CRYBA4 Gene Summary [Human]

Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Beta-crystallins, the most heterogeneous, differ by the presence of the C-terminal extension (present in the basic group, none in the acidic group). Beta-crystallins form aggregates of different sizes and are able to self-associate to form dimers or to form heterodimers with other beta-crystallins. This gene, a beta acidic group member, is part of a gene cluster with beta-B1, beta-B2, and beta-B3. [provided by RefSeq, Jul 2008]

Details

Type
Protein Coding
Official Symbol
CRYBA4
Official Name
crystallin beta A4 [Source:HGNC Symbol;Acc:HGNC:2396]
Ensembl ID
ENSG00000196431
Bio databases IDs NCBI: 1413 Ensembl: ENSG00000196431
Aliases crystallin beta A4
Synonyms crystallin beta A4, crystallin, beta A4, crystallin β A4, crystallin, β A4, CTRCT23, CYRBA4, MCOPCT4, β a4 crystallin
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 CRYBA4 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • structural constituent of eye lens
  • protein binding
  • identical protein binding
  • Beta/Gamma crystallin

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • systemic lupus erythematosus
  • lamellar cataract type 23
  • high myopia
  • nuclear cataract 23 with microcornea
  • multiple types cataract 23
regulated by

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Unknown

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human CRYBA4 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • camera-type eye development
  • lens development in camera-type eye
  • visual perception

Molecular Function

What the gene product does at the molecular level
  • identical protein binding
  • protein binding
  • structural constituent of eye lens

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