Annotations: 8UKY

Crystal structure of BAK in complex with inhibiting antibody 14G6

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
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)
F [auth D]	V-set	e8ukyD1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
C	V-set	e8ukyC1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
E [auth B]	V-set	e8ukyB1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
B [auth H]	CPSase_L_D2	e8ukyH01	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: CPSase_L_D2	ECOD (v295)
D [auth A]	V-set	e8ukyA1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
A [auth L]	CPSase_L_D2	e8ukyL01	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: CPSase_L_D2	ECOD (v295)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth H], E [auth B]	Heavy Chain	IGHV1	-	bcl-2 homologous antagonist/killer	SAbDab (2026-06-26)
A [auth L], D [auth A]	Light Chain	IGKV6	Kappa	bcl-2 homologous antagonist/killer	SAbDab (2026-06-26)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C, F [auth D]	PF00452	Apoptosis regulator proteins, Bcl-2 family (Bcl-2)	Apoptosis regulator proteins, Bcl-2 family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, F [auth D]	Bcl-2 homologous antagonist/killer	protein binding binding heat shock protein binding BH domain binding protein domain specific binding protein-folding chaperone binding wide pore channel activity passive transmembrane transporter activity channel activity porin activity transporter activity transmembrane transporter activity protein-containing complex binding cation binding protein binding binding heat shock protein binding BH domain binding protein domain specific binding protein-folding chaperone binding wide pore channel activity passive transmembrane transporter activity channel activity porin activity transporter activity transmembrane transporter activity protein-containing complex binding cation binding ion binding metal ion binding small molecule binding identical protein binding protein heterodimerization activity protein dimerization activity transmembrane transporter binding protein homodimerization activity	response to stimulus response to chemical response to xenobiotic stimulus inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis endoplasmic reticulum calcium ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis response to stimulus response to chemical response to xenobiotic stimulus inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis endoplasmic reticulum calcium ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis cellular response to stimulus positive regulation of organelle organization regulation of cellular process regulation of cellular component organization positive regulation of cellular component organization signaling apoptotic mitochondrial changes positive regulation of biological process regulation of release of cytochrome c from mitochondria cell communication cellular component organization positive regulation of release of cytochrome c from mitochondria cellular component organization or biogenesis signal transduction positive regulation of cellular process mitochondrion organization regulation of biological process biological regulation cell death regulation of organelle organization apoptotic signaling pathway release of cytochrome c from mitochondria organelle organization regulation of mitochondrion organization cellular process apoptotic process programmed cell death protein-containing complex organization positive regulation of cellular component biogenesis regulation of cellular component biogenesis cellular component biogenesis positive regulation of protein-containing complex assembly regulation of protein-containing complex assembly cellular component assembly protein-containing complex assembly positive regulation of programmed cell death regulation of apoptotic process regulation of programmed cell death positive regulation of apoptotic process regulation of localization negative regulation of biological process regulation of signal transduction localization negative regulation of apoptotic signaling pathway regulation of biological quality positive regulation of membrane permeability negative regulation of cellular component organization negative regulation of programmed cell death establishment of localization negative regulation of apoptotic process regulation of response to stimulus regulation of membrane permeability negative regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway regulation of mitochondrial membrane permeability involved in apoptotic process regulation of apoptotic signaling pathway negative regulation of mitochondrial membrane permeability transport negative regulation of signaling mitochondrial outer membrane permeabilization involved in programmed cell death negative regulation of cell communication positive regulation of mitochondrial membrane permeability involved in apoptotic process negative regulation of cellular process positive regulation of mitochondrial membrane permeability regulation of mitochondrial membrane permeability regulation of signaling regulation of transport negative regulation of response to stimulus negative regulation of signal transduction negative regulation of organelle organization regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway regulation of cell communication negative regulation of membrane permeability mitochondrial outer membrane permeabilization signal transduction in absence of ligand cell surface receptor signaling pathway extrinsic apoptotic signaling pathway extrinsic apoptotic signaling pathway in absence of ligand positive regulation of IRE1-mediated unfolded protein response positive regulation of cell communication positive regulation of signal transduction regulation of cellular response to stress endoplasmic reticulum unfolded protein response regulation of response to endoplasmic reticulum stress intracellular signal transduction positive regulation of response to stimulus regulation of endoplasmic reticulum unfolded protein response positive regulation of response to endoplasmic reticulum stress cellular response to stress regulation of intracellular signal transduction response to stress regulation of response to stress positive regulation of endoplasmic reticulum unfolded protein response response to endoplasmic reticulum stress regulation of IRE1-mediated unfolded protein response cellular response to topologically incorrect protein positive regulation of intracellular signal transduction cellular response to unfolded protein response to unfolded protein response to topologically incorrect protein IRE1-mediated unfolded protein response positive regulation of signaling positive regulation of protein metabolic process regulation of protein metabolic process primary metabolic process regulation of macromolecule metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of proteolysis proteolysis positive regulation of proteolysis metabolic process positive regulation of macromolecule metabolic process protein metabolic process macromolecule metabolic process regulation of metabolic process negative regulation of release of cytochrome c from mitochondria response to hydrogen peroxide response to oxidative stress response to oxygen-containing compound response to reactive oxygen species transmembrane transport monoatomic ion transmembrane transport monoatomic ion transport establishment or maintenance of transmembrane electrochemical gradient intrinsic apoptotic signaling pathway regulation of mitochondrial membrane potential regulation of membrane potential response to alcohol response to ethanol developmental process multicellular organism development multicellular organismal process pancreas development endocrine system development anatomical structure development animal organ development endocrine pancreas development system development DNA damage response intrinsic apoptotic signaling pathway in response to DNA damage response to mechanical stimulus response to external stimulus response to abiotic stimulus cellular response to mechanical stimulus cellular response to abiotic stimulus cellular response to external stimulus cellular response to environmental stimulus response to light stimulus cellular response to radiation response to UV cellular response to light stimulus response to radiation cellular response to UV negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress animal organ regeneration regeneration regulation of biosynthetic process negative regulation of metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process negative regulation of macromolecule metabolic process positive regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway positive regulation of transport response to UV-C	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle mitochondrial membrane mitochondrion membrane organelle outer membrane intracellular membrane-bounded organelle intracellular organelle organelle envelope bounding membrane of organelle organelle cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle mitochondrial membrane mitochondrion membrane organelle outer membrane intracellular membrane-bounded organelle intracellular organelle organelle envelope bounding membrane of organelle organelle mitochondrial envelope mitochondrial outer membrane outer membrane organelle membrane protein-containing complex BAK complex Bcl-2 family protein complex pore complex membrane protein complex endoplasmic reticulum endomembrane system
B [auth H], E [auth B]	14G6 Fab heavy chain	-	-	-
A [auth L], D [auth A]	14G6 Fab light chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C, F [auth D]	IPR036834	Bcl-2-like superfamily	Homologous Superfamily
C, F [auth D]	IPR002475	Bcl2-like	Family
C, F [auth D]	IPR020728	Apoptosis regulator, Bcl-2, BH3 motif, conserved site	Conserved Site
C, F [auth D]	IPR020726	Apoptosis regulator, Bcl-2, BH2 motif, conserved site	Conserved Site
C, F [auth D]	IPR046371	Bcl-2, Bcl-2 homology region 1-3	Domain
C, F [auth D]	IPR026298	Bcl-2 family	Family
C, F [auth D]	IPR020717	Apoptosis regulator, Bcl-2, BH1 motif, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C, F [auth D]	: Q16611	B-cell chronic lymphocytic leukemia Nerve Degeneration testicular germ cell tumor malignant colon neoplasm acute myeloid leukemia peripheral neuropathy attention deficit hyperactivity disorder, inattentive type benign colon neoplasm Graves disease ovarian cancer psoriasis autism spectrum disorder colonic neoplasm peripheral nervous system disease testicular cancer

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.