Mhaske Aditi, Dileep K V, Kumar Mukesh, Poojary Mukta, Pandhare Kavita, Zhang Kam Y J, Scaria Vinod, Binukumar B K
CSIR Institute of Genomics and Integrative Biology, Mathura Road, Delhi 110 025, India.
Laboratory for Structural Bioinformatics, Center for Biosystems Dynamics Research, RIKEN, 1-7-22 Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan.
Comput Struct Biotechnol J. 2020 Sep 2;18:2347-2356. doi: 10.1016/j.csbj.2020.08.021. eCollection 2020.
ATP7A is a critical copper transporter involved in Menkes Disease, Occipital horn Syndrome and X-linked distal spinal muscular atrophy type 3 which are X linked genetic disorders. These are rare diseases and their genetic epidemiology of the diseases is unknown. A number of genetic variants in the genes have been reported in published literature as well as databases, however, understanding the pathogenicity of variants and genetic epidemiology requires the data to be compiled in a unified format. To this end, we systematically compiled genetic variants from published literature and datasets. Each of the variants were systematically evaluated for evidences with respect to their pathogenicity and classified as per the American College of Medical Genetics and the Association of Molecular Pathologists (ACMG-AMP) guidelines into Pathogenic, Likely Pathogenic, Benign, Likely Benign and Variants of Uncertain Significance. Additional integrative analysis of population genomic datasets provides insights into the genetic epidemiology of the disease through estimation of carrier frequencies in global populations. To deliver a mechanistic explanation for the pathogenicity of selected variants, we also performed molecular modeling studies. Our modeling studies concluded that the small structural distortions observed in the local structures of the protein may lead to the destabilization of the global structure. To the best of our knowledge, ATP7A Clinical Genetics Resource is one of the most comprehensive compendium of variants in the gene providing clinically relevant annotations in gene.
ATP7A是一种关键的铜转运蛋白,与门克斯病、枕角综合征和X连锁远端脊髓性肌萎缩症3型有关,这些都是X连锁遗传病。这些是罕见疾病,其疾病的遗传流行病学尚不清楚。已发表的文献以及数据库中报告了该基因中的一些遗传变异,然而,了解变异的致病性和遗传流行病学需要将数据以统一格式汇编。为此,我们系统地汇编了来自已发表文献和数据集的遗传变异。对每个变异进行了系统的致病性证据评估,并根据美国医学遗传学学院和分子病理学家协会(ACMG-AMP)指南分类为致病性、可能致病性、良性、可能良性和意义未明的变异。对群体基因组数据集进行的额外综合分析通过估计全球人群中的携带者频率,为该疾病的遗传流行病学提供了见解。为了对选定变异的致病性给出机制解释,我们还进行了分子建模研究。我们的建模研究得出结论,在蛋白质局部结构中观察到的小结构畸变可能导致整体结构的不稳定。据我们所知,ATP7A临床遗传学资源是该基因中最全面的变异汇编之一,提供了该基因的临床相关注释。