disease:Crystallins do not turn over as the lens ages, providing ample opportunity for post-translational modifications or oxidations. These modifications may change crystallin solubility properties and favor senile cataract.,disease:Defects in CRYBB3 are the cause of autosomal recessive congenital nuclear cataract 2 (CATCN2) [MIM:609741]. CATCN2 is a form of non-syndromic congenital cataract. Non-syndromic congenital cataracts vary markedly in severity and morphology, affecting the nuclear, cortical, polar, or subcapsular parts of the lens or, in severe cases, the entire lens, with a variety of types of opacity. They are one of the major causes of vision loss in children worldwide and are responsible for approximately one third of blindness in infants. Congenital cataracts can lead to permanent blindness by interfering with the sharp focus of light on the retina during critical developmental intervals.,domain:Has a two-domain beta-structure, folded into four very similar Greek key motifs.,function:Crystallins are the dominant structural components of the vertebrate eye lens.,mass spectrometry: PubMed:8999933,similarity:Belongs to the beta/gamma-crystallin family.,similarity:Contains 4 beta/gamma crystallin 'Greek key' domains.,subunit:Homo/heterodimer, or complexes of higher order. The structure of beta-crystallin oligomers seems to be stabilized through interactions between the N-terminal arms.,
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