MTNA_LACBS
ID MTNA_LACBS Reviewed; 382 AA.
AC B0D0U4;
DT 30-NOV-2010, integrated into UniProtKB/Swiss-Prot.
DT 26-FEB-2008, sequence version 1.
DT 25-MAY-2022, entry version 55.
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=LACBIDRAFT_189088;
OS Laccaria bicolor (strain S238N-H82 / ATCC MYA-4686) (Bicoloured deceiver)
OS (Laccaria laccata var. bicolor).
OC Eukaryota; Fungi; Dikarya; Basidiomycota; Agaricomycotina; Agaricomycetes;
OC Agaricomycetidae; Agaricales; Tricholomataceae; Laccaria.
OX NCBI_TaxID=486041;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=S238N-H82 / ATCC MYA-4686;
RX PubMed=18322534; DOI=10.1038/nature06556;
RA Martin F., Aerts A., Ahren D., Brun A., Danchin E.G.J., Duchaussoy F.,
RA Gibon J., Kohler A., Lindquist E., Pereda V., Salamov A., Shapiro H.J.,
RA Wuyts J., Blaudez D., Buee M., Brokstein P., Canbaeck B., Cohen D.,
RA Courty P.E., Coutinho P.M., Delaruelle C., Detter J.C., Deveau A.,
RA DiFazio S., Duplessis S., Fraissinet-Tachet L., Lucic E., Frey-Klett P.,
RA Fourrey C., Feussner I., Gay G., Grimwood J., Hoegger P.J., Jain P.,
RA Kilaru S., Labbe J., Lin Y.C., Legue V., Le Tacon F., Marmeisse R.,
RA Melayah D., Montanini B., Muratet M., Nehls U., Niculita-Hirzel H.,
RA Oudot-Le Secq M.P., Peter M., Quesneville H., Rajashekar B., Reich M.,
RA Rouhier N., Schmutz J., Yin T., Chalot M., Henrissat B., Kuees U.,
RA Lucas S., Van de Peer Y., Podila G.K., Polle A., Pukkila P.J.,
RA Richardson P.M., Rouze P., Sanders I.R., Stajich J.E., Tunlid A.,
RA Tuskan G., Grigoriev I.V.;
RT "The genome of Laccaria bicolor provides insights into mycorrhizal
RT symbiosis.";
RL Nature 452:88-92(2008).
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; DS547095; EDR11522.1; -; Genomic_DNA.
DR RefSeq; XP_001877419.1; XM_001877384.1.
DR AlphaFoldDB; B0D0U4; -.
DR SMR; B0D0U4; -.
DR STRING; 486041.B0D0U4; -.
DR EnsemblFungi; EDR11522; EDR11522; LACBIDRAFT_189088.
DR GeneID; 6073579; -.
DR KEGG; lbc:LACBIDRAFT_189088; -.
DR HOGENOM; CLU_016218_1_3_1; -.
DR InParanoid; B0D0U4; -.
DR OrthoDB; 1410886at2759; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000001194; 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..382
FT /note="Methylthioribose-1-phosphate isomerase"
FT /id="PRO_0000402030"
FT ACT_SITE 258
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
FT SITE 178
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
SQ SEQUENCE 382 AA; 40799 MW; 1A7D8769FE4E1C60 CRC64;
MALISIRTSD DKIEIINQLL LPHVTEFVQI DTIEQAHDAI KTMKIRGAPA IASLAALSFS
QYLSRALQAS PLPEYFASPE ALKNNLEPVL AYLFTARPTA VNLGAATRRL TTTLNQSIAQ
GKTTRSIAQD LIDEGKAIAD EDVGRNKAMS KWGGDWLFDR VKAGGGSAEK GLNVLTVCNT
GSLATSGYGT ALGLITYLHE TGKLEKAYYT QTAPYHQGSR LTALELKTLN IPSVMICDTM
VGSLFQHFNI HAVVVGADRI AKNGDTANKI GTYNAAVIAA RHNIPFIVVA PISTVDLAVE
SGLDIPIEQR PPIEACLVRG ILYPNDGNSK QAQVMITPSG LDGIYNPSFD VTPAGLITAI
VTEKGVAVKG EGENIFDLTP VV
