CBX3 Gene Summary [Human]

At the nuclear envelope, the nuclear lamina and heterochromatin are adjacent to the inner nuclear membrane. The protein encoded by this gene binds DNA and is a component of heterochromatin. This protein also can bind lamin B receptor, an integral membrane protein found in the inner nuclear membrane. The dual binding functions of the encoded protein may explain the association of heterochromatin with the inner nuclear membrane. This protein binds histone H3 tails methylated at Lys-9 sites. This protein is also recruited to sites of ultraviolet-induced DNA damage and double-strand breaks. Two transcript variants encoding the same protein but differing in the 5' UTR, have been found for this gene.[provided by RefSeq, Mar 2011]

Details

Type
Protein Coding
Official Symbol
CBX3
Official Name
chromobox 3 [Source:HGNC Symbol;Acc:HGNC:1553]
Ensembl ID
ENSG00000122565
Bio databases IDs NCBI: 11335 Ensembl: ENSG00000122565
Aliases chromobox 3, HP1 gamma homolog (Drosophila)
Synonyms chromobox 3, HECH, HP1g, HP1-GAMMA, HP1Hs-gamma, HP1Hs-γ, HP1-γ, M32
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human CBX3 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • Chromatin organization modifier domain
  • transcription regulator
  • nucleic acid binding
  • enzyme binding
  • transcription factor binding
  • protein domain specific binding
  • protein binding
  • sequence-specific DNA binding
  • identical protein binding
  • Chromo shadow domain
  • CHROMO (CHRromatin Organization Modifier) domains and chromo shadow domains
  • serine-rich region
  • double-stranded DNA binding
  • hinge domain
  • Chromo (CHRromatin organization MOdifier) domain

Pathways

Biological processes and signaling networks where the CBX3 gene in human plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • neoplasia
  • small cell lung cancer
  • glioblastoma
  • glioblastoma cancer
  • tumorigenesis
  • breast cancer
  • diffuse large B-cell lymphoma
  • B-cell non-Hodgkin disease
  • mature B-cell neoplasia
  • organismal death
regulated by
role in cell
  • apoptosis
  • expression in
  • proliferation
  • phosphorylation in
  • migration
  • differentiation
  • trimethylation in
  • invasion by
  • accumulation in
  • palbociclib sensitivity

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Nucleus
  • nuclear fraction
  • heterochromatin
  • spindle apparatus
  • Cytoplasm
  • chromosome
  • nucleoplasm
  • nucleoli
  • nuclear envelope
  • nuclear speckles
  • mitotic spindle
  • centromeres
  • telomeres
  • chromatin
  • pericentric heterochromatin
  • heterochromatin fraction

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human CBX3 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • chromatin remodeling
  • rhythmic process
  • negative regulation of transcription, DNA-dependent
  • heterochromatin assembly
  • response to DNA damage stimulus

Cellular Component

Where in the cell the gene product is active
  • condensed chromosome, centromeric region
  • chromosome, centromeric region
  • chromatin
  • centromeric heterochromatin
  • nucleoplasm
  • nuclear envelope
  • chromosome, telomeric region
  • nucleus
  • heterochromatin
  • nuclear inner membrane
  • euchromatin
  • spindle

Molecular Function

What the gene product does at the molecular level
  • transcription cofactor binding
  • protein domain specific binding
  • identical protein binding
  • protein binding
  • methylated histone residue binding
  • chromatin binding
  • enzyme binding

Gene-Specific Assays for Results You Can Trust

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