ID   MTNA_FUSV7              Reviewed;         388 AA.
AC   C7Z638;
DT   30-NOV-2010, integrated into UniProtKB/Swiss-Prot.
DT   13-OCT-2009, sequence version 1.
DT   25-MAY-2022, entry version 59.
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=NECHADRAFT_57836;
OS   Fusarium vanettenii (strain ATCC MYA-4622 / CBS 123669 / FGSC 9596 / NRRL
OS   45880 / 77-13-4) (Fusarium solani subsp. pisi).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Sordariomycetes;
OC   Hypocreomycetidae; Hypocreales; Nectriaceae; Fusarium;
OC   Fusarium solani species complex; Fusarium vanettenii.
OX   NCBI_TaxID=660122;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC MYA-4622 / CBS 123669 / FGSC 9596 / NRRL 45880 / 77-13-4;
RX   PubMed=19714214; DOI=10.1371/journal.pgen.1000618;
RA   Coleman J.J., Rounsley S.D., Rodriguez-Carres M., Kuo A., Wasmann C.C.,
RA   Grimwood J., Schmutz J., Taga M., White G.J., Zhou S., Schwartz D.C.,
RA   Freitag M., Ma L.-J., Danchin E.G.J., Henrissat B., Coutinho P.M.,
RA   Nelson D.R., Straney D., Napoli C.A., Barker B.M., Gribskov M., Rep M.,
RA   Kroken S., Molnar I., Rensing C., Kennell J.C., Zamora J., Farman M.L.,
RA   Selker E.U., Salamov A., Shapiro H., Pangilinan J., Lindquist E.,
RA   Lamers C., Grigoriev I.V., Geiser D.M., Covert S.F., Temporini E.,
RA   VanEtten H.D.;
RT   "The genome of Nectria haematococca: contribution of supernumerary
RT   chromosomes to gene expansion.";
RL   PLoS Genet. 5:E1000618-E1000618(2009).
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; GG698910; EEU40061.1; -; Genomic_DNA.
DR   RefSeq; XP_003045774.1; XM_003045728.1.
DR   AlphaFoldDB; C7Z638; -.
DR   SMR; C7Z638; -.
DR   STRING; 140110.NechaP57836; -.
DR   EnsemblFungi; NechaT57836; NechaP57836; NechaG57836.
DR   GeneID; 9678447; -.
DR   KEGG; nhe:NECHADRAFT_57836; -.
DR   eggNOG; KOG1468; Eukaryota.
DR   HOGENOM; CLU_016218_1_3_1; -.
DR   InParanoid; C7Z638; -.
DR   OMA; RLWVDET; -.
DR   OrthoDB; 1410886at2759; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000005206; 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..388
FT                   /note="Methylthioribose-1-phosphate isomerase"
FT                   /id="PRO_0000402034"
FT   ACT_SITE        253
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
FT   SITE            169
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
SQ   SEQUENCE   388 AA;  42201 MW;  CD94C17ADB19A2BE CRC64;
     MSTLQAVKYI RGKLEVLDQL RLPHEFHYDE VSNRTEAFDS IYTMRVRGAP AIAIVAALGL
     AVELHNGSCT ASSAEETIGQ IEEALDYLKE SRPTAVDLTN AINQLKARIR EVGSTATKEA
     IISAFIEEAE KIFEKDLKTN LSIGDFGAEW LRAQVGASPE QQISVLTHCN TGSLATSGHG
     TALGIIRTLQ AKKLLHHAFC TETRPYNQGS RLTAFELVFE GIPSTLITDS MAASLFRTRK
     QEKNIAAVIV GADRVVRNGD TANKIGTYQL AVLAKHHGVK FIVAAPTTSI DLETETGDGI
     KIEERKKEEL TQVTGAVIKP DGTVDESSKV RVATADQRIN VWNPAFDVTP AEFIDAVVTE
     KGAIEKGPDG KFDFSQILPE RWAKITGA