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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, encodes two proteins (crystallin, beta A3 and crystallin, beta A1) from a single mRNA, the latter protein is 17 aa shorter than crystallin, beta A3 and is generated by use of an alternate translation initiation site. Deletion of exons 3 and 4 causes the autosomal dominant disease 'zonular cataract with sutural opacities'. [provided by RefSeq, Jul 2008]
CRYBA1 (Crystallin Beta A1) is a Protein Coding gene. Diseases associated with CRYBA1 include Cataract 10, Multiple Types and Early-Onset Sutural Cataract. Gene Ontology (GO) annotations related to this gene include protein homodimerization activity and structural constituent of eye lens. An important paralog of this gene is CRYBA4.
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0003674 | molecular_function | ND | -- |
GO:0005212 | structural constituent of eye lens | IBA | 21873635 |
GO:0005515 | protein binding | IPI | 17046756 |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0005634 | nucleus | ISS,IEA | -- |
GO:0005737 | cytoplasm | IEA,ISS | -- |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0001818 | negative regulation of cytokine production | IEA | -- |
GO:0002088 | lens development in camera-type eye | IBA | 21873635 |
GO:0007601 | visual perception | IBA,NAS | 8999933 |
GO:0014067 | negative regulation of phosphatidylinositol 3-kinase signaling | IEA | -- |
GO:0032007 | negative regulation of TOR signaling | IEA | -- |
ExUns: | 1 | ^ | 2 | ^ | 3 | ^ | 4 | ^ | 5 | ^ | 6a | · | 6b |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SP1: | |||||||||||||
SP2: | - |
This gene was present in the common ancestor of chordates.
Organism | Taxonomy | Gene | Similarity | Type | Details |
---|---|---|---|---|---|
chimpanzee (Pan troglodytes) |
Mammalia | CRYBA1 33 32 |
|
OneToOne | |
dog (Canis familiaris) |
Mammalia | CRYBA3 33 |
|
OneToOne | |
CRYBA1 32 |
|
||||
rat (Rattus norvegicus) |
Mammalia | Cryba1 32 |
|
||
cow (Bos Taurus) |
Mammalia | CRYBA1 33 32 |
|
OneToOne | |
mouse (Mus musculus) |
Mammalia | Cryba1 17 33 32 |
|
||
oppossum (Monodelphis domestica) |
Mammalia | CRYBA1 33 |
|
OneToOne | |
platypus (Ornithorhynchus anatinus) |
Mammalia | CRYBA1 33 |
|
OneToOne | |
chicken (Gallus gallus) |
Aves | CRYBA1 33 32 |
|
OneToOne | |
lizard (Anolis carolinensis) |
Reptilia | CRYBA1 33 |
|
OneToOne | |
tropical clawed frog (Silurana tropicalis) |
Amphibia | cryba1 32 |
|
||
Str.11862 32 |
|
||||
African clawed frog (Xenopus laevis) |
Amphibia | Xl.28806 32 |
|
||
zebrafish (Danio rerio) |
Actinopterygii | cryba1a 33 32 |
|
OneToOne |
SNP ID | Clin | Chr 17 pos | Variation | AA Info | Type |
---|---|---|---|---|---|
rs117757092 | uncertain-significance, benign, Cataract, congenital zonular, with sutural opacities, not specified | 29,253,757(+) | G/A | coding_sequence_variant, missense_variant | |
rs1264025914 | pathogenic, Cataract, congenital zonular, with sutural opacities, Inborn genetic diseases | 29,250,301(+) | G/A/T | splice_donor_variant | |
rs142631461 | benign, not specified, Cataract, congenital zonular, with sutural opacities | 29,249,184(+) | C/T | coding_sequence_variant, missense_variant | |
rs1555547008 | likely-pathogenic, Cataract, congenital zonular, with sutural opacities | 29,254,227(+) | TATCGTGGGTATC/TATC | coding_sequence_variant, inframe_deletion | |
rs1567671947 | pathogenic, Cataract, congenital zonular, with sutural opacities | 29,254,308(+) | CA/ | coding_sequence_variant, frameshift |
Variant ID | Type | Subtype | PubMed ID |
---|---|---|---|
nsv1116210 | CNV | deletion | 24896259 |
nsv953873 | CNV | duplication | 24416366 |
Disorder | Aliases | PubMed IDs |
---|---|---|
cataract 10, multiple types |
|
|
early-onset sutural cataract |
|
|
cataract 16, multiple types |
|
|
early-onset lamellar cataract |
|
|
early-onset nuclear cataract |
|
|