Chiappelli Francesco
Dental Group of Sherman Oaks, Sherman Oaks, California-91403.
Bioinformation. 2025 Feb 28;21(2):169-172. doi: 10.6026/973206300210169. eCollection 2025.
Traditional protein biochemistry defends the intimate interdependence between protein function and structure, the latter being consisting of four distinct levels: premary sstructure: the sequence of its constituent amino acids linked by peptides bonds - the polypeptide chain; ssecondary structure: localized folding patterns (, a α-helix, β-sheets) of the polypeptide chain held by hydrogen bonds between amino acid backbones; tertiary structure: three-dimensional folding of the protein held by interactions between amino acid side chains mediated by disulfide bridges, hydrogen bonds, ionic bonds and hydrophobic interactions; and quaternary structure: attachment of subunits, when appropriate, by means of similar chemical interactions to form a functional protein complex. Research evidence in the last decade has described intrinsically disordered proteins (IDPs) as polypeptides that lack a well-defined three/four-dimensional structure under physiological conditions, appear structurally unstable and manifest in a dynamic set of possible conformations. IDPs are a major component of the "dark" proteome, genome protein products not yet characterized through experimental structure determination and existing homology modeling. Dark proteome in general and IDPs specifically define and characterize the novel disorder - function paradigm, which critically mediate and modulate key cellular organelles and pathways and influence physiopathological processes from aging to chronic diseases and pathogen infection. The role of the disorder-function paradigm in the immunome and the inflammasome in general and specifically in the process of chronic metabolic inflammation observed in aging - , inflammAging - could be elucidated through diverse AI platforms.
传统蛋白质生物化学支持蛋白质功能与结构之间的紧密相互依存关系,蛋白质结构由四个不同层次组成:一级结构:由肽键连接的组成氨基酸序列——多肽链;二级结构:多肽链通过氨基酸主链之间的氢键形成的局部折叠模式(如α-螺旋、β-折叠);三级结构:蛋白质通过二硫键、氢键、离子键和疏水相互作用介导的氨基酸侧链间相互作用形成的三维折叠;四级结构:在适当情况下,亚基通过类似化学相互作用连接形成功能性蛋白质复合物。过去十年的研究证据将内在无序蛋白(IDP)描述为在生理条件下缺乏明确三维/四维结构、结构看似不稳定且表现为一组动态可能构象的多肽。IDP是“暗”蛋白质组的主要组成部分,即尚未通过实验结构测定和现有同源建模进行表征的基因组蛋白质产物。一般的暗蛋白质组,特别是IDP,定义并表征了新的无序-功能范式,该范式关键地介导和调节关键细胞器及通路,并影响从衰老到慢性疾病和病原体感染等生理病理过程。无序-功能范式在免疫组和炎性小体中的作用,尤其是在衰老过程中观察到的慢性代谢炎症过程(炎性衰老)中,可以通过多种人工智能平台来阐明。