Annotations: 3K21

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Trypsin	e3k21A1	A: a/b three-layered sandwiches	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: Trypsin	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF13499	EF-hand domain pair (EF-hand_7)	EF-hand domain pair		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Calcium-dependent protein kinase 3	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 cation binding calcium ion binding metal ion binding protein serine/threonine kinase activity catalytic activity, acting on a protein kinase activity protein kinase activity calcium/calmodulin-dependent protein kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups calcium-dependent protein serine/threonine kinase activity protein binding calmodulin binding protein serine kinase activity	developmental process cellular developmental process cell differentiation cellular process protein phosphorylation phosphorylation primary metabolic process macromolecule modification phosphate-containing compound metabolic process metabolic process protein metabolic process macromolecule metabolic process protein modification process phosphorus metabolic process developmental process cellular developmental process cell differentiation cellular process protein phosphorylation phosphorylation primary metabolic process macromolecule modification phosphate-containing compound metabolic process metabolic process protein metabolic process macromolecule metabolic process protein modification process phosphorus metabolic process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation signal transduction intracellular signal transduction cell communication	cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR017441	Protein kinase, ATP binding site	Binding Site
A	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A	IPR000719	Protein kinase domain	Domain
A	IPR002048	EF-hand domain	Domain
A	IPR011992	EF-hand domain pair	Homologous Superfamily
A	IPR050205	Calcium-dependent Serine/Threonine Protein Kinases	Family
A	IPR008271	Serine/threonine-protein kinase, active site	Active Site

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.