CRYAA

Name

crystallin alpha A

Type

protein-coding

Position

43,169,008–43,172,810 (+)

Aliases

CRYA1, CTRCT9, HSPB4

Ensembl

ENSG00000160202

RefSeq RNA

NM_000394.4, NM_001363766.1

RefSeq protein

NP_000385.1, NP_001350695.1

Mammalian lens crystallins are divided into alpha, beta, and gamma families. 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 (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. The encoded protein has been identified as a moonlighting protein based on its ability to perform mechanistically distinct functions. 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, Jan 2014].

via MyGene.info

Gene · Ensembl

crystallin alpha A

Symbol

CRYAA

Biotype

Protein coding

Organism

Homo sapiens

Location

21:43,169,008-43,172,810

Strand

Forward (+)

Assembly

GRCh38

Wikidata facts

Instance of

gene

via Wikidata · CC0