Crystallin gamma N （CRYGN） is a member of the Crystallins family. Crystallins are the main proteins of the vertebrate eye lens， where they preserve the transparency and refractive index of the lens. CRYGN is unique in the way that it has both beta and gamma crystallin protein motifs. The CRYGN is differentially controlled after early development， and is involved in cataract creation due to either age-related protein degradation or genetic mutation.
