5X0B | pdb_00005x0b

Free serine kinase in complex with AMP

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d5x0ba_	Alpha and beta proteins (a+b)	ParB/Sulfiredoxin	ParB/Sulfiredoxin	Hypothetical protein PF0380	automated matches	(Thermococcus kodakarensis KOD1 ) [TaxId: 69014 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	ParB/Sulfiredoxin	8087495	3001301	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	ParBc	e5x0bA2	A: a+b complex topology	X: ParB/Sulfiredoxin (From Topology)	H: ParB/Sulfiredoxin (From Topology)	T: ParB/Sulfiredoxin	F: ParBc	ECOD (1.6)
A	EUF08648	e5x0bA1	A: a/b three-layered sandwiches	X: Insert domain in hypothetical protein PF0380 (From Topology)	H: Insert domain in hypothetical protein PF0380 (From Topology)	T: Insert domain in hypothetical protein PF0380	F: EUF08648	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.1530.10	Alpha Beta	Alpha-Beta Complex	Conserved hypothetical protein from pyrococcus furiosus pfu- 392566-001, ParB domain	Conserved hypothetical protein from pyrococcus furiosus pfu- 392566-001, ParB domain	CATH (4.3.0)
A	3.30.1760.10	Alpha Beta	2-Layer Sandwich	Conserved hypothetical protein from pyrococcus furiosus pfu- 392566-001, domain 2	Conserved hypothetical protein from pyrococcus furiosus pfu- 392566-001, domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18231	L-serine kinase SerK, C-terminal domain (SerK_C)	L-serine kinase SerK, C-terminal domain	This domain is found in the C-terminal region of free serine kinase (SerK) in the hyperthermophilic archaeon Thermococcus kodakarensis. SerK converts ADP and l-serine (Ser) into AMP and O-phospho-l-serine (Sep), which is a precursor of l-cysteine. Th ...	This domain is found in the C-terminal region of free serine kinase (SerK) in the hyperthermophilic archaeon Thermococcus kodakarensis. SerK converts ADP and l-serine (Ser) into AMP and O-phospho-l-serine (Sep), which is a precursor of l-cysteine. The domain is not conserved in the ParB/Srx family. The differences between SerK and the other members of the ParB/Srx family is concentrated in the C-terminal region, which may include residues involved in the Sep binding [1]. Members of this group are mainly found in archaea.	Domain
A	PF02195	ParB N-terminal domain (ParB_N)	ParB N-terminal domain	This entry describes the N-terminal domain of ParB proteins, predominantly found in bacteria. This domain is characterised by a highly conserved arginine motif, RRXR, known as the arginine patch, which is crucial for ParB DNA binding activity [1-2]. ...	This entry describes the N-terminal domain of ParB proteins, predominantly found in bacteria. This domain is characterised by a highly conserved arginine motif, RRXR, known as the arginine patch, which is crucial for ParB DNA binding activity [1-2]. ParB plays a vital role in chromosome partitioning and nucleoid occlusion. These proteins are essential for ensuring proper chromosome segregation during cell division by binding to the DNA origin of replication and localising to both poles of the predivisional cell following DNA replication. ParB comprises three highly conserved domains: an N-terminal nucleotide-binding domain (NBD), a central helix-turn-helix (HTH) parS-binding domain, a non-structured linker region, and a C-terminal dimerisation domain that tightly links the two subunits of the ParB dimer [3]. ParB proteins share significant sequence and structural similarity with Sulfiredoxin (Srx), a sulfinic acid reductase identified in eukaryotes. Sequence comparison and phylogenetic analysis of the Srx and ParB protein families suggest that Srx evolved via truncation of ParB, resulting in the removal of the entire C-terminal half of the protein including the HTH domain [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Free serine kinase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding kinase activity transferase activity catalytic activity transferase activity, transferring phosphorus-containing groups cation binding metal ion binding	serine family amino acid metabolic process oxoacid metabolic process sulfur amino acid metabolic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process cysteine biosynthetic process small molecule metabolic process sulfur compound metabolic process small molecule biosynthetic process carboxylic acid metabolic process primary metabolic process serine family amino acid metabolic process oxoacid metabolic process sulfur amino acid metabolic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process cysteine biosynthetic process small molecule metabolic process sulfur compound metabolic process small molecule biosynthetic process carboxylic acid metabolic process primary metabolic process cysteine metabolic process amino acid biosynthetic process sulfur compound biosynthetic process biosynthetic process metabolic process cellular process serine family amino acid biosynthetic process sulfur amino acid biosynthetic process alpha-amino acid biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR040867	L-serine kinase SerK, C-terminal domain	Domain
A	IPR023098	L-serine kinase SerK/SbnI, C-terminal	Homologous Superfamily
A	IPR036086	ParB/Sulfiredoxin superfamily	Homologous Superfamily
A	IPR003115	ParB-like, N-terminal domain	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.