ID A0A087XEN8_POEFO Unreviewed; 353 AA.
AC A0A087XEN8;
DT 29-OCT-2014, integrated into UniProtKB/TrEMBL.
DT 26-NOV-2014, sequence version 2.
DT 27-MAR-2024, entry version 38.
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};
OS Poecilia formosa (Amazon molly) (Limia formosa).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC Ovalentaria; Atherinomorphae; Cyprinodontiformes; Poeciliidae; Poeciliinae;
OC Poecilia.
OX NCBI_TaxID=48698 {ECO:0000313|Ensembl:ENSPFOP00000004241.2, ECO:0000313|Proteomes:UP000028760};
RN [1] {ECO:0000313|Proteomes:UP000028760}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=female {ECO:0000313|Proteomes:UP000028760};
RA Schartl M., Warren W.;
RL Submitted (OCT-2013) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|Ensembl:ENSPFOP00000004241.2}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (SEP-2023) to UniProtKB.
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; AYCK01013409; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR RefSeq; XP_007570269.1; XM_007570207.2.
DR AlphaFoldDB; A0A087XEN8; -.
DR STRING; 48698.ENSPFOP00000004241; -.
DR Ensembl; ENSPFOT00000004249.1; ENSPFOP00000004241.2; ENSPFOG00000004311.1.
DR GeneID; 103150535; -.
DR KEGG; pfor:103150535; -.
DR CTD; 84245; -.
DR eggNOG; KOG1468; Eukaryota.
DR GeneTree; ENSGT00390000013732; -.
DR OMA; TDNMAGY; -.
DR OrthoDB; 4853at2759; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000028760; 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:UP000028760}.
FT ACT_SITE 241
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
FT SITE 161
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
SQ SEQUENCE 353 AA; 37865 MW; F60F79012755656D CRC64;
MTLEAIRYRS GSLQILNQLL LPHQTVYEDI RSVQGAYEAI KSMKVRGAPA IAIVGCLSLA
VELRAGAGGD DPVTFIRESL CHLTSARPTA VNMGRAAREL MEFAENESME KNSEQLRDSV
ISWIEDMLER DVNDNRKIGN YGAQHILSGV PRDSVTVLTH CNTGSLATAG YGTALGVVRS
LHGLGRLKRV YCTETRPYNQ GSRLTAYEAV AEGIPATLIT DSMAALTMRE MDITAVVVGA
DRVVANGDTA NKVGTYQLAI AAKHHGIPFY VAAPSTSCDL SLESGRDIII EVRPPEELTS
INGVPIAAPG IEVWNPAFDV TPHQLITGGI ITELGVFLPS ELQAALTGRL TAL
//
