PANB_STAMF
ID PANB_STAMF Reviewed; 271 AA.
AC A3DPB2;
DT 24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 20-MAR-2007, sequence version 1.
DT 03-AUG-2022, entry version 82.
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=Smar_1381;
OS Staphylothermus marinus (strain ATCC 43588 / DSM 3639 / JCM 9404 / F1).
OC Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC Desulfurococcaceae; Staphylothermus.
OX NCBI_TaxID=399550;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43588 / DSM 3639 / JCM 9404 / F1;
RX PubMed=19341479; DOI=10.1186/1471-2164-10-145;
RA Anderson I.J., Dharmarajan L., Rodriguez J., Hooper S., Porat I.,
RA Ulrich L.E., Elkins J.G., Mavromatis K., Sun H., Land M., Lapidus A.,
RA Lucas S., Barry K., Huber H., Zhulin I.B., Whitman W.B., Mukhopadhyay B.,
RA Woese C., Bristow J., Kyrpides N.;
RT "The complete genome sequence of Staphylothermus marinus reveals
RT differences in sulfur metabolism among heterotrophic Crenarchaeota.";
RL BMC Genomics 10:145-145(2009).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43588 / DSM 3639 / JCM 9404 / F1;
RX PubMed=21304655; DOI=10.4056/sigs.30527;
RA Anderson I.J., Sun H., Lapidus A., Copeland A., Glavina Del Rio T.,
RA Tice H., Dalin E., Lucas S., Barry K., Land M., Richardson P., Huber H.,
RA Kyrpides N.C.;
RT "Complete genome sequence of Staphylothermus marinus Stetter and Fiala 1986
RT type strain F1.";
RL Stand. Genomic Sci. 1:183-188(2009).
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; coenzyme A biosynthesis.
CC {ECO:0000255|HAMAP-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; CP000575; ABN70472.1; -; Genomic_DNA.
DR RefSeq; WP_011839666.1; NC_009033.1.
DR AlphaFoldDB; A3DPB2; -.
DR SMR; A3DPB2; -.
DR STRING; 399550.Smar_1381; -.
DR EnsemblBacteria; ABN70472; ABN70472; Smar_1381.
DR GeneID; 4907082; -.
DR KEGG; smr:Smar_1381; -.
DR eggNOG; arCOG00584; Archaea.
DR HOGENOM; CLU_036645_1_0_2; -.
DR OMA; VLVWTDM; -.
DR OrthoDB; 60112at2157; -.
DR UniPathway; UPA00241; -.
DR Proteomes; UP000000254; Chromosome.
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:0015937; P:coenzyme A biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0015940; P:pantothenate biosynthetic process; IEA:InterPro.
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 Coenzyme A biosynthesis; Cytoplasm; Magnesium; Metal-binding;
KW Reference proteome; Transferase.
FT CHAIN 1..271
FT /note="3-methyl-2-oxobutanoate hydroxymethyltransferase"
FT /id="PRO_0000297427"
FT ACT_SITE 181
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 44..45
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 44
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 83
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 83
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 112
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 114
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
SQ SEQUENCE 271 AA; 30015 MW; 837A4EB9901048F3 CRC64;
MKKITIRDIL KMKGKKKIVM VTAYDYPFAK LVDEAGVDII LVGDSAGMVV HGLPSTIPVT
MDMMLLHVSS VARAKPRALI VGDMPFLSYE VSIEEAVRNA GLMLKSGAEA VKIEGGSEMV
DVIKALVRAG IPVMGHIGLT PQRYLLLGGY RRRGVKEYEA EKIIEDAKEL EKAGVFSIVI
EFTAADIAEE ITKEVSVPTI CIGSGPYCDG QVLVLHDLLG IYEEIPPFAK KYADLRRIVI
DSVKKYAEEV RNGVFPERKH YFFSKRREAE K
