., Wincker P., Souciet J.-L.;
RT   "Genome evolution in yeasts.";
RL   Nature 430:35-44(2004).
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; CR380950; CAG58523.1; -; Genomic_DNA.
DR   RefSeq; XP_445612.1; XM_445612.1.
DR   AlphaFoldDB; Q6FVY2; -.
DR   SMR; Q6FVY2; -.
DR   STRING; 5478.XP_445612.1; -.
DR   EnsemblFungi; CAG58523; CAG58523; CAGL0D04576g.
DR   GeneID; 2887005; -.
DR   KEGG; cgr:CAGL0D04576g; -.
DR   CGD; CAL0128175; MRI1.
DR   VEuPathDB; FungiDB:CAGL0D04576g; -.
DR   eggNOG; KOG1468; Eukaryota.
DR   HOGENOM; CLU_016218_1_3_1; -.
DR   InParanoid; Q6FVY2; -.
DR   OMA; RLWVDET; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000002428; Chromosome D.
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..415
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000402021"
FT   ACT_SITE        284
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
FT   SITE            182
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
SQ   SEQUENCE   415 AA;  46184 MW;  E6C4D033EAA18F97 CRC64;
     MNALRAIDFK RDDPNNVSVS VLDQLLLPYT TKYIPIYTID DGFTVIKKMQ VRGAPAIAIV
     GALSVLMESQ LLLSEGFCKT QYYYNLNDWE NIRSKIDERL AFLLSSRPTA INLSNALDEI
     KIVLDSASDL QTFKNNLFDY VCKLIDDDFA NNKRMGDNGA EFLLNLLKKE NFNEDFAVFT
     ICNTGSLATS GYGTALGVIR SLWNDSKSKT QEGNPNKKVK LTESSPKMVQ VFPLETRPYN
     QGSRLTAYEL VHDDIPATLI PDSSIAYKIM TSKIPIKAAF VGADRIVRNG DTANKIGTLQ
     LAIICKQFGI KFFVVAPRTT IDKVTEEGKD IIVEERNANE FKIVTGSAVD MQTNKPILDE
     KNEPITAKVG IAPENINVWN PAFDITSFEY IDGIVTEVGV FTKNENGNFD LSALH