HPRK_VARPS
ID HPRK_VARPS Reviewed; 319 AA.
AC C5CJ68;
DT 22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT 28-JUL-2009, sequence version 1.
DT 03-AUG-2022, entry version 68.
DE RecName: Full=HPr kinase/phosphorylase {ECO:0000255|HAMAP-Rule:MF_01249};
DE Short=HPrK/P {ECO:0000255|HAMAP-Rule:MF_01249};
DE EC=2.7.11.- {ECO:0000255|HAMAP-Rule:MF_01249};
DE EC=2.7.4.- {ECO:0000255|HAMAP-Rule:MF_01249};
DE AltName: Full=HPr(Ser) kinase/phosphorylase {ECO:0000255|HAMAP-Rule:MF_01249};
GN Name=hprK {ECO:0000255|HAMAP-Rule:MF_01249}; OrderedLocusNames=Vapar_0405;
OS Variovorax paradoxus (strain S110).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Comamonadaceae; Variovorax.
OX NCBI_TaxID=543728;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=S110;
RX PubMed=21183664; DOI=10.1128/jb.00925-10;
RA Han J.I., Choi H.K., Lee S.W., Orwin P.M., Kim J., Laroe S.L., Kim T.G.,
RA O'Neil J., Leadbetter J.R., Lee S.Y., Hur C.G., Spain J.C.,
RA Ovchinnikova G., Goodwin L., Han C.;
RT "Complete genome sequence of the metabolically versatile plant growth-
RT promoting endophyte, Variovorax paradoxus S110.";
RL J. Bacteriol. 193:1183-1190(2011).
CC -!- FUNCTION: Catalyzes the ATP- as well as the pyrophosphate-dependent
CC phosphorylation of a specific serine residue in HPr, a phosphocarrier
CC protein of the phosphoenolpyruvate-dependent sugar phosphotransferase
CC system (PTS). HprK/P also catalyzes the pyrophosphate-producing,
CC inorganic phosphate-dependent dephosphorylation (phosphorolysis) of
CC seryl-phosphorylated HPr (P-Ser-HPr). {ECO:0000255|HAMAP-
CC Rule:MF_01249}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[HPr protein]-L-serine + ATP = [HPr protein]-O-phospho-L-
CC serine + ADP + H(+); Xref=Rhea:RHEA:46600, Rhea:RHEA-COMP:11602,
CC Rhea:RHEA-COMP:11603, ChEBI:CHEBI:15378, ChEBI:CHEBI:29999,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:83421, ChEBI:CHEBI:456216;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01249};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[HPr protein]-O-phospho-L-serine + H(+) + phosphate = [HPr
CC protein]-L-serine + diphosphate; Xref=Rhea:RHEA:46604, Rhea:RHEA-
CC COMP:11602, Rhea:RHEA-COMP:11603, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29999, ChEBI:CHEBI:33019, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:83421; Evidence={ECO:0000255|HAMAP-Rule:MF_01249};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01249};
CC -!- SUBUNIT: Homohexamer. {ECO:0000255|HAMAP-Rule:MF_01249}.
CC -!- DOMAIN: The Walker A ATP-binding motif also binds Pi and PPi.
CC {ECO:0000255|HAMAP-Rule:MF_01249}.
CC -!- MISCELLANEOUS: Both phosphorylation and phosphorolysis are carried out
CC by the same active site and suggest a common mechanism for both
CC reactions. {ECO:0000255|HAMAP-Rule:MF_01249}.
CC -!- SIMILARITY: Belongs to the HPrK/P family. {ECO:0000255|HAMAP-
CC Rule:MF_01249}.
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DR EMBL; CP001635; ACS17068.1; -; Genomic_DNA.
DR RefSeq; WP_012745568.1; NC_012791.1.
DR AlphaFoldDB; C5CJ68; -.
DR SMR; C5CJ68; -.
DR STRING; 543728.Vapar_0405; -.
DR EnsemblBacteria; ACS17068; ACS17068; Vapar_0405.
DR GeneID; 45054735; -.
DR KEGG; vap:Vapar_0405; -.
DR eggNOG; COG1493; Bacteria.
DR HOGENOM; CLU_052030_0_2_4; -.
DR OMA; AMNNRQK; -.
DR OrthoDB; 391150at2; -.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000155; F:phosphorelay sensor kinase activity; IEA:InterPro.
DR GO; GO:0004674; F:protein serine/threonine kinase activity; IEA:UniProtKB-KW.
DR GO; GO:0004712; F:protein serine/threonine/tyrosine kinase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006109; P:regulation of carbohydrate metabolic process; IEA:UniProtKB-UniRule.
DR CDD; cd01918; HprK_C; 1.
DR Gene3D; 3.40.1390.20; -; 1.
DR Gene3D; 3.40.50.300; -; 1.
DR HAMAP; MF_01249; HPr_kinase; 1.
DR InterPro; IPR003755; HPr(Ser)_kin/Pase.
DR InterPro; IPR011104; Hpr_kin/Pase_C.
DR InterPro; IPR011126; Hpr_kin/Pase_Hpr_N.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR028979; Ser_kin/Pase_Hpr-like_N_sf.
DR PANTHER; PTHR30305:SF1; PTHR30305:SF1; 1.
DR Pfam; PF07475; Hpr_kinase_C; 1.
DR Pfam; PF02603; Hpr_kinase_N; 1.
DR SUPFAM; SSF75138; SSF75138; 1.
DR TIGRFAMs; TIGR00679; hpr-ser; 1.
PE 3: Inferred from homology;
KW ATP-binding; Kinase; Magnesium; Metal-binding; Multifunctional enzyme;
KW Nucleotide-binding; Serine/threonine-protein kinase; Transferase.
FT CHAIN 1..319
FT /note="HPr kinase/phosphorylase"
FT /id="PRO_1000214112"
FT REGION 209..218
FT /note="Important for the catalytic mechanism of both
FT phosphorylation and dephosphorylation"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT REGION 273..278
FT /note="Important for the catalytic mechanism of
FT dephosphorylation"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT ACT_SITE 146
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT ACT_SITE 167
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT ACT_SITE 185
FT /note="Proton acceptor; for phosphorylation activity.
FT Proton donor; for dephosphorylation activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT ACT_SITE 252
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT BINDING 161..168
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT BINDING 168
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
FT BINDING 210
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01249"
SQ SEQUENCE 319 AA; 35484 MW; 7F170AD36DC67027 CRC64;
MKPTVISADA MFEEFRGSLR WEWLAGLGAS ERQFDPEVIS RAQSAADLVG YLNYIHPYRV
QILGAREVAY LTRGSQEDCA RRIARIVTLE PPMLVLADGQ AAPDELLSIC ERAQLPLFAT
RESSAFVIDL LRAYLSKHFA ERTSMHGVFM DILGMGVMIT GESGLGKSEL GLELISRGNG
LVADDAVDLF RINQNTIEGR CPDLLLNLLE VRGIGLLDIR AIFGETAVRR KMRLKLIVHL
VRRDSFERDY ERMPSAPLTQ DVLGIPVRKV IIQVVAGRNI AVLVEAAVRN SILQLRGIDT
YADFVARHHK AMESGRDGD
