9ZEO | pdb_00009zeo

Competition for different elements of the nucleosome acidic patch yields distinct functional outcomes. VHH 1G1

External Resource: Annotation

Domain Annotation: SCOP2 Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
F [auth D]	SCOP2B Superfamily	Core histone-like	8039341	3001387	SCOP2B (2022-06-29)
J [auth H]	SCOP2B Superfamily	Core histone-like	8039341	3001387	SCOP2B (2022-06-29)
I [auth G]	SCOP2B Superfamily	Core histone-like	8039342	3001387	SCOP2B (2022-06-29)
E [auth C]	SCOP2B Superfamily	Core histone-like	8039342	3001387	SCOP2B (2022-06-29)
D [auth B]	SCOP2B Superfamily	Core histone-like	8070545	3001387	SCOP2B (2022-06-29)
H [auth F]	SCOP2B Superfamily	Core histone-like	8070545	3001387	SCOP2B (2022-06-29)
C [auth A]	SCOP2B Superfamily	Core histone-like	8039340	3001387	SCOP2B (2022-06-29)
G [auth E]	SCOP2B Superfamily	Core histone-like	8039340	3001387	SCOP2B (2022-06-29)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
K	Heavy Chain	IGHV1	-	histone h2b type 1-k \| histone h2a type 1-b/e	SAbDab (2026-04-10)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
F [auth D], J [auth H]	PF00125	Core histone H2A/H2B/H3/H4 domain (Histone)	Core histone H2A/H2B/H3/H4 domain		Domain
E [auth C], I [auth G]	PF16211	C-terminus of histone H2A (Histone_H2A_C)	C-terminus of histone H2A	-	Family
D [auth B], H [auth F]	PF15511	Centromere kinetochore component CENP-T histone fold (CENP-T_C)	Centromere kinetochore component CENP-T histone fold	CENP-T is a family of vertebral kinetochore proteins that associates directly with CENP-W. The N-terminus of CENP-T proteins interacts directly with the Ndc80 complex in the outer kinetochore. Importantly, the CENP-T-W complex does not directly asso ...	CENP-T is a family of vertebral kinetochore proteins that associates directly with CENP-W. The N-terminus of CENP-T proteins interacts directly with the Ndc80 complex in the outer kinetochore. Importantly, the CENP-T-W complex does not directly associate with CENP-A, but with histone H3 in the centromere region. CENP-T and -W form a hetero-tetramer with CENP-S and -X and bind to a ~100 bp region of nucleosome-free DNA forming a nucleosome-like structure. The DNA-CENP-T-W-S-X complex is likely to be associated with histone H3-containing nucleosomes rather than with CENP-nucleosomes. This domain is the C-terminal histone fold domain of CENP-T, which associates with chromatin [2-3].	Domain
C [auth A], G [auth E]	PF00125	Core histone H2A/H2B/H3/H4 domain (Histone)	Core histone H2A/H2B/H3/H4 domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
K	Single-chain antibody (VHH) 1G1	-	-	-
F [auth D], J [auth H]	Histone H2B type 1-K	DNA binding binding nucleic acid binding protein heterodimerization activity protein binding protein dimerization activity structural molecule activity structural constituent of chromatin	biological process involved in interspecies interaction between organisms innate immune response in mucosa response to stimulus immune response response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus immune system process defense response to other organism response to stress innate immune response response to external biotic stimulus biological process involved in interspecies interaction between organisms innate immune response in mucosa response to stimulus immune response response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus immune system process defense response to other organism response to stress innate immune response response to external biotic stimulus mucosal immune response organ or tissue specific immune response humoral immune response antimicrobial humoral response antimicrobial humoral immune response mediated by antimicrobial peptide cellular process disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing defense response to Gram-negative bacterium defense response to bacterium response to bacterium antibacterial humoral response defense response to Gram-positive bacterium	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex protein-DNA complex nucleosome intracellular membraneless organelle chromatin chromosome intracellular organelle organelle membraneless organelle membrane-bounded organelle cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex protein-DNA complex nucleosome intracellular membraneless organelle chromatin chromosome intracellular organelle organelle membraneless organelle membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
E [auth C], I [auth G]	Histone H2A type 1-B/E	DNA binding binding nucleic acid binding protein heterodimerization activity protein binding protein dimerization activity structural molecule activity structural constituent of chromatin	negative regulation of cell population proliferation regulation of biological process cell population proliferation regulation of cellular process regulation of cell population proliferation negative regulation of cellular process biological regulation negative regulation of biological process cellular process cellular component organization cellular component biogenesis cellular component assembly chromatin organization chromatin remodeling negative regulation of cell population proliferation regulation of biological process cell population proliferation regulation of cellular process regulation of cell population proliferation negative regulation of cellular process biological regulation negative regulation of biological process cellular process cellular component organization cellular component biogenesis cellular component assembly chromatin organization chromatin remodeling cellular component organization or biogenesis negative regulation of macromolecule metabolic process regulation of biosynthetic process heterochromatin formation epigenetic regulation of gene expression negative regulation of metabolic process heterochromatin organization regulation of macromolecule 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 negative regulation of gene expression, epigenetic regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process localization protein localization to chromatin protein localization to chromosome protein localization to chromosome, centromeric region protein localization to organelle macromolecule localization protein localization to CENP-A containing chromatin intracellular protein localization	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle protein-containing complex intracellular anatomical structure CENP-A containing chromatin protein-DNA complex intracellular membraneless organelle extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle protein-containing complex intracellular anatomical structure CENP-A containing chromatin protein-DNA complex intracellular membraneless organelle nucleosome chromosome chromatin chromosomal region intracellular organelle chromosome, centromeric core domain CENP-A containing nucleosome membraneless organelle chromosome, centromeric region nucleus intracellular membrane-bounded organelle
D [auth B], H [auth F]	Histone H4	DNA binding binding nucleic acid binding protein heterodimerization activity protein binding protein dimerization activity RNA binding structural molecule activity structural constituent of chromatin	protein-containing complex organization protein-DNA complex assembly cellular component organization protein-DNA complex organization cellular component biogenesis cellular component assembly chromatin organization protein-containing complex assembly chromatin remodeling cellular process cellular component organization or biogenesis nucleosome assembly nucleosome organization organelle organization protein-containing complex organization protein-DNA complex assembly cellular component organization protein-DNA complex organization cellular component biogenesis cellular component assembly chromatin organization protein-containing complex assembly chromatin remodeling cellular process cellular component organization or biogenesis nucleosome assembly nucleosome organization organelle organization telomere organization chromosome organization localization protein localization to chromatin protein localization to chromosome protein localization to chromosome, centromeric region protein localization to organelle macromolecule localization protein localization to CENP-A containing chromatin intracellular protein localization multicellular organismal process regulation of cellular process regulation of developmental process cellular developmental process regulation of megakaryocyte differentiation negative regulation of biological process cell development megakaryocyte differentiation regulation of cell differentiation regulation of cell development multicellular organism development negative regulation of megakaryocyte differentiation cell differentiation negative regulation of cellular process anatomical structure development negative regulation of cell differentiation regulation of immune system process regulation of multicellular organismal process developmental process regulation of biological process regulation of multicellular organismal development negative regulation of developmental process hemopoiesis regulation of myeloid cell differentiation biological regulation negative regulation of myeloid cell differentiation myeloid cell differentiation immune system process regulation of hemopoiesis	cellular anatomical structure membrane extracellular region extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle protein-containing complex intracellular anatomical structure CENP-A containing chromatin protein-DNA complex cellular anatomical structure membrane extracellular region extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle protein-containing complex intracellular anatomical structure CENP-A containing chromatin protein-DNA complex intracellular membraneless organelle nucleosome chromosome chromatin chromosomal region intracellular organelle chromosome, centromeric core domain CENP-A containing nucleosome membraneless organelle chromosome, centromeric region chromosome, telomeric region nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
C [auth A], G [auth E]	Histone H3.1	DNA binding binding nucleic acid binding cell adhesion molecule binding cadherin binding protein binding protein heterodimerization activity protein dimerization activity structural molecule activity structural constituent of chromatin	protein-containing complex organization protein-DNA complex assembly cellular component organization protein-DNA complex organization cellular component biogenesis cellular component assembly chromatin organization protein-containing complex assembly chromatin remodeling cellular process cellular component organization or biogenesis nucleosome assembly nucleosome organization organelle organization protein-containing complex organization protein-DNA complex assembly cellular component organization protein-DNA complex organization cellular component biogenesis cellular component assembly chromatin organization protein-containing complex assembly chromatin remodeling cellular process cellular component organization or biogenesis nucleosome assembly nucleosome organization organelle organization telomere organization chromosome organization regulation of biosynthetic process regulation of biological process regulation of cellular process epigenetic regulation of gene expression biological regulation regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process	cellular anatomical structure membrane extracellular region extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle protein-containing complex intracellular anatomical structure protein-DNA complex nucleosome cellular anatomical structure membrane extracellular region extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle protein-containing complex intracellular anatomical structure protein-DNA complex nucleosome intracellular membraneless organelle chromatin chromosome intracellular organelle membraneless organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
B [auth J]	DNA Lagging Strand	-	-	-
A [auth I]	DNA Tracking Strand	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
F [auth D], J [auth H]	IPR009072	Histone-fold	Homologous Superfamily
F [auth D], J [auth H]	IPR000558	Histone H2B	Family
F [auth D], J [auth H]	IPR007125	Core Histone H2A/H2B/H3 domain	Domain
F [auth D], J [auth H]	IPR055333	Histone H2B, conserved site	Conserved Site
E [auth C], I [auth G]	IPR009072	Histone-fold	Homologous Superfamily
E [auth C], I [auth G]	IPR002119	Histone H2A	Family
E [auth C], I [auth G]	IPR007125	Core Histone H2A/H2B/H3 domain	Domain
E [auth C], I [auth G]	IPR032454	Histone H2A, C-terminal domain	Domain
E [auth C], I [auth G]	IPR032458	Histone H2A conserved site	Conserved Site
D [auth B], H [auth F]	IPR009072	Histone-fold	Homologous Superfamily
D [auth B], H [auth F]	IPR035425	CENP-T/Histone H4, histone fold	Domain
D [auth B], H [auth F]	IPR001951	Histone H4	Family
D [auth B], H [auth F]	IPR019809	Histone H4, conserved site	Conserved Site
D [auth B], H [auth F]	IPR004823	TATA box binding protein associated factor (TAF), histone-like fold domain	Domain
C [auth A], G [auth E]	IPR009072	Histone-fold	Homologous Superfamily
C [auth A], G [auth E]	IPR007125	Core Histone H2A/H2B/H3 domain	Domain
C [auth A], G [auth E]	IPR000164	Histone H3/CENP-A	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
F [auth D], J [auth H]	Pharos: O60814	breast carcinoma autism spectrum disorder endogenous depression Mammary Neoplasms, Human breast cancer
E [auth C], I [auth G]	Pharos: P04908	juvenile idiopathic arthritis pituitary cancer acute myeloid leukemia autism spectrum disorder hypertensive disorder lung adenocarcinoma medulloblastoma ovarian cancer psoriasis allergic rhinitis breast cancer invasive ductal breast carcinoma Juvenile psoriatic arthritis lung cancer non-small cell lung carcinoma juvenile idiopathic arthritis pituitary cancer acute myeloid leukemia autism spectrum disorder hypertensive disorder lung adenocarcinoma medulloblastoma ovarian cancer psoriasis allergic rhinitis breast cancer invasive ductal breast carcinoma Juvenile psoriatic arthritis lung cancer non-small cell lung carcinoma pancreatic intraductal papillary-mucinous carcinoma squamous cell lung carcinoma atypical teratoid rhabdoid tumor ductal breast carcinoma in situ lung carcinoma osteoarthritis
D [auth B], H [auth F]	Pharos: P62805	lung carcinoma Malignant neoplasm of breast non-small cell lung carcinoma Pick disease acute myeloid leukemia squamous cell lung carcinoma atypical teratoid rhabdoid tumor breast carcinoma ductal breast carcinoma in situ exocrine pancreatic carcinoma hepatocellular carcinoma lung adenocarcinoma malignant colon neoplasm malignant pancreatic neoplasm osteoarthritis lung carcinoma Malignant neoplasm of breast non-small cell lung carcinoma Pick disease acute myeloid leukemia squamous cell lung carcinoma atypical teratoid rhabdoid tumor breast carcinoma ductal breast carcinoma in situ exocrine pancreatic carcinoma hepatocellular carcinoma lung adenocarcinoma malignant colon neoplasm malignant pancreatic neoplasm osteoarthritis pilocytic astrocytoma allergic rhinitis ulcerative colitis autism spectrum disorder cystic fibrosis endogenous depression glioblastoma hypertensive disorder lung cancer malignant mesothelioma multiple sclerosis osteosarcoma psoriasis astrocytic tumor breast cancer diabetes mellitus endometriosis gout invasive ductal breast carcinoma
C [auth A], G [auth E]	Pharos: P68431	lung carcinoma glioblastoma glioma large cell medulloblastoma malignant mesothelioma non-small cell lung carcinoma ovarian cancer allergic rhinitis psoriasis autism spectrum disorder tuberculosis cutaneous lupus erythematosus ependymoma gastric carcinoma Glioma of Brain, Familial lung carcinoma glioblastoma glioma large cell medulloblastoma malignant mesothelioma non-small cell lung carcinoma ovarian cancer allergic rhinitis psoriasis autism spectrum disorder tuberculosis cutaneous lupus erythematosus ependymoma gastric carcinoma Glioma of Brain, Familial hypertensive disorder lung adenocarcinoma malignant colon neoplasm malignant pancreatic neoplasm osteoarthritis pancreatic intraductal papillary-mucinous carcinoma astrocytoma (excluding glioblastoma) spina bifida breast cancer cystic fibrosis exocrine pancreatic carcinoma glioma susceptibility 1 invasive ductal breast carcinoma lung cancer malignant glioma medulloblastoma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm atypical teratoid rhabdoid tumor subependymoma breast carcinoma ductal breast carcinoma in situ gastric cancer hepatocellular carcinoma

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.