6M8R

Crystal structure of the KCTD16 BTB domain in complex with GABAB2 peptide

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth G]	PF02214	e6m8rG1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
B [auth H]	PF02214	e6m8rH1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
C [auth I]	PF02214	e6m8rI1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
D [auth J]	PF02214	e6m8rJ1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
E [auth B]	PF02214	e6m8rB1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
F [auth C]	PF02214	e6m8rC1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
G [auth D]	PF02214	e6m8rD1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
H [auth E]	PF02214	e6m8rE1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
I [auth A]	PF02214	e6m8rA1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
J [auth F]	PF02214	e6m8rF1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth G]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
B [auth H]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
C [auth I]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
D [auth J]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
E [auth B]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
F [auth C]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
G [auth D]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
H [auth E]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
I [auth A]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
J [auth F]	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], F [auth C], G [auth D], H [auth E], I [auth A], J [auth F]	PF02214	BTB/POZ domain (BTB_2)	BTB/POZ domain	In voltage-gated K+ channels this domain is responsible for subfamily-specific assembly of alpha-subunits into functional tetrameric channels [1]. In KCTD1 (Swiss:Q719H9) this domain functions as a transcriptional repressor [2]. It also mediates homo ...	In voltage-gated K+ channels this domain is responsible for subfamily-specific assembly of alpha-subunits into functional tetrameric channels [1]. In KCTD1 (Swiss:Q719H9) this domain functions as a transcriptional repressor [2]. It also mediates homomultimerisation of KCTD1 and interaction of KCTD1 with the transcription factor AP-2-alpha [2-3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], F [auth C], G [auth D], H [auth E], I [auth A], J [auth F]	BTB/POZ domain-containing protein KCTD16	-	cellular response to stimulus regulation of biological process regulation of signaling regulation of cellular process response to stimulus signaling biological regulation regulation of signal transduction cell communication regulation of response to stimulus regulation of cell communication G protein-coupled receptor signaling pathway cellular process signal transduction cellular response to stimulus regulation of biological process regulation of signaling regulation of cellular process response to stimulus signaling biological regulation regulation of signal transduction cell communication regulation of response to stimulus regulation of cell communication G protein-coupled receptor signaling pathway cellular process signal transduction regulation of G protein-coupled receptor signaling pathway cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly protein homooligomerization cellular component organization or biogenesis	protein-containing complex receptor complex cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane presynapse presynaptic membrane protein-containing complex receptor complex cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane presynapse presynaptic membrane cell projection
K, L	Gamma-aminobutyric acid type B receptor subunit 2	protein heterodimerization activity protein binding binding protein dimerization activity G protein-coupled GABA receptor activity GABA receptor activity molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity	regulation of biological process signaling biological regulation cell-cell signaling neuron-glial cell signaling cellular process cell communication gamma-aminobutyric acid signaling pathway regulation of catalytic activity negative regulation of molecular function negative regulation of catalytic activity negative regulation of adenylate cyclase activity regulation of molecular function regulation of lyase activity regulation of biological process signaling biological regulation cell-cell signaling neuron-glial cell signaling cellular process cell communication gamma-aminobutyric acid signaling pathway regulation of catalytic activity negative regulation of molecular function negative regulation of catalytic activity negative regulation of adenylate cyclase activity regulation of molecular function regulation of lyase activity negative regulation of lyase activity regulation of adenylate cyclase activity negative regulation of cyclase activity regulation of cyclase activity trans-synaptic signaling synaptic signaling anterograde trans-synaptic signaling chemical synaptic transmission cellular response to stimulus regulation of cellular process response to stimulus adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction synaptic transmission, GABAergic	cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane protein-containing complex plasma membrane protein complex membrane protein complex receptor complex cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane protein-containing complex plasma membrane protein complex membrane protein complex receptor complex GABA receptor complex G protein-coupled receptor dimeric complex plasma membrane signaling receptor complex G protein-coupled receptor complex G protein-coupled GABA receptor complex G protein-coupled receptor heterodimeric complex intracellular anatomical structure cytoplasm cell projection neuron projection plasma membrane bounded cell projection

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], F [auth C], G [auth D], H [auth E], I [auth A], J [auth F]	IPR003131	Potassium channel tetramerisation-type BTB domain	Domain
A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], F [auth C], G [auth D], H [auth E], I [auth A], J [auth F]	IPR000210	BTB/POZ domain	Domain
A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], F [auth C], G [auth D], H [auth E], I [auth A], J [auth F]	IPR011333	SKP1/BTB/POZ domain superfamily	Homologous Superfamily
K, L	IPR017978	GPCR family 3, C-terminal	Domain
K, L	IPR017979	GPCR, family 3, conserved site	Conserved Site
K, L	IPR002457	GPCR family 3, gamma-aminobutyric acid receptor, type B2	Family
K, L	IPR000337	GPCR, family 3	Family
K, L	IPR002455	GPCR family 3, GABA-B receptor	Family
K, L	IPR028082	Periplasmic binding protein-like I	Homologous Superfamily
K, L	IPR041689	Gamma-aminobutyric acid type B receptor subunit 2, coiled-coil domain	Domain
K, L	IPR001828	Receptor, ligand binding region	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], A [auth G], B [auth H], C [auth I], D [auth J], E [auth B], F [auth C], G [auth D], H [auth E], I [auth A], J [auth F]	Pharos: Q68DU8	astrocytic tumor large cell medulloblastoma medulloblastoma primitive neuroectodermal tumor atypical teratoid rhabdoid tumor malignant ependymoma oligodendroglioma psoriasis glioblastoma malignant glioma pilocytic astrocytoma
K, L	Pharos: O75899	Muscle spasticity of spinal origin nicotine dependence pituitary cancer subependymal giant cell astrocytoma adrenal cortex adenoma atypical teratoid rhabdoid tumor interstitial cystitis major depressive disorder medulloblastoma narcolepsy oligodendroglioma primitive neuroectodermal tumor astrocytic tumor autism developmental and epileptic encephalopathy, 59 Muscle spasticity of spinal origin nicotine dependence pituitary cancer subependymal giant cell astrocytoma adrenal cortex adenoma atypical teratoid rhabdoid tumor interstitial cystitis major depressive disorder medulloblastoma narcolepsy oligodendroglioma primitive neuroectodermal tumor astrocytic tumor autism developmental and epileptic encephalopathy, 59 glioblastoma interstitial lung disease malignant ependymoma neurodevelopmental disorder with poor language and loss of hand skills pilocytic astrocytoma psoriasis atypical Rett syndrome epilepsy intellectual disability large cell medulloblastoma malignant glioma

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.