ID D8TSQ7_VOLCA Unreviewed; 401 AA.
AC D8TSQ7;
DT 05-OCT-2010, integrated into UniProtKB/TrEMBL.
DT 05-OCT-2010, sequence version 1.
DT 24-JAN-2024, entry version 58.
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=eif2C {ECO:0000313|EMBL:EFJ49530.1};
GN ORFNames=VOLCADRAFT_59470 {ECO:0000313|EMBL:EFJ49530.1};
OS Volvox carteri f. nagariensis.
OC Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC CS clade; Chlamydomonadales; Volvocaceae; Volvox.
OX NCBI_TaxID=3068 {ECO:0000313|Proteomes:UP000001058};
RN [1] {ECO:0000313|EMBL:EFJ49530.1, ECO:0000313|Proteomes:UP000001058}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=f. Nagariensis / Eve {ECO:0000313|Proteomes:UP000001058};
RX PubMed=20616280; DOI=10.1126/science.1188800;
RA Prochnik S.E., Umen J., Nedelcu A.M., Hallmann A., Miller S.M., Nishii I.,
RA Ferris P., Kuo A., Mitros T., Fritz-Laylin L.K., Hellsten U., Chapman J.,
RA Simakov O., Rensing S.A., Terry A., Pangilinan J., Kapitonov V., Jurka J.,
RA Salamov A., Shapiro H., Schmutz J., Grimwood J., Lindquist E., Lucas S.,
RA Grigoriev I.V., Schmitt R., Kirk D., Rokhsar D.S.;
RT "Genomic analysis of organismal complexity in the multicellular green alga
RT Volvox carteri.";
RL Science 329:223-226(2010).
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; GL378335; EFJ49530.1; -; Genomic_DNA.
DR RefSeq; XP_002949511.1; XM_002949465.1.
DR AlphaFoldDB; D8TSQ7; -.
DR STRING; 3068.D8TSQ7; -.
DR GeneID; 9618682; -.
DR KEGG; vcn:VOLCADRAFT_59470; -.
DR eggNOG; KOG1468; Eukaryota.
DR InParanoid; D8TSQ7; -.
DR OrthoDB; 4853at2759; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000001058; 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:0003743; F:translation initiation factor activity; IEA:UniProtKB-KW.
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 Initiation factor {ECO:0000313|EMBL:EFJ49530.1};
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 Protein biosynthesis {ECO:0000313|EMBL:EFJ49530.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000001058}.
FT ACT_SITE 263
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
FT SITE 183
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03119"
SQ SEQUENCE 401 AA; 41952 MW; D2076F530260C09E CRC64;
MAPEGSPSSL QAIRYTRGSL QLLDQRLLPF QTAYLDVPDV KAAWTQIRDM VVRGAPAIGC
TGALAMAVEL QTHKGAGTEF SSVKEATDYI NSTLDYLVTS RPTAVNLADA ANKLKAAAAL
AAAADAATPS SVCSAVMDAA EAYFVEDIAS NKAMGATGAA ALLAAAHARG RGVGGKLRVL
THCNTGSLAT AGYGTALGVI RALHEQGTLE HAFCTETRPY NQGARLTAFE LAHDQLPATL
ICDSAAAALM ASGQVDAVVV GADRVVANGD TANKIGTKSL SISAAHFNIP FFIAAPTTTL
DPHLPSGDHI VIEQRTHEEV THFRGIRVAA EGVNVWNPSF DVAPCGLIEG IITERGMIPK
TKDGVFQVSS RERGKGGGRE DGLLNSLWDE NTEREYGTRV G
//
