ID A0A1I8C2Z6_9BILA Unreviewed; 446 AA.
AC A0A1I8C2Z6;
DT 18-JAN-2017, integrated into UniProtKB/TrEMBL.
DT 18-JAN-2017, sequence version 1.
DT 13-SEP-2023, entry version 25.
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};
OS Rhabditophanes sp. KR3021.
OC Eukaryota; Metazoa; Ecdysozoa; Nematoda; Chromadorea; Rhabditida;
OC Tylenchina; Panagrolaimomorpha; Strongyloidoidea; Alloionematidae;
OC Rhabditophanes.
OX NCBI_TaxID=114890 {ECO:0000313|Proteomes:UP000095286, ECO:0000313|WBParaSite:RSKR_0000006900.1};
RN [1] {ECO:0000313|WBParaSite:RSKR_0000006900.1}
RP IDENTIFICATION.
RC STRAIN=KR3021 {ECO:0000313|WBParaSite:RSKR_0000006900.1};
RG WormBaseParasite;
RL Submitted (NOV-2016) 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 AlphaFoldDB; A0A1I8C2Z6; -.
DR WBParaSite; RSKR_0000006900.1; RSKR_0000006900.1; RSKR_0000006900.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000095286; Unplaced.
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}.
FT REGION 1..36
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 9..36
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 338
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
FT SITE 258
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
SQ SEQUENCE 446 AA; 49785 MW; 32DEC6F69C1A93AE CRC64;
MTDIEETNNL DVSDDHKSDD VSIDEGKETD SCPDSELELS NKHVIPTLII SDSANEQQQD
EKESVAIGSV KCFDPSKDYW EESDMENSEC LKSLIYDKDE VSLKILDQLL IPHAISYIKI
NGIEDGFKVI KNMNVRGAPL IATVALLSLA VELESSDHDR LNMEQLVLFV QESCAYLLTS
RPTAINLRNG LREIIMLVDR SVADEEQEVD ELRHRIQLTA FNFYEREWDE NDALLREATT
CVESNREEGH KFTIMTICNT GALATSSLGT ALGVIRKLYE RGHLEMAYAL ETRPYNQGSR
LTAFELIEDS IPFTLITDSM AAWTMKTKKI DAILVGADQI ALNGDTANKI GTYMLSILAA
AHNIPFYVVA PTSSINFDIE NGKSIKIEER PAVEMITFNG LLTAPAKTPV FNPAFDITNA
KFITAILTEK GCFRPNQLKK AVMEDV
//
