CRYBB1
Sign in to saveAlso known as CATCN3, CTRCT17, crystallin beta B1
Beta-crystallin B1 is a protein that in humans is encoded by the CRYBB1 gene. Variants in CRYBB1 are associated with autosomal dominant congenital cataract.
Gene data
CRYBB1- Name
- crystallin beta B1
- Type
- protein-coding
- Position
- 26,599,277–26,619,630 (−)
- Aliases
- CATCN3, CTRCT17
- Ensembl
- ENSG00000100122
- RefSeq RNA
- NM_001887.4, XM_011529899.4, XM_054325113.1
- RefSeq protein
- NP_001878.1, XP_011528201.1, XP_054181088.1
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 basic group member, undergoes extensive cleavage at its N-terminal extension during lens maturation. It is also a member of a gene cluster with beta-A4, beta-B2, and beta-B3. [provided by RefSeq, Jul 2008].
Gene Ontology
Biological process
Molecular function
via MyGene.info
Gene · Ensembl
crystallin beta B1
- Symbol
- CRYBB1
- Biotype
- Protein coding
- Organism
- Homo sapiens
- Location
- 22:26,599,277-26,619,630
- Strand
- Reverse (−)
- Assembly
- GRCh38
via Ensembl · EMBL-EBI
Wikidata facts
- Image
- Protein CRYBB1 PDB 1oki.png
Show 5 more facts
- HomoloGene ID
- 1423
- genomic end
- 26618027
- exact match
- identifiers.org/ncbigene/1414
- genomic start
- 26995242
- cytogenetic location
- 22q12.1
Sources (4)
via Wikidata · CC0
~1 min read
Article
3 sectionsContents
- References
- External links
- Further reading
Beta-crystallin B1 is a protein that in humans is encoded by the CRYBB1 gene. Variants in CRYBB1 are associated with autosomal dominant congenital cataract.
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.