Annotations: 6L30

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	BRCT domain-like	8092284	3000159	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	UNK_F_TYPE	e6l30A3	A: beta barrels	X: PH domain-like	H: PH domain-like (From Topology)	T: PH domain-like	F: UNK_F_TYPE	ECOD (1.6)
A	RhoGEF	e6l30A2	A: alpha bundles	X: DH domain-like	H: DBL homology domain (DH-domain) (From Topology)	T: DBL homology domain (DH-domain)	F: RhoGEF	ECOD (1.6)
A	PTCB-BRCT	e6l30A1	A: a/b three-layered sandwiches	X: BRCT domain (From Topology)	H: BRCT domain (From Topology)	T: BRCT domain	F: PTCB-BRCT	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21242	ECT2, PH domain (ECT2_PH)	ECT2, PH domain	ECT2 (Epithelial Cell Transforming Sequence 2) is a guanine nucleotide exchange factor (GEF) that catalyses the exchange of GDP for GTP. It is a cell cycle regulator that plays key roles in cytokinesis [1]. ECT2 contains triple copies of the BRCT dom ...	ECT2 (Epithelial Cell Transforming Sequence 2) is a guanine nucleotide exchange factor (GEF) that catalyses the exchange of GDP for GTP. It is a cell cycle regulator that plays key roles in cytokinesis [1]. ECT2 contains triple copies of the BRCT domain (BRCT0, BRCT1 (Pfam:PF12738) and BRCT2 (Pfam:PF00533) at the N-terminal, separated from the C-terminal DH (Pfam:PF00621) and PH domains by a linker of about 100 residues. This entry represents the PH domain [1]. The BRCT and DH-PH domains mediate intra-molecular interactions that restrains ETC2 activity during interphase.	Domain
A	PF12738	twin BRCT domain (PTCB-BRCT)	twin BRCT domain	This is a BRCT domain that appears in duplicate in most member sequences. BRCT domains are peptide- and phosphopeptide-binding modules. BRCT domains are present in a number of proteins involved in DNA checkpoint controls and DNA repair [1,2].	Domain
A	PF00621	RhoGEF domain (RhoGEF)	RhoGEF domain	Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that Pfam:PF00169 domains invariably occur C-terminal to RhoGEF/DH domains.	Domain
A	PF00533	BRCA1 C Terminus (BRCT) domain (BRCT)	BRCA1 C Terminus (BRCT) domain	The BRCT domain is found predominantly in proteins involved in cell cycle checkpoint functions responsive to DNA damage. The BRCT domain of XRCC1 forms a homodimer in the crystal structure. This suggests that pairs of BRCT domains associate as homo- ...	The BRCT domain is found predominantly in proteins involved in cell cycle checkpoint functions responsive to DNA damage. The BRCT domain of XRCC1 forms a homodimer in the crystal structure. This suggests that pairs of BRCT domains associate as homo- or heterodimers. BRCT domains are often found as tandem-repeat pairs [2]. Structures of the BRCA1 BRCT domains revealed a basis for a widely utilised head-to-tail BRCT-BRCT oligomerisation mode [3]. This conserved tandem BRCT architecture facilitates formation of the canonical BRCT phospho-peptide interaction cleft at a groove between the BRCT domains. Disease associated missense and nonsense mutations in the BRCA1 BRCT domains disrupt peptide binding by directly occluding this peptide binding groove, or by disrupting key conserved BRCT core folding determinants [5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Protein ECT2	small GTPase binding protein binding binding enzyme binding GTPase binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity nucleoside-triphosphatase regulator activity molecular function regulator activity identical protein binding protein homodimerization activity small GTPase binding protein binding binding enzyme binding GTPase binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity nucleoside-triphosphatase regulator activity molecular function regulator activity identical protein binding protein homodimerization activity protein dimerization activity guanyl-nucleotide exchange factor activity	regulation of cytokinesis regulation of biological process regulation of cellular process positive regulation of cell division regulation of cell cycle process biological regulation positive regulation of biological process cytokinesis positive regulation of cell cycle regulation of cell division positive regulation of cytokinesis positive regulation of cell cycle process cellular process cell division regulation of cytokinesis regulation of biological process regulation of cellular process positive regulation of cell division regulation of cell cycle process biological regulation positive regulation of biological process cytokinesis positive regulation of cell cycle regulation of cell division positive regulation of cytokinesis positive regulation of cell cycle process cellular process cell division cell cycle regulation of cell cycle positive regulation of cellular process cell cycle process positive regulation of programmed cell death regulation of apoptotic process regulation of programmed cell death cell death positive regulation of apoptotic process apoptotic process programmed cell death cellular response to stimulus response to ionizing radiation response to stimulus cellular response to ionizing radiation response to radiation response to abiotic stimulus cellular response to radiation cellular response to abiotic stimulus cellular response to environmental stimulus protein localization regulation of localization cellular localization establishment of protein localization nitrogen compound transport regulation of protein localization nucleocytoplasmic transport transport positive regulation of nucleocytoplasmic transport nuclear transport positive regulation of establishment of protein localization regulation of protein localization to nucleus positive regulation of protein transport localization import into nucleus regulation of protein import into nucleus cellular macromolecule localization establishment of localization in cell protein import into nucleus positive regulation of intracellular transport regulation of intracellular transport regulation of transport positive regulation of protein localization to nucleus regulation of establishment of protein localization positive regulation of protein import into nucleus intracellular transport regulation of nucleocytoplasmic transport protein localization to nucleus regulation of protein transport establishment of localization establishment of protein localization to organelle positive regulation of transport regulation of cellular localization protein transport macromolecule localization protein localization to organelle positive regulation of protein localization regulation of intracellular protein transport positive regulation of intracellular protein transport intracellular protein transport regulation of protein modification process positive regulation of phosphorylation regulation of catalytic activity regulation of protein phosphorylation positive regulation of protein metabolic process regulation of transferase activity positive regulation of phosphate metabolic process regulation of primary metabolic process positive regulation of metabolic process positive regulation of molecular function positive regulation of protein modification process regulation of phosphate metabolic process phosphate-containing compound metabolic process positive regulation of macromolecule metabolic process protein metabolic process positive regulation of protein kinase activity phosphorus metabolic process protein modification process positive regulation of protein phosphorylation protein phosphorylation positive regulation of transferase activity positive regulation of phosphorus metabolic process phosphorylation regulation of protein metabolic process positive regulation of catalytic activity primary metabolic process regulation of protein kinase activity regulation of macromolecule metabolic process regulation of molecular function positive regulation of kinase activity regulation of kinase activity activation of protein kinase activity macromolecule modification regulation of phosphorylation regulation of phosphorus metabolic process metabolic process macromolecule metabolic process regulation of metabolic process cellular response to metal ion cellular response to chemical stimulus response to metal ion response to chemical cellular response to calcium ion response to calcium ion bicellular tight junction assembly tight junction organization apical junction assembly cellular component organization cellular component biogenesis cell junction organization cellular component assembly cell junction assembly tight junction assembly cellular component organization or biogenesis cell-cell junction assembly cell-cell junction organization developmental process anatomical structure morphogenesis anatomical structure development cell morphogenesis multicellular organism development multicellular organismal process nervous system development system development establishment of organelle localization attachment of spindle microtubules to kinetochore metaphase chromosome alignment chromosome localization organelle localization nuclear chromosome segregation regulation of attachment of spindle microtubules to kinetochore establishment of chromosome localization chromosome segregation assembly of actomyosin apparatus involved in cytokinesis regulation of cytoskeleton organization regulation of cellular component organization regulation of actin filament-based process cytoskeleton-dependent cytokinesis regulation of cytokinesis, actomyosin contractile ring assembly actomyosin contractile ring assembly cortical actin cytoskeleton organization actin filament-based process actin cytoskeleton organization actomyosin structure organization cortical cytoskeleton organization regulation of cytokinetic process regulation of cellular component biogenesis regulation of organelle organization organelle organization regulation of actomyosin structure organization cytokinetic process regulation of actin cytoskeleton organization actomyosin contractile ring organization cytoskeleton organization positive regulation of cell communication positive regulation of signal transduction positive regulation of canonical NF-kappaB signal transduction signaling regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette signal transduction regulation of signaling positive regulation of intracellular signal transduction canonical NF-kappaB signal transduction regulation of response to stimulus regulation of cell communication regulation of canonical NF-kappaB signal transduction positive regulation of signaling cellular developmental process cell differentiation mitotic cell cycle process mitotic cytokinesis mitotic cell cycle positive regulation of hydrolase activity regulation of hydrolase activity regulation of GTPase activity positive regulation of GTPase activity regulation of mitotic cytokinetic process positive regulation of mitotic cytokinesis mitotic cytokinetic process regulation of mitotic cytokinesis positive regulation of mitotic cytokinetic process cellular response to oxidative stress response to oxygen-containing compound cellular response to chemical stress cellular response to oxygen-containing compound cellular response to hydrogen peroxide response to reactive oxygen species response to hydrogen peroxide response to oxidative stress cellular response to reactive oxygen species cellular response to stress response to stress regulation of developmental process regulation of cell differentiation positive regulation of neuron differentiation positive regulation of developmental process neurogenesis neuron differentiation positive regulation of cell differentiation generation of neurons regulation of neuron differentiation small GTPase-mediated signal transduction regulation of small GTPase mediated signal transduction activation of GTPase activity protein-containing complex organization protein complex oligomerization protein-containing complex assembly protein homooligomerization	cell-cell junction cellular anatomical structure anchoring junction cell junction intracellular anatomical structure cytoplasm cytosol protein-containing complex mitotic spindle spindle intracellular membraneless organelle intracellular organelle centralspindlin complex cytoskeleton cell-cell junction cellular anatomical structure anchoring junction cell junction intracellular anatomical structure cytoplasm cytosol protein-containing complex mitotic spindle spindle intracellular membraneless organelle intracellular organelle centralspindlin complex cytoskeleton organelle membraneless organelle intracellular protein-containing complex microtubule cytoskeleton midbody cell periphery cell cortex centrosome microtubule organizing center cell division site cleavage furrow membrane plasma membrane plasma membrane region membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen apical junction complex bicellular tight junction tight junction nuclear body

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000219	Dbl homology domain	Domain
A	IPR035899	Dbl homology (DH) domain superfamily	Homologous Superfamily
A	IPR049395	ECT2, PH domain	Domain
A	IPR001357	BRCT domain	Domain
A	IPR011993	PH-like domain superfamily	Homologous Superfamily
A	IPR001331	Guanine-nucleotide dissociation stimulator, CDC24, conserved site	Conserved Site
A	IPR036420	BRCT domain superfamily	Homologous Superfamily
A	IPR026817	Guanine nucleotide exchange factor Ect2	Family
A	IPR049396	ECT2, BRCT0 domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9H8V3	Liver Cirrhosis, Experimental nasopharyngeal carcinoma pancreatic intraductal papillary-mucinous carcinoma primitive neuroectodermal tumor ulcerative colitis adrenal cortex carcinoma breast cancer Crohn disease esophageal adenocarcinoma IgA glomerulonephritis malignant colon neoplasm malignant pancreatic neoplasm non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm psoriasis Liver Cirrhosis, Experimental nasopharyngeal carcinoma pancreatic intraductal papillary-mucinous carcinoma primitive neuroectodermal tumor ulcerative colitis adrenal cortex carcinoma breast cancer Crohn disease esophageal adenocarcinoma IgA glomerulonephritis malignant colon neoplasm malignant pancreatic neoplasm non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm psoriasis atopic eczema breast carcinoma ductal breast carcinoma in situ glioblastoma invasive ductal breast carcinoma lung adenocarcinoma malignant glioma medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia tuberculosis atypical teratoid rhabdoid tumor cancer endometriosis hepatocellular carcinoma large cell medulloblastoma lung cancer

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.