{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Keratin‐associated protein 2-2 (KRTAP2-2) is a member of a family of structural proteins that play a crucial role in the formation and maintenance of hair and related fiber characteristics. In general, KRTAPs provide a disulfide‐rich matrix that interlinks with keratin intermediate filaments, thereby contributing to the mechanical strength, resilience, and fine structure of the hair shaft. Emerging evidence from proteomic studies in humans has noted the identification of several keratin-associated proteins on specific chromosomes, highlighting candidates that had been “missing” in earlier protein inventories and that may have important functions in cell structure and signaling (6). In addition, gene network analyses in studies of skin diseases—for example, in alopecia areata—suggest that KRTAPs, together with keratin proteins, participate in epidermal development and influence hair follicle morphogenesis; disruptions in their expression may contribute to aberrant hair cycle regulation and inflammatory responses in the scalp (7). Complementary studies in animal models examining wool quality traits have underscored the broader significance of genes involved in hair follicle development, implying that variation in KRTAP expression, including that of KRTAP2-2, could modulate properties such as fiber diameter and crimp (5). Collectively, these findings support a role for KRTAP2-2 in determining the structural and functional properties of hair, making it a potential target for genetic screening and therapeutic intervention in conditions affecting hair development and skin integrity (6,7).\n "}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "t", "text": "\n References:."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "7"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Jia Pei Lim, Sukanya Shyamasundar, Jayantha Gunaratne, et al. 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