Annotations: 3E1R

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	CEP55-EABR coiled coil-like	8047311	4005567	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	CEP55-EABR coiled coil-like	8104092	3002821	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	CEP55-EABR coiled coil-like	8104092	3002821	SCOP2B (2022-06-29)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.5.1180	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Geminin coiled-coil domain	CATH (4.3.0)
B	1.20.5.1180	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Geminin coiled-coil domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF12180	TSG101 and ALIX binding domain of CEP55 (EABR)	TSG101 and ALIX binding domain of CEP55	This domain family is found in eukaryotes, and is approximately 40 amino acids in length. This domain is the active domain of CEP55. CEP55 is a protein involved in cytokinesis, specifically in abscission of the plasma membrane at the midbody. To perf ...	This domain family is found in eukaryotes, and is approximately 40 amino acids in length. This domain is the active domain of CEP55. CEP55 is a protein involved in cytokinesis, specifically in abscission of the plasma membrane at the midbody. To perform this function, CEP55 complexes with ESCRT-I (by a Proline rich sequence in its TSG101 domain) and ALIX. This is the domain on CEP55 which binds to both TSG101 and ALIX. It also acts as a hinge between the N and C termini. This domain is called EABR.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Centrosomal protein of 55 kDa	identical protein binding protein binding binding	mitotic cell cycle process cytoskeleton-dependent cytokinesis mitotic cytokinesis cellular process cytokinesis cell division cell cycle mitotic cell cycle cell cycle process protein localization localization establishment of protein localization cellular localization cellular macromolecule localization mitotic cell cycle process cytoskeleton-dependent cytokinesis mitotic cytokinesis cellular process cytokinesis cell division cell cycle mitotic cell cycle cell cycle process protein localization localization establishment of protein localization cellular localization cellular macromolecule localization macromolecule localization establishment of localization developmental process anatomical structure development cranial skeletal system development membrane organization mitotic cytokinetic process cellular component organization midbody abscission cytokinetic process cellular component organization or biogenesis cellular response to stimulus regulation of biological process regulation of signaling regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of cellular process response to stimulus signaling biological regulation regulation of signal transduction intracellular signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette regulation of cell communication signal transduction phosphatidylinositol 3-kinase/protein kinase B signal transduction	midbody cellular anatomical entity intercellular bridge membrane intracellular organelle centrosome microtubule organizing center intracellular anatomical structure cytoskeleton organelle intracellular non-membrane-bounded organelle microtubule cytoskeleton non-membrane-bounded organelle centriole midbody cellular anatomical entity intercellular bridge membrane intracellular organelle centrosome microtubule organizing center intracellular anatomical structure cytoskeleton organelle intracellular non-membrane-bounded organelle microtubule cytoskeleton non-membrane-bounded organelle centriole Flemming body cytoplasm cell division site cell periphery cleavage furrow plasma membrane plasma membrane region
C	Programmed cell death 6-interacting protein	proteinase activated receptor binding protein binding binding signaling receptor binding G protein-coupled receptor binding identical protein binding protein homodimerization activity protein dimerization activity calcium-dependent protein binding	mitotic cell cycle process cytoskeleton-dependent cytokinesis mitotic cytokinesis cellular process cytokinesis cell division cell cycle mitotic cell cycle cell cycle process organelle assembly multivesicular body assembly vesicle organization cellular component organization cellular component biogenesis mitotic cell cycle process cytoskeleton-dependent cytokinesis mitotic cytokinesis cellular process cytokinesis cell division cell cycle mitotic cell cycle cell cycle process organelle assembly multivesicular body assembly vesicle organization cellular component organization cellular component biogenesis organelle organization cellular component assembly multivesicular body organization endosome organization cellular component organization or biogenesis endomembrane system organization protein localization establishment of protein localization cellular localization nitrogen compound transport transport organic substance transport establishment of localization localization protein transport cellular macromolecule localization macromolecule localization apoptotic process cell death programmed cell death regulation of biological process microtubule organizing center organization regulation of cellular process regulation of cellular component organization regulation of centrosome cycle regulation of cell cycle process microtubule cytoskeleton organization regulation of microtubule-based process biological regulation centrosome duplication centrosome cycle regulation of centrosome duplication microtubule-based process regulation of cell cycle cytoskeleton organization membrane organization mitotic cytokinetic process midbody abscission cytokinetic process organonitrogen compound catabolic process organonitrogen compound metabolic process catabolic process proteolysis involved in protein catabolic process primary metabolic process protein catabolic process macromolecule catabolic process organic substance metabolic process ubiquitin-independent protein catabolic process via the multivesicular body sorting pathway proteolysis metabolic process protein metabolic process macromolecule metabolic process organic substance catabolic process establishment or maintenance of bipolar cell polarity establishment or maintenance of epithelial cell apical/basal polarity maintenance of cell polarity maintenance of epithelial cell apical/basal polarity maintenance of apical/basal cell polarity establishment or maintenance of apical/basal cell polarity establishment or maintenance of cell polarity virion assembly viral process viral budding viral budding via host ESCRT complex viral life cycle bicellular tight junction assembly tight junction organization apical junction assembly cell junction organization cell junction assembly tight junction assembly cell-cell junction assembly cell-cell junction organization multivesicular body sorting pathway vesicle-mediated transport cellular catabolic process macroautophagy cellular metabolic process autophagy process utilizing autophagic mechanism exosomal secretion establishment of organelle localization regulation of localization positive regulation of biological process positive regulation of secretion by cell positive regulation of exosomal secretion positive regulation of exocytosis secretion by cell regulation of secretion by cell positive regulation of secretion organelle localization establishment of localization in cell positive regulation of cellular process vesicle localization positive regulation of cellular component biogenesis secretion regulation of transport regulation of exosomal secretion establishment of vesicle localization export from cell regulation of cellular component biogenesis regulation of vesicle-mediated transport extracellular exosome biogenesis regulation of secretion exocytosis positive regulation of transport extracellular vesicle biogenesis regulation of exocytosis regulation of extracellular exosome assembly regulation of organelle organization regulation of organelle assembly extracellular exosome assembly assembly of actomyosin apparatus involved in cytokinesis actin cytoskeleton organization actomyosin structure organization cortical cytoskeleton organization actomyosin contractile ring assembly cortical actin cytoskeleton organization actin filament-based process actomyosin contractile ring organization protein-containing complex organization protein complex oligomerization protein-containing complex assembly protein homooligomerization positive regulation of extracellular exosome assembly positive regulation of organelle organization positive regulation of cellular component organization positive regulation of organelle assembly regulation of membrane permeability regulation of biological quality	anchoring junction cell junction cellular anatomical entity focal adhesion cell-substrate junction membrane membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cytoplasmic vesicle anchoring junction cell junction cellular anatomical entity focal adhesion cell-substrate junction membrane membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cytoplasmic vesicle organelle cytoplasm vesicle cytoskeleton intracellular non-membrane-bounded organelle actin cytoskeleton actomyosin non-membrane-bounded organelle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle centrosome microtubule organizing center microtubule cytoskeleton cytosol endoplasmic reticulum exit site endoplasmic reticulum endomembrane system cell periphery immunological synapse plasma membrane endosome cell-cell junction apical junction complex bicellular tight junction tight junction Flemming body midbody

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR022008	TSG101 and ALIX binding domain of CEP55	Domain
A, B	IPR038926	Centrosomal protein of 55kDa	Family
C	IPR004328	BRO1 domain	Domain
C	IPR025304	ALIX V-shaped domain	Domain
C	IPR038499	BRO1 domain superfamily	Homologous Superfamily
C	IPR045251	Vacuolar protein-sorting protein Bro1-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q53EZ4	polycystic ovary syndrome multinucleated neurons-anhydramnios-renal dysplasia-cerebellar hypoplasia-hydranencephaly syndrome malignant glioma medulloblastoma non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm adrenal cortex carcinoma primitive neuroectodermal tumor breast cancer Sjogren syndrome Crohn disease esophageal adenocarcinoma IgA glomerulonephritis large cell medulloblastoma malignant colon neoplasm polycystic ovary syndrome multinucleated neurons-anhydramnios-renal dysplasia-cerebellar hypoplasia-hydranencephaly syndrome malignant glioma medulloblastoma non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm adrenal cortex carcinoma primitive neuroectodermal tumor breast cancer Sjogren syndrome Crohn disease esophageal adenocarcinoma IgA glomerulonephritis large cell medulloblastoma malignant colon neoplasm malignant pancreatic neoplasm ovarian cancer pilocytic astrocytoma atopic eczema psoriasis breast carcinoma ulcerative colitis ductal breast carcinoma in situ glioblastoma interstitial cystitis lung adenocarcinoma malignant ependymoma Meckel syndrome nasopharyngeal carcinoma pancreatic intraductal papillary-mucinous carcinoma atypical teratoid rhabdoid tumor Sclerocystic Ovaries endometriosis hepatocellular carcinoma invasive ductal breast carcinoma lung cancer
C	Pharos: Q8WUM4	astrocytic tumor IgA glomerulonephritis myopathy osteoarthritis ovarian cancer subependymal giant cell astrocytoma attention deficit hyperactivity disorder, inattentive type lymphoplasmacytic lymphoma non-small cell lung carcinoma osteoarthritis susceptibility 1 pancreatic intraductal papillary-mucinous neoplasm ulcerative colitis glioblastoma malignant ependymoma oligodendroglioma astrocytic tumor IgA glomerulonephritis myopathy osteoarthritis ovarian cancer subependymal giant cell astrocytoma attention deficit hyperactivity disorder, inattentive type lymphoplasmacytic lymphoma non-small cell lung carcinoma osteoarthritis susceptibility 1 pancreatic intraductal papillary-mucinous neoplasm ulcerative colitis glioblastoma malignant ependymoma oligodendroglioma Osteoarthrosis Deformans Pick disease

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.