2I0I

X-ray crystal structure of Sap97 PDZ3 bound to the C-terminal peptide of HPV18 E6

External Resource: Annotation

Domain Annotation: SCOP/SCOPe 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	d2i0ia1	All beta proteins	PDZ domain-like	PDZ domain-like	PDZ domain	Discs large protein homolog	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
C [auth B]	d2i0ib1	All beta proteins	PDZ domain-like	PDZ domain-like	PDZ domain	Discs large protein homolog	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
E [auth C]	d2i0ic1	All beta proteins	PDZ domain-like	PDZ domain-like	PDZ domain	Discs large protein homolog	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PDZ	e2i0iA1	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PDZ	ECOD (1.6)
C [auth B]	PDZ	e2i0iB1	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PDZ	ECOD (1.6)
E [auth C]	PDZ	e2i0iC1	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PDZ	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.3.0)
C [auth B]	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.3.0)
E [auth C]	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C [auth B], E [auth C]	PF00595	PDZ domain (PDZ)	PDZ domain	PDZ domains are found in diverse signaling proteins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C [auth B], E [auth C]	Disks large homolog 1	structural constituent of postsynapse structural molecule activity structural constituent of postsynaptic density structural constituent of synapse structural constituent of postsynaptic specialization potassium channel regulator activity channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity cytoskeletal protein binding protein binding binding kinesin binding structural constituent of postsynapse structural molecule activity structural constituent of postsynaptic density structural constituent of synapse structural constituent of postsynaptic specialization potassium channel regulator activity channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity cytoskeletal protein binding protein binding binding kinesin binding L27 domain binding protein domain specific binding PDZ domain binding kinase binding enzyme binding protein kinase binding molecular adaptor activity phosphatase binding ionotropic glutamate receptor binding signaling receptor binding glutamate receptor binding transmembrane transporter binding	protein localization localization cellular localization cellular macromolecule localization macromolecule localization cellular process cellular response to endogenous stimulus cellular response to growth factor stimulus response to stimulus response to endogenous stimulus cellular response to nerve growth factor stimulus cellular response to brain-derived neurotrophic factor stimulus response to nerve growth factor response to growth factor protein localization localization cellular localization cellular macromolecule localization macromolecule localization cellular process cellular response to endogenous stimulus cellular response to growth factor stimulus response to stimulus response to endogenous stimulus cellular response to nerve growth factor stimulus cellular response to brain-derived neurotrophic factor stimulus response to nerve growth factor response to growth factor developmental process multicellular organismal process sensory organ development eye development animal organ development visual system development multicellular organism development camera-type eye development anatomical structure development sensory system development lens development in camera-type eye system development positive regulation of protein localization to plasma membrane regulation of localization regulation of cellular process regulation of protein localization positive regulation of biological process regulation of protein localization to membrane positive regulation of cellular process positive regulation of protein localization to cell periphery regulation of biological process protein localization to cell periphery protein localization to plasma membrane biological regulation positive regulation of protein localization to membrane localization within membrane regulation of protein localization to cell periphery protein localization to membrane regulation of cellular localization positive regulation of protein localization regulation of protein localization to plasma membrane heart process system process regulation of actin filament-based process cardiac muscle cell action potential involved in contraction regulation of ventricular cardiac muscle cell action potential regulation of heart contraction regulation of system process cardiac muscle contraction striated muscle contraction circulatory system process regulation of cardiac muscle cell action potential actin filament-based process regulation of multicellular organismal process regulation of biological quality blood circulation cardiac muscle cell contraction regulation of action potential ventricular cardiac muscle cell action potential regulation of cardiac muscle contraction action potential actin filament-based movement muscle contraction muscle system process regulation of muscle system process regulation of blood circulation regulation of striated muscle contraction regulation of actin filament-based movement regulation of muscle contraction regulation of cardiac muscle cell contraction actin-mediated cell contraction heart contraction cardiac muscle cell action potential regulation of membrane potential negative regulation of lymphocyte proliferation regulation of leukocyte activation negative regulation of biological process regulation of cell activation negative regulation of T cell proliferation negative regulation of cell adhesion negative regulation of leukocyte proliferation T cell activation lymphocyte proliferation regulation of immune system process regulation of leukocyte proliferation cell population proliferation negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion regulation of cell population proliferation mononuclear cell proliferation negative regulation of cell-cell adhesion regulation of leukocyte cell-cell adhesion negative regulation of multicellular organismal process negative regulation of leukocyte activation lymphocyte activation negative regulation of lymphocyte activation leukocyte proliferation leukocyte cell-cell adhesion leukocyte activation negative regulation of mononuclear cell proliferation cell adhesion cell-cell adhesion negative regulation of cellular process regulation of cell-cell adhesion T cell proliferation regulation of lymphocyte proliferation negative regulation of cell population proliferation regulation of cell adhesion cell activation regulation of T cell activation negative regulation of cell activation regulation of T cell proliferation negative regulation of immune system process immune system process regulation of mononuclear cell proliferation regulation of lymphocyte activation cellular response to stimulus signaling negative regulation of signaling negative regulation of intracellular signal transduction regulation of signal transduction intracellular signal transduction negative regulation of cell communication cell communication regulation of intracellular signal transduction intracellular signaling cassette signal transduction regulation of signaling negative regulation of response to stimulus regulation of MAPK cascade negative regulation of signal transduction negative regulation of ERK1 and ERK2 cascade regulation of response to stimulus MAPK cascade regulation of cell communication ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade negative regulation of MAPK cascade protein-containing complex localization tissue morphogenesis anatomical structure morphogenesis tissue development 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 regulation of potassium ion transport transport regulation of transport regulation of monoatomic ion transport establishment of localization metal ion transport positive regulation of potassium ion transport positive regulation of transport positive regulation of monoatomic ion transport monoatomic ion transport potassium ion transport monoatomic cation transport regulation of metal ion transport metabolic process primary metabolic process protein metabolic process macromolecule metabolic process amyloid precursor protein metabolic process trans-synaptic signaling synaptic signaling anterograde trans-synaptic signaling cell-cell signaling chemical synaptic transmission monoatomic ion transmembrane transport potassium ion transmembrane transport regulation of monoatomic ion transmembrane transport export across plasma membrane potassium ion export across plasma membrane monoatomic cation transmembrane transport export from cell inorganic ion transmembrane transport regulation of potassium ion transmembrane transport inorganic cation transmembrane transport transmembrane transport regulation of transmembrane transport regulation of potassium ion export across plasma membrane regulation of monoatomic cation transmembrane transport RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process transcription by RNA polymerase II negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process organelle organization actin cytoskeleton organization actin filament organization supramolecular fiber organization cytoskeleton organization receptor clustering smooth muscle contraction phasic smooth muscle contraction peristalsis endothelial cell proliferation epithelial cell proliferation membrane organization membrane raft organization protein polymerization actin polymerization or depolymerization actin filament polymerization protein-containing complex organization protein-containing complex assembly receptor localization to synapse positive regulation of cell population proliferation positive regulation of organelle organization regulation of cytoskeleton organization regulation of cellular component organization positive regulation of cellular component organization regulation of cellular component size regulation of protein-containing complex assembly positive regulation of protein-containing complex assembly positive regulation of protein polymerization regulation of actin filament polymerization regulation of actin filament organization positive regulation of cellular component biogenesis positive regulation of cytoskeleton organization regulation of actin polymerization or depolymerization positive regulation of supramolecular fiber organization regulation of cellular component biogenesis regulation of organelle organization regulation of protein polymerization regulation of actin filament length regulation of actin cytoskeleton organization regulation of supramolecular fiber organization positive regulation of actin filament polymerization regulation of anatomical structure size establishment of organelle localization centrosome localization organelle localization establishment of localization in cell microtubule organizing center localization establishment of centrosome localization establishment or maintenance of bipolar cell polarity establishment or maintenance of epithelial cell apical/basal polarity establishment or maintenance of apical/basal cell polarity establishment or maintenance of cell polarity protein localization to postsynaptic specialization membrane protein localization to postsynaptic membrane protein localization to synapse neurotransmitter receptor localization to postsynaptic specialization membrane regulation of postsynaptic membrane neurotransmitter receptor levels protein localization to organelle protein localization to postsynapse protein localization to cell junction positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of gene expression positive regulation of biosynthetic process positive regulation of macromolecule metabolic process hard palate development secondary palate development roof of mouth development embryonic organ morphogenesis chordate embryonic development embryonic morphogenesis embryo development embryo development ending in birth or egg hatching skeletal system development animal organ morphogenesis embryonic skeletal system development skeletal system morphogenesis embryonic organ development embryonic skeletal system morphogenesis head development forebrain development brain development nervous system development pallium development cerebral cortex development central nervous system development telencephalon development cortical actin cytoskeleton organization cortical cytoskeleton organization regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction phosphatidylinositol 3-kinase/protein kinase B signal transduction reproductive system development reproductive process reproductive structure development developmental process involved in reproduction regulation of epithelial cell proliferation negative regulation of epithelial cell proliferation mesonephric epithelium development kidney epithelium development nephron morphogenesis branching morphogenesis of an epithelial tube nephron tubule morphogenesis nephron epithelium morphogenesis nephron tubule development renal system development ureteric bud morphogenesis tube morphogenesis branching involved in ureteric bud morphogenesis renal tubule development epithelial tube morphogenesis nephron development nephron epithelium development ureteric bud development epithelium development tube development mesonephros development morphogenesis of an epithelium kidney morphogenesis morphogenesis of a branching structure mesonephric tubule morphogenesis kidney development mesonephric tubule development renal tubule morphogenesis morphogenesis of a branching epithelium regulation of protein localization to synapse regulation of multicellular organismal development regulation of developmental process regulation of myelination regulation of nervous system development myelination axon ensheathment ensheathment of neurons microtubule cytoskeleton organization cytoplasmic microtubule organization cortical microtubule organization microtubule-based process negative regulation of p38MAPK cascade p38MAPK cascade regulation of p38MAPK cascade import into cell potassium ion import across plasma membrane import across plasma membrane inorganic cation import across plasma membrane inorganic ion import across plasma membrane regulation of potassium ion import regulation of cell shape cell morphogenesis regulation of cell morphogenesis regulation of anatomical structure morphogenesis astral microtubule organization cell cycle spindle organization cell cycle process regulation of cell cycle phase transition negative regulation of cell cycle cell cycle phase transition regulation of cell cycle G1/S phase transition cell cycle G1/S phase transition mitotic cell cycle negative regulation of mitotic cell cycle regulation of mitotic cell cycle negative regulation of cell cycle phase transition regulation of cell cycle negative regulation of G1/S transition of mitotic cell cycle negative regulation of mitotic cell cycle phase transition regulation of cell cycle process negative regulation of cell cycle G1/S phase transition negative regulation of cell cycle process 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 mitotic cell cycle phase transition immunological synapse formation cell-cell recognition cell recognition muscle tissue development smooth muscle tissue development multicellular organismal-level homeostasis epithelial structure maintenance homeostatic process anatomical structure homeostasis tissue homeostasis	postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse organelle cell junction postsynaptic specialization membrane postsynaptic specialization synapse membrane plasma membrane postsynaptic density membrane synaptic membrane cell periphery postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse organelle cell junction postsynaptic membrane asymmetric synapse plasma membrane region sarcolemma T-tubule cell-cell junction anchoring junction intracellular anatomical structure cytoplasm cytosol neuromuscular junction apical part of cell apical plasma membrane axon cell projection main axon neuron projection node of Ranvier plasma membrane bounded cell projection basal part of cell basal plasma membrane cell projection membrane membrane microdomain membrane raft membrane-bounded organelle organelle subcompartment intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum membrane immunological synapse lateral plasma membrane lateral loop myelin sheath myelin sheath abaxonal region basement membrane extracellular matrix external encapsulating structure collagen-containing extracellular matrix presynapse presynaptic membrane basolateral plasma membrane somatodendritic compartment dendrite dendritic tree glutamatergic synapse Golgi apparatus actin-based cell projection microvillus perinuclear region of cytoplasm cell body neuronal cell body postsynaptic density, intracellular component intracellular membraneless organelle postsynaptic specialization, intracellular component membraneless organelle intracellular vesicle transport vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane synaptic vesicle synaptic vesicle membrane vesicle transport vesicle exocytic vesicle membrane cytoplasmic vesicle membrane secretory vesicle exocytic vesicle polymeric cytoskeletal fiber cytoskeleton supramolecular fiber microtubule supramolecular polymer supramolecular complex microtubule cytoskeleton paranode region of axon adherens junction protein-containing complex plasma membrane protein complex membrane protein complex MPP7-DLG1-LIN7 complex apical junction complex bicellular tight junction tight junction cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane nucleus
B [auth D], D [auth E], F	peptide E6	DNA binding binding organic cyclic compound binding nucleic acid binding protein binding PDZ domain binding protein domain specific binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of DNA-templated transcription regulation of biological process negative regulation of metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process cellular process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process symbiont-mediated perturbation of host defense response biological process involved in interspecies interaction between organisms symbiont-mediated perturbation of host process viral process modulation by virus of host process virus-mediated perturbation of host defense response modulation of process of another organism biological process involved in interaction with host modulation by virus of host cellular process biological process involved in symbiotic interaction symbiont-mediated perturbation of host cellular process response to stimulus symbiont-mediated suppression of host pathogen-associated molecular pattern receptor signaling pathway response to biotic stimulus symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response symbiont-mediated suppression of host defenses symbiont-mediated perturbation of host innate immune response response to host response to external biotic stimulus symbiont-mediated perturbation of host signal transduction pathway response to host defenses response to other organism symbiont-mediated perturbation of host immune response symbiont-mediated perturbation of host defenses response to defenses of other organism response to external stimulus symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity symbiont-mediated suppression of host signal transduction pathway symbiont-mediated suppression of cytoplasmic pattern recognition receptor signaling pathway symbiont-mediated perturbation of host ubiquitin-like protein modification symbiont-mediated suppression of host interferon-mediated signaling pathway symbiont-mediated suppression of host type I interferon-mediated signaling pathway symbiont-mediated perturbation of host programmed cell death regulation of killing of cells of another organism disruption of cell in another organism regulation of cell killing symbiont-mediated perturbation of host apoptosis disruption of anatomical structure in another organism killing of cells of another organism cell killing	host intracellular membrane-bounded organelle host cellular component host intracellular part cellular anatomical structure host cell part host intracellular region host cell nucleus host intracellular organelle host cell cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C [auth B], E [auth C]	IPR015143	L27-1	Domain
A, C [auth B], E [auth C]	IPR016313	Disks large 1-like	Family
A, C [auth B], E [auth C]	IPR019590	Disks large homologue 1, N-terminal PEST domain	Domain
A, C [auth B], E [auth C]	IPR008144	Guanylate kinase-like domain	Domain
A, C [auth B], E [auth C]	IPR008145	Guanylate kinase/L-type calcium channel beta subunit	Domain
A, C [auth B], E [auth C]	IPR001478	PDZ domain	Domain
A, C [auth B], E [auth C]	IPR036028	SH3-like domain superfamily	Homologous Superfamily
A, C [auth B], E [auth C]	IPR020590	Guanylate kinase, conserved site	Conserved Site
A, C [auth B], E [auth C]	IPR019583	Disks large homolog 1-4, PDZ-associated domain	Domain
A, C [auth B], E [auth C]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, C [auth B], E [auth C]	IPR050614	Synaptic Scaffolding LAP/MAGUK Families	Family
A, C [auth B], E [auth C]	IPR001452	SH3 domain	Domain
A, C [auth B], E [auth C]	IPR004172	L27 domain	Domain
A, C [auth B], E [auth C]	IPR036034	PDZ superfamily	Homologous Superfamily
A, C [auth B], E [auth C]	IPR036892	L27 domain superfamily	Homologous Superfamily
B [auth D], D [auth E], F	IPR038575	E6 superfamily	Homologous Superfamily
B [auth D], D [auth E], F	IPR001334	E6 early regulatory protein	Family

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.