PANB_PARP8
ID PANB_PARP8 Reviewed; 271 AA.
AC B2JGD9;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 10-JUN-2008, sequence version 1.
DT 03-AUG-2022, entry version 79.
DE RecName: Full=3-methyl-2-oxobutanoate hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00156};
DE EC=2.1.2.11 {ECO:0000255|HAMAP-Rule:MF_00156};
DE AltName: Full=Ketopantoate hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00156};
DE Short=KPHMT {ECO:0000255|HAMAP-Rule:MF_00156};
GN Name=panB {ECO:0000255|HAMAP-Rule:MF_00156}; OrderedLocusNames=Bphy_2494;
OS Paraburkholderia phymatum (strain DSM 17167 / CIP 108236 / LMG 21445 /
OS STM815) (Burkholderia phymatum).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Paraburkholderia.
OX NCBI_TaxID=391038;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 17167 / CIP 108236 / LMG 21445 / STM815;
RX PubMed=25197461; DOI=10.4056/sigs.4861021;
RA Moulin L., Klonowska A., Caroline B., Booth K., Vriezen J.A., Melkonian R.,
RA James E.K., Young J.P., Bena G., Hauser L., Land M., Kyrpides N., Bruce D.,
RA Chain P., Copeland A., Pitluck S., Woyke T., Lizotte-Waniewski M.,
RA Bristow J., Riley M.;
RT "Complete genome sequence of Burkholderia phymatum STM815(T), a broad host
RT range and efficient nitrogen-fixing symbiont of Mimosa species.";
RL Stand. Genomic Sci. 9:763-774(2014).
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}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP001043; ACC71667.1; -; Genomic_DNA.
DR RefSeq; WP_012401871.1; NZ_CADFGH010000002.1.
DR AlphaFoldDB; B2JGD9; -.
DR SMR; B2JGD9; -.
DR STRING; 391038.Bphy_2494; -.
DR EnsemblBacteria; ACC71667; ACC71667; Bphy_2494.
DR KEGG; bph:Bphy_2494; -.
DR eggNOG; COG0413; Bacteria.
DR HOGENOM; CLU_036645_1_0_4; -.
DR OMA; VLVWTDM; -.
DR OrthoDB; 916845at2; -.
DR UniPathway; UPA00028; UER00003.
DR Proteomes; UP000001192; Chromosome 1.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003864; F:3-methyl-2-oxobutanoate hydroxymethyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0015940; P:pantothenate biosynthetic process; IEA:UniProtKB-UniRule.
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 PIRSF; PIRSF000388; Pantoate_hydroxy_MeTrfase; 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..271
FT /note="3-methyl-2-oxobutanoate hydroxymethyltransferase"
FT /id="PRO_1000096946"
FT ACT_SITE 189
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 53..54
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 53
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 92
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 92
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 120
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
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 271 AA; 28817 MW; 11F8A715ACC4260E CRC64;
MTYLQETSRS AVTVPKLMAM REAGEKIAML TCYDASFAAL LDRAGVDSLL IGDSLGNVLQ
GQSTTLPVTL DEIAYHTACV ARAKPSALIV SDMPFGTYGT PADAYANAVK LMQSGAQMIK
LEGGEWLADT VRFLVERSVP VCAHVGLTPQ SVHAFGGFKV QGKTESGAAQ LLRDSRAMQD
AGAQLLVMEA MPTQLAAEVT KQLRIPTIGI GAGVDCSGQV LVLHDMLGIF PGKRPRFVKD
FMQGQPSILA AVEAYVRAVK DGTFPGPEHT F
