{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Although none of the provided abstracts examine CRYBG2 directly, several studies focusing on crystallin proteins shed light on the presumed role of CRYBG2 as a member of the beta‐/gamma‐crystallin superfamily. Crystallins are the major soluble proteins that account for the high refractive index and transparency of the vertebrate lens, and they also function as molecular chaperones to maintain cytoplasmic order and prevent protein aggregation. Mutations in crystallin genes, as illustrated by studies on a closely related beta‐crystallin (CRYBA1) mutation that leads to decreased expression and mislocalization causing congenital cataracts, underscore how even subtle alterations can disrupt lens homeostasis and optical clarity."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " In a broader context, reviews of crystallin organization indicate that these proteins are long‐lived and play dual roles in both optical performance and cellular stress resistance within the lens"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": ", while evolutionary studies in vertebrates emphasize that crystallins may have been co‐opted from ancestral proteins with chaperoning functions to meet the unique demands of lens biology."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": " By inference, CRYBG2 likely contributes similarly to lens architecture and transparency by ensuring proper protein folding and stability; any alteration in its expression or structure could predispose to lens opacity and cataract formation.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Dan Li, Qinghe Jing, Yongxiang Jiang "}, {"type": "b", "children": [{"type": "t", "text": "The identification and characterization of the p.G91 deletion in CRYBA1 in a Chinese family with congenital cataracts."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "BMC Med Genet (2019)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1186/s12881-019-0882-z"}], "href": "https://doi.org/10.1186/s12881-019-0882-z"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "31488069"}], "href": "https://pubmed.ncbi.nlm.nih.gov/31488069"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Graeme Wistow "}, {"type": "b", "children": [{"type": "t", "text": "The human crystallin gene families."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Hum Genomics (2012)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1186/1479-7364-6-26"}], "href": "https://doi.org/10.1186/1479-7364-6-26"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "23199295"}], "href": "https://pubmed.ncbi.nlm.nih.gov/23199295"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Christine Slingsby, Graeme J Wistow "}, {"type": "b", "children": [{"type": "t", "text": "Functions of crystallins in and out of lens: roles in elongated and post-mitotic cells."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Prog Biophys Mol Biol (2014)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.pbiomolbio.2014.02.006"}], "href": "https://doi.org/10.1016/j.pbiomolbio.2014.02.006"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "24582830"}], "href": "https://pubmed.ncbi.nlm.nih.gov/24582830"}]}]}]}