ID A0A1B9J034_9TREE Unreviewed; 392 AA.
AC A0A1B9J034;
DT 02-NOV-2016, integrated into UniProtKB/TrEMBL.
DT 02-NOV-2016, sequence version 1.
DT 13-SEP-2023, entry version 19.
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=MRI1 {ECO:0000256|HAMAP-Rule:MF_03119};
GN ORFNames=L486_00781 {ECO:0000313|EMBL:OCF61137.1};
OS Kwoniella mangroviensis CBS 10435.
OC Eukaryota; Fungi; Dikarya; Basidiomycota; Agaricomycotina; Tremellomycetes;
OC Tremellales; Cryptococcaceae; Kwoniella.
OX NCBI_TaxID=1331196 {ECO:0000313|EMBL:OCF61137.1, ECO:0000313|Proteomes:UP000092583};
RN [1] {ECO:0000313|EMBL:OCF61137.1, ECO:0000313|Proteomes:UP000092583}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CBS 10435 {ECO:0000313|EMBL:OCF61137.1,
RC ECO:0000313|Proteomes:UP000092583};
RG The Broad Institute Genome Sequencing Platform;
RA Cuomo C., Litvintseva A., Chen Y., Heitman J., Sun S., Springer D.,
RA Dromer F., Young S.K., Zeng Q., Gargeya S., Fitzgerald M., Abouelleil A.,
RA Alvarado L., Berlin A.M., Chapman S.B., Dewar J., Goldberg J., Griggs A.,
RA Gujja S., Hansen M., Howarth C., Imamovic A., Larimer J., McCowan C.,
RA Murphy C., Pearson M., Priest M., Roberts A., Saif S., Shea T., Sykes S.,
RA Wortman J., Nusbaum C., Birren B.;
RT "The Genome Sequence of Kwoniella mangroviensis CBS10435.";
RL Submitted (JUL-2013) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|Proteomes:UP000092583}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CBS 10435 {ECO:0000313|Proteomes:UP000092583};
RA Cuomo C., Litvintseva A., Heitman J., Chen Y., Sun S., Springer D.,
RA Dromer F., Young S., Zeng Q., Chapman S., Gujja S., Saif S., Birren B.;
RT "Evolution of pathogenesis and genome organization in the Tremellales.";
RL Submitted (DEC-2013) to the EMBL/GenBank/DDBJ databases.
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; KI669459; OCF61137.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1B9J034; -.
DR STRING; 1331196.A0A1B9J034; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000092583; 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; 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}; Cytoplasm {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:UP000092583}.
FT ACT_SITE 264
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
FT SITE 184
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
SQ SEQUENCE 392 AA; 42776 MW; 2A73DFA2120F6634 CRC64;
MVAQAPSGKK PLPDMMTSIR IDKSGQVEIV DQLLLPHSVV WIPISTPEEA FEAIKSMKIR
GAPAIASLAA LSLKSSLSSA SLTNEFSSTT DAAQWVKEKC DYLQSSRPTA VNLSEAMNRI
RQYLNTTITE KDTKESVIDN VREICQDVHE EDLERNMQMG KLGADWLFAK RGGKKDKLKV
VTVCNTGSLA TSGYGTAIGV ITALYEHDQL DTAYYAQTTP YHQGSRLTSL ELTTLEIPSC
MICDTMLGSL FQHEDIDGVI VGADRVVKNG DTANKIGTYQ AAVLAQRHNI PFMVIAPVTT
IDLSLETGKE IHIEQRPSIE ATQVRGLNTE TGKLSVVRIT PEGVGEGDKP WQRVYNPSFD
VTPAELISCV VTEKGVAERK DGEKSIDVSS IC
//
