Cristalinas

Cristalinas is a term used in Spanish-language ophthalmology and biology to refer to crystallin proteins of the vertebrate eye lens. Crystallins are the principal, water-soluble proteins that comprise the majority of lens protein content. They are essential for maintaining the lens’s transparency and its high refractive index, which enables proper focusing of light onto the retina. In English-language literature, crystallin is the standard term, but cristalinas is commonly used in Spanish texts.

There are three main crystallin families: alpha, beta, and gamma. Alpha-crystallins (CRYAA and CRYAB) act as molecular chaperones, helping to prevent aggregation of other lens proteins. Beta- and gamma-crystallins are structural proteins that assemble into stable, high-density complexes to form the lens core.

Crystallins are encoded by multi-gene families and are expressed predominantly in lens fiber cells during development. Mutations in crystallin genes or age-related modifications can reduce solubility and promote aggregation, leading to cataracts.

Crystallins are widely used as models for studying protein folding, stability, and aging in the lens, and ongoing research explores their roles in lens biology, cataract formation, and potential therapeutic approaches.