Bos taurus Gene: CRYAA
InnateDB Gene IDBG-639603.3
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol CRYAA
Gene Name Alpha-crystallin A chain Alpha-crystallin A chain, short form
Species Bos taurus
Ensembl Gene ENSBTAG00000003134
Encoded Proteins
Alpha-crystallin A chainAlpha-crystallin A chain, short form
Protein Structure
Useful resources Stemformatics EHFPI ImmGen
Entrez Gene
Summary This gene does not have any Entrez summary - the following is the summary from its human ortholog ENSG00000160202:
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. Alpha crystallins are composed of two gene products: alpha-A and alpha-B, for acidic and basic, respectively. Alpha crystallins can be induced by heat shock and are members of the small heat shock protein (sHSP also known as the HSP20) family. They act as molecular chaperones although they do not renature proteins and release them in the fashion of a true chaperone; instead they hold them in large soluble aggregates. Post-translational modifications decrease the ability to chaperone. These heterogeneous aggregates consist of 30-40 subunits; the alpha-A and alpha-B subunits have a 3:1 ratio, respectively. Two additional functions of alpha crystallins are an autokinase activity and participation in the intracellular architecture. Alpha-A and alpha-B gene products are differentially expressed; alpha-A is preferentially restricted to the lens and alpha-B is expressed widely in many tissues and organs. Defects in this gene cause autosomal dominant congenital cataract (ADCC). [provided by RefSeq, Jul 2008]
Gene Information
Type Protein coding
Genomic Location Chromosome 1:144887619-144890448
Strand Forward strand
ENSBTAT00000004073 ENSBTAP00000004073
Number of Interactions This gene and/or its encoded proteins are associated with 0 experimentally validated interaction(s) in this database.
They are also associated with 10 interaction(s) predicted by orthology.
Predicted by orthology
Total 10 [view]
Gene Ontology

Molecular Function
Accession GO Term
GO:0005212 structural constituent of eye lens
GO:0005515 protein binding
GO:0046872 metal ion binding
GO:0051082 unfolded protein binding
Biological Process
GO:0001666 response to hypoxia
GO:0001934 positive regulation of protein phosphorylation
GO:0002088 lens development in camera-type eye
GO:0002089 lens morphogenesis in camera-type eye
GO:0006915 apoptotic process
GO:0007005 mitochondrion organization
GO:0007015 actin filament organization
GO:0007017 microtubule-based process
GO:0007021 tubulin complex assembly
GO:0010629 negative regulation of gene expression
GO:0030307 positive regulation of cell growth
GO:0042542 response to hydrogen peroxide
GO:0043010 camera-type eye development
GO:0043066 negative regulation of apoptotic process
GO:0043154 negative regulation of cysteine-type endopeptidase activity involved in apoptotic process
GO:0048596 embryonic camera-type eye morphogenesis
GO:0060561 apoptotic process involved in morphogenesis
GO:0070141 response to UV-A
GO:0070309 lens fiber cell morphogenesis
Cellular Component
GO:0005634 nucleus
GO:0005737 cytoplasm
Homo sapiens
Mus musculus
Gene ID
Gene Order
Pathway Predictions based on Human Orthology Data
Protein processing in endoplasmic reticulum pathway
Protein processing in endoplasmic reticulum pathway
UniProt Splice Variant
Entrez Gene
UniGene Bt.397
RefSeq NM_174289 XM_005202005
RNA Seq Atlas