Annotations: 1KNX

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1knxa2	Alpha and beta proteins (a/b)	PEP carboxykinase-like	PEP carboxykinase-like	HPr kinase HprK C-terminal domain	HPr kinase HprK C-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
A	d1knxa1	Alpha and beta proteins (a/b)	MurF and HprK N-domain-like	HprK N-terminal domain-like	HPr kinase/phoshatase HprK N-terminal domain	HPr kinase/phoshatase HprK N-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
B	d1knxb2	Alpha and beta proteins (a/b)	PEP carboxykinase-like	PEP carboxykinase-like	HPr kinase HprK C-terminal domain	HPr kinase HprK C-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
B	d1knxb1	Alpha and beta proteins (a/b)	MurF and HprK N-domain-like	HprK N-terminal domain-like	HPr kinase/phoshatase HprK N-terminal domain	HPr kinase/phoshatase HprK N-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
C	d1knxc2	Alpha and beta proteins (a/b)	PEP carboxykinase-like	PEP carboxykinase-like	HPr kinase HprK C-terminal domain	HPr kinase HprK C-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
C	d1knxc1	Alpha and beta proteins (a/b)	MurF and HprK N-domain-like	HprK N-terminal domain-like	HPr kinase/phoshatase HprK N-terminal domain	HPr kinase/phoshatase HprK N-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
D	d1knxd2	Alpha and beta proteins (a/b)	PEP carboxykinase-like	PEP carboxykinase-like	HPr kinase HprK C-terminal domain	HPr kinase HprK C-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
D	d1knxd1	Alpha and beta proteins (a/b)	MurF and HprK N-domain-like	HprK N-terminal domain-like	HPr kinase/phoshatase HprK N-terminal domain	HPr kinase/phoshatase HprK N-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
E	d1knxe2	Alpha and beta proteins (a/b)	PEP carboxykinase-like	PEP carboxykinase-like	HPr kinase HprK C-terminal domain	HPr kinase HprK C-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
E	d1knxe1	Alpha and beta proteins (a/b)	MurF and HprK N-domain-like	HprK N-terminal domain-like	HPr kinase/phoshatase HprK N-terminal domain	HPr kinase/phoshatase HprK N-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
F	d1knxf2	Alpha and beta proteins (a/b)	PEP carboxykinase-like	PEP carboxykinase-like	HPr kinase HprK C-terminal domain	HPr kinase HprK C-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)
F	d1knxf1	Alpha and beta proteins (a/b)	MurF and HprK N-domain-like	HprK N-terminal domain-like	HPr kinase/phoshatase HprK N-terminal domain	HPr kinase/phoshatase HprK N-terminal domain	(Mycoplasmoides pneumoniae ) [TaxId: 2104 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	HprK C-terminal domain-like	8089734	4003457	SCOP2 (2022-06-29)
A	SCOP2 Family	HprK N-terminal domain-like	8089732	4002274	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	PEPCK/HprK-like	8089735	3001670	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	HprK N-terminal domain-like	8089733	3001032	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	HprK N-terminal domain-like	8089733	3001032	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	PEPCK/HprK-like	8089735	3001670	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	PEPCK/HprK-like	8089735	3001670	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	HprK N-terminal domain-like	8089733	3001032	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	PEPCK/HprK-like	8089735	3001670	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	HprK N-terminal domain-like	8089733	3001032	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	PEPCK/HprK-like	8089735	3001670	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	HprK N-terminal domain-like	8089733	3001032	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	PEPCK/HprK-like	8089735	3001670	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	HprK N-terminal domain-like	8089733	3001032	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Hpr_kinase_C	e1knxA1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: PEP carboxykinase catalytic C-terminal domain	F: Hpr_kinase_C	ECOD (1.6)
A	Hpr_kinase_N	e1knxA2	A: a/b three-layered sandwiches	X: MurF and HprK N-domain-like (From Topology)	H: MurF and HprK N-domain-like (From Topology)	T: MurF and HprK N-domain-like	F: Hpr_kinase_N	ECOD (1.6)
B	Hpr_kinase_C	e1knxB1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: PEP carboxykinase catalytic C-terminal domain	F: Hpr_kinase_C	ECOD (1.6)
B	Hpr_kinase_N	e1knxB2	A: a/b three-layered sandwiches	X: MurF and HprK N-domain-like (From Topology)	H: MurF and HprK N-domain-like (From Topology)	T: MurF and HprK N-domain-like	F: Hpr_kinase_N	ECOD (1.6)
C	Hpr_kinase_C	e1knxC1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: PEP carboxykinase catalytic C-terminal domain	F: Hpr_kinase_C	ECOD (1.6)
C	Hpr_kinase_N	e1knxC2	A: a/b three-layered sandwiches	X: MurF and HprK N-domain-like (From Topology)	H: MurF and HprK N-domain-like (From Topology)	T: MurF and HprK N-domain-like	F: Hpr_kinase_N	ECOD (1.6)
D	Hpr_kinase_C	e1knxD1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: PEP carboxykinase catalytic C-terminal domain	F: Hpr_kinase_C	ECOD (1.6)
D	Hpr_kinase_N	e1knxD2	A: a/b three-layered sandwiches	X: MurF and HprK N-domain-like (From Topology)	H: MurF and HprK N-domain-like (From Topology)	T: MurF and HprK N-domain-like	F: Hpr_kinase_N	ECOD (1.6)
E	Hpr_kinase_C	e1knxE1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: PEP carboxykinase catalytic C-terminal domain	F: Hpr_kinase_C	ECOD (1.6)
E	Hpr_kinase_N	e1knxE2	A: a/b three-layered sandwiches	X: MurF and HprK N-domain-like (From Topology)	H: MurF and HprK N-domain-like (From Topology)	T: MurF and HprK N-domain-like	F: Hpr_kinase_N	ECOD (1.6)
F	Hpr_kinase_C	e1knxF1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: PEP carboxykinase catalytic C-terminal domain	F: Hpr_kinase_C	ECOD (1.6)
F	Hpr_kinase_N	e1knxF2	A: a/b three-layered sandwiches	X: MurF and HprK N-domain-like (From Topology)	H: MurF and HprK N-domain-like (From Topology)	T: MurF and HprK N-domain-like	F: Hpr_kinase_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.1390.20	Alpha Beta	3-Layer(aba) Sandwich	Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase	Chain: A, domain 1	CATH (4.3.0)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
B	3.40.1390.20	Alpha Beta	3-Layer(aba) Sandwich	Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase	Chain: A, domain 1	CATH (4.3.0)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
C	3.40.1390.20	Alpha Beta	3-Layer(aba) Sandwich	Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase	Chain: A, domain 1	CATH (4.3.0)
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
D	3.40.1390.20	Alpha Beta	3-Layer(aba) Sandwich	Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase	Chain: A, domain 1	CATH (4.3.0)
D	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
E	3.40.1390.20	Alpha Beta	3-Layer(aba) Sandwich	Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase	Chain: A, domain 1	CATH (4.3.0)
E	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
F	3.40.1390.20	Alpha Beta	3-Layer(aba) Sandwich	Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase	Chain: A, domain 1	CATH (4.3.0)
F	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF02603	HPr Serine kinase N terminus (Hpr_kinase_N)	HPr Serine kinase N terminus	-	Family
A, B, C, D, E A, B, C, D, E, F	PF07475	HPr Serine kinase C-terminal domain (Hpr_kinase_C)	HPr Serine kinase C-terminal domain	This family represents the C terminal kinase domain of Hpr Serine/threonine kinase PtsK. This kinase is the sensor in a multicomponent phosphorelay system in control of carbon catabolic repression in bacteria [1]. This kinase in unusual in that i ...	This family represents the C terminal kinase domain of Hpr Serine/threonine kinase PtsK. This kinase is the sensor in a multicomponent phosphorelay system in control of carbon catabolic repression in bacteria [1]. This kinase in unusual in that it recognises the tertiary structure of its target and is a member of a novel family unrelated to any previously described protein phosphorylating enzymes [1]. X-ray analysis of the full-length crystalline enzyme from Staphylococcus xylosus at a resolution of 1.95 A shows the enzyme to consist of two clearly separated domains that are assembled in a hexameric structure resembling a three-bladed propeller [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	Probable HPr(Ser) kinase/phosphatase	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding anion binding cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding catalytic activity, acting on a protein small molecule sensor activity kinase activity protein kinase activity transferase activity phosphotransferase activity, nitrogenous group as acceptor phosphotransferase activity, alcohol group as acceptor protein histidine kinase activity transferase activity, transferring phosphorus-containing groups phosphorelay sensor kinase activity catalytic activity protein serine/threonine/tyrosine kinase activity protein serine/threonine kinase activity	carbohydrate metabolic process regulation of biological process organic substance metabolic process biological regulation primary metabolic process metabolic process regulation of carbohydrate metabolic process regulation of metabolic process regulation of primary metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR003755	HPr(Ser) kinase/phosphorylase	Family
A, B, C, D, E A, B, C, D, E, F	IPR011104	HPr kinase/phosphorylase, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F	IPR028979	HPr(Ser) kinase/phosphorylase-like, N-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR011126	HPr(Ser) kinase/phosphorylase, N-terminal	Domain
A, B, C, D, E A, B, C, D, E, F	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.