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PANB1_BRADU
ID   PANB1_BRADU             Reviewed;         326 AA.
AC   Q89TZ6;
DT   24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=3-methyl-2-oxobutanoate hydroxymethyltransferase 1 {ECO:0000255|HAMAP-Rule:MF_00156};
DE            EC=2.1.2.11 {ECO:0000255|HAMAP-Rule:MF_00156};
DE   AltName: Full=Ketopantoate hydroxymethyltransferase 1 {ECO:0000255|HAMAP-Rule:MF_00156};
DE            Short=KPHMT 1 {ECO:0000255|HAMAP-Rule:MF_00156};
GN   Name=panB1 {ECO:0000255|HAMAP-Rule:MF_00156}; OrderedLocusNames=blr1626;
OS   Bradyrhizobium diazoefficiens (strain JCM 10833 / BCRC 13528 / IAM 13628 /
OS   NBRC 14792 / USDA 110).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Bradyrhizobium.
OX   NCBI_TaxID=224911;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JCM 10833 / BCRC 13528 / IAM 13628 / NBRC 14792 / USDA 110;
RX   PubMed=12597275; DOI=10.1093/dnares/9.6.189;
RA   Kaneko T., Nakamura Y., Sato S., Minamisawa K., Uchiumi T., Sasamoto S.,
RA   Watanabe A., Idesawa K., Iriguchi M., Kawashima K., Kohara M.,
RA   Matsumoto M., Shimpo S., Tsuruoka H., Wada T., Yamada M., Tabata S.;
RT   "Complete genomic sequence of nitrogen-fixing symbiotic bacterium
RT   Bradyrhizobium japonicum USDA110.";
RL   DNA Res. 9:189-197(2002).
CC   -!- FUNCTION: Catalyzes the reversible reaction in which hydroxymethyl
CC       group from 5,10-methylenetetrahydrofolate is transferred onto alpha-
CC       ketoisovalerate to form ketopantoate. {ECO:0000255|HAMAP-
CC       Rule:MF_00156}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + 3-methyl-2-
CC         oxobutanoate + H2O = (6S)-5,6,7,8-tetrahydrofolate + 2-
CC         dehydropantoate; Xref=Rhea:RHEA:11824, ChEBI:CHEBI:11561,
CC         ChEBI:CHEBI:11851, ChEBI:CHEBI:15377, ChEBI:CHEBI:15636,
CC         ChEBI:CHEBI:57453; EC=2.1.2.11; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00156};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00156};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00156};
CC   -!- PATHWAY: Cofactor biosynthesis; (R)-pantothenate biosynthesis; (R)-
CC       pantoate from 3-methyl-2-oxobutanoate: step 1/2. {ECO:0000255|HAMAP-
CC       Rule:MF_00156}.
CC   -!- SUBUNIT: Homodecamer; pentamer of dimers. {ECO:0000255|HAMAP-
CC       Rule:MF_00156}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00156}.
CC   -!- SIMILARITY: Belongs to the PanB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00156}.
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DR   EMBL; BA000040; BAC46891.1; -; Genomic_DNA.
DR   RefSeq; NP_768266.1; NC_004463.1.
DR   AlphaFoldDB; Q89TZ6; -.
DR   SMR; Q89TZ6; -.
DR   STRING; 224911.27349878; -.
DR   EnsemblBacteria; BAC46891; BAC46891; BAC46891.
DR   KEGG; bja:blr1626; -.
DR   eggNOG; COG0413; Bacteria.
DR   HOGENOM; CLU_036645_1_0_5; -.
DR   InParanoid; Q89TZ6; -.
DR   OMA; ISTMATW; -.
DR   PhylomeDB; Q89TZ6; -.
DR   UniPathway; UPA00028; UER00003.
DR   Proteomes; UP000002526; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0003864; F:3-methyl-2-oxobutanoate hydroxymethyltransferase activity; IBA:GO_Central.
DR   GO; GO:0000287; F:magnesium ion binding; IBA:GO_Central.
DR   GO; GO:0015940; P:pantothenate biosynthetic process; IBA:GO_Central.
DR   CDD; cd06557; KPHMT-like; 1.
DR   Gene3D; 3.20.20.60; -; 1.
DR   HAMAP; MF_00156; PanB; 1.
DR   InterPro; IPR003700; Pantoate_hydroxy_MeTrfase.
DR   InterPro; IPR015813; Pyrv/PenolPyrv_Kinase-like_dom.
DR   InterPro; IPR040442; Pyrv_Kinase-like_dom_sf.
DR   PANTHER; PTHR20881; PTHR20881; 1.
DR   Pfam; PF02548; Pantoate_transf; 1.
DR   SUPFAM; SSF51621; SSF51621; 1.
DR   TIGRFAMs; TIGR00222; panB; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Magnesium; Metal-binding; Pantothenate biosynthesis;
KW   Reference proteome; Transferase.
FT   CHAIN           1..326
FT                   /note="3-methyl-2-oxobutanoate hydroxymethyltransferase 1"
FT                   /id="PRO_0000297225"
FT   ACT_SITE        189
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         52..53
FT                   /ligand="3-methyl-2-oxobutanoate"
FT                   /ligand_id="ChEBI:CHEBI:11851"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         52
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         91
FT                   /ligand="3-methyl-2-oxobutanoate"
FT                   /ligand_id="ChEBI:CHEBI:11851"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         91
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         122
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
SQ   SEQUENCE   326 AA;  35372 MW;  84A5FDD9F8BA1012 CRC64;
     MSRVSEQPVD RITIPLLQRW KQDGRRLVMT TAYDAVAAPI PDPSIDISLV GDSGGNVCLG
     FENTPPVSVA MMNHHLEAAV RSKPRALLVA DMSFLSFHVS VEETIRNAGG FLQRGAAAAR
     LEGGGKRIEM VRAIVDCEIP VMGHLGLVPQ SVNVMGGFKV QGRKVDEALR LLDDAHRLQE
     ASCFALVLEG TPAELTARVS DSLTIPTIGI GSGPDCSEQV LCFMTCWAKP KVIAPNSFPP
     IRKAFSSSMM RFRAGQRMSA VARSPARKSP IGFPKALGRQ LPTGRHPPQI ITSVAELRRT
     LAKSRSANQR AGLCRRWAIS TMATWR
 
 
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