Annotations: 3I6U

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	SMAD/FHA domain-like	8039241	3000137	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Protein kinase-like (PK-like)	8062376	3000066	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	SMAD/FHA domain-like	8039241	3000137	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Protein kinase-like (PK-like)	8062376	3000066	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	FHA	e3i6uA2	A: beta sandwiches	X: SMAD/FHA domain (From Topology)	H: SMAD/FHA domain (From Topology)	T: SMAD/FHA domain	F: FHA	ECOD (1.6)
A	Pkinase_Tyr	e3i6uA1	A: a+b complex topology	X: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)	H: Protein kinase/SAICAR synthase/ATP-grasp	T: Protein kinase	F: Pkinase_Tyr	ECOD (1.6)
B	FHA	e3i6uB2	A: beta sandwiches	X: SMAD/FHA domain (From Topology)	H: SMAD/FHA domain (From Topology)	T: SMAD/FHA domain	F: FHA	ECOD (1.6)
B	Pkinase_Tyr	e3i6uB1	A: a+b complex topology	X: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)	H: Protein kinase/SAICAR synthase/ATP-grasp	T: Protein kinase	F: Pkinase_Tyr	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.200.20	Mainly Beta	Sandwich	Tumour Suppressor Smad4		CATH (4.3.0)
A	3.30.200.20	Alpha Beta	2-Layer Sandwich	Phosphorylase Kinase	domain 1	CATH (4.3.0)
A	1.10.510.10	Mainly Alpha	Orthogonal Bundle	Transferase(Phosphotransferase)	domain 1	CATH (4.3.0)
B	2.60.200.20	Mainly Beta	Sandwich	Tumour Suppressor Smad4		CATH (4.3.0)
B	3.30.200.20	Alpha Beta	2-Layer Sandwich	Phosphorylase Kinase	domain 1	CATH (4.3.0)
B	1.10.510.10	Mainly Alpha	Orthogonal Bundle	Transferase(Phosphotransferase)	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00498	FHA domain (FHA)	FHA domain	-	Family
A, B	PF00069	Protein kinase domain (Pkinase)	Protein kinase domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Serine/threonine-protein kinase Chk2	catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity protein serine kinase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity protein serine kinase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding identical protein binding protein binding protein homodimerization activity protein dimerization activity kinase binding enzyme binding protein kinase binding protein serine/threonine kinase activity ubiquitin protein ligase binding ubiquitin-like protein ligase binding cation binding metal ion binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process regulation of protein stability biological regulation regulation of biological quality protein stabilization regulation of biological process regulation of cellular process signaling intracellular signal transduction cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process regulation of protein stability biological regulation regulation of biological quality protein stabilization regulation of biological process regulation of cellular process signaling intracellular signal transduction cell communication signal transduction in response to DNA damage signal transduction organonitrogen compound catabolic process organonitrogen compound metabolic process catabolic process regulation of protein metabolic process primary metabolic process regulation of macromolecule metabolic process protein catabolic process regulation of catabolic process macromolecule catabolic process regulation of primary metabolic process organic substance metabolic process metabolic process protein metabolic process macromolecule metabolic process regulation of metabolic process organic substance catabolic process regulation of protein catabolic process cell division cellular response to ionizing radiation cellular response to radiation cellular response to environmental stimulus response to ionizing radiation cellular response to gamma radiation response to radiation response to abiotic stimulus cellular response to abiotic stimulus response to gamma radiation replicative senescence cellular metabolic process protein phosphorylation protein autophosphorylation phosphorylation macromolecule modification phosphate-containing compound metabolic process protein modification process phosphorus metabolic process cell death apoptotic signaling pathway intrinsic apoptotic signaling pathway in response to DNA damage apoptotic process intrinsic apoptotic signaling pathway programmed cell death cellular biosynthetic process RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of cellular metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of cell cycle phase transition negative regulation of biological process negative regulation of cell cycle cell cycle G1/S phase transition negative regulation of mitotic cell cycle mitotic DNA integrity checkpoint signaling mitotic DNA damage checkpoint signaling negative regulation of cell cycle phase transition cell cycle negative regulation of G1/S transition of mitotic cell cycle mitotic G1/S transition checkpoint signaling regulation of cell cycle process DNA integrity checkpoint signaling regulation of mitotic cell cycle phase transition mitotic cell cycle process regulation of G1/S transition of mitotic cell cycle G1/S transition of mitotic cell cycle DNA damage checkpoint signaling cell cycle phase transition regulation of cell cycle G1/S phase transition DNA damage response, signal transduction by p53 class mediator mitotic cell cycle regulation of mitotic cell cycle negative regulation of cellular process regulation of cell cycle cell cycle process negative regulation of mitotic cell cycle phase transition negative regulation of cell cycle G1/S phase transition signal transduction by p53 class mediator negative regulation of cell cycle process cell cycle checkpoint signaling mitotic cell cycle checkpoint signaling mitotic G1 DNA damage checkpoint signaling DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest mitotic cell cycle phase transition positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of macromolecule metabolic process positive regulation of nucleobase-containing compound metabolic process positive regulation of RNA metabolic process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of cellular metabolic process positive regulation of biosynthetic process positive regulation of cellular process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process non-membrane-bounded organelle assembly microtubule cytoskeleton organization cellular component organization cellular component biogenesis cellular component assembly mitotic sister chromatid segregation cellular component organization or biogenesis chromosome segregation microtubule cytoskeleton organization involved in mitosis spindle organization mitotic nuclear division organelle assembly organelle fission chromosome organization sister chromatid segregation spindle assembly mitotic spindle organization mitotic spindle assembly organelle organization nuclear division nuclear chromosome segregation microtubule-based process cytoskeleton organization intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator intrinsic apoptotic signaling pathway by p53 class mediator regulation of signaling regulation of signal transduction regulation of intracellular signal transduction regulation of response to stimulus regulation of signal transduction by p53 class mediator regulation of cell communication double-strand break repair DNA metabolic process DNA repair mitotic intra-S DNA damage checkpoint signaling lymphocyte apoptotic process thymocyte apoptotic process leukocyte apoptotic process T cell apoptotic process cell cycle G2/M phase transition G2/M transition of mitotic cell cycle DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator DNA damage response, signal transduction resulting in transcription	intracellular anatomical structure cytoplasm cellular anatomical entity membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen Golgi apparatus intracellular anatomical structure cytoplasm cellular anatomical entity membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen Golgi apparatus endomembrane system nuclear body PML body

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000719	Protein kinase domain	Domain
A, B	IPR008984	SMAD/FHA domain superfamily	Homologous Superfamily
A, B	IPR000253	Forkhead-associated (FHA) domain	Domain
A, B	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A, B	IPR008271	Serine/threonine-protein kinase, active site	Active Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: O96017	prostate cancer Li-Fraumeni syndrome Li-Fraumeni syndrome 2 osteosarcoma neuroblastoma breast cancer male breast carcinoma squamous cell neoplasm cancer breast carcinoma squamous cell carcinoma hereditary breast ovarian cancer syndrome colorectal cancer familial prostate carcinoma bone osteosarcoma prostate cancer Li-Fraumeni syndrome Li-Fraumeni syndrome 2 osteosarcoma neuroblastoma breast cancer male breast carcinoma squamous cell neoplasm cancer breast carcinoma squamous cell carcinoma hereditary breast ovarian cancer syndrome colorectal cancer familial prostate carcinoma bone osteosarcoma gastric cancer Gastrointestinal Neoplasms hereditary breast carcinoma non-Hodgkin lymphoma attention deficit hyperactivity disorder, inattentive type lung benign neoplasm ovarian disease breast adenocarcinoma primitive neuroectodermal tumor carcinoma of esophagus lymphosarcoma renal cell carcinoma malignant glioma gastric carcinoma gastrointestinal stromal tumor medulloblastoma large cell medulloblastoma non-small cell lung carcinoma ovarian cancer atypical teratoid rhabdoid tumor lung cancer ovarian neoplasm prostate adenocarcinoma breast disease prostate carcinoma malignant mesothelioma gastric neoplasm glioblastoma hereditary diffuse gastric adenocarcinoma non-alcoholic fatty liver disease open-angle glaucoma lung adenocarcinoma ovarian carcinoma lung carcinoma colorectal carcinoma malignant colon neoplasm reticulum cell sarcoma tuberculosis

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.