پروتئین ترمیم کننده دیانای مکمل سلولهای ایکسپی-جی (انگلیسی: DNA repair protein complementing XP-G cells) یک پروتئین است که در انسان توسط ژن «ERCC5» کُدگذاری میشود.[4][5]
اطلاعات اجمالی ساختارهای موجود, PDB ...
بستن
این پروتئین نقش مهمی در فرایند ترمیم گسیختگی نوکلئوتید و آسیبهای وارده به دیانای در اثر اشعهٔ ماورا بنفش خورشید دارد.
جهش در ژن «XPA» سبب بروز بیماری نادر گزرودرما پیگمنتوزوم میشود که طی آن فرد در صورت مواجهه با اشعهٔ ماورا بنفش نور خورشید (حتی در سایه یا درون اتاق) دچار سرطان پوست میشود. جهش در این ژن همچنین میتواند منجر به خمیدگی مفاصل[6] و سندرم کاکین یا سندرم مغزی-چشمی-چهرهای-اسکلتی نوزادی کُشنده شود.[7]
دیده شده در موشها، جهش این ژن سبب کاشکسی، پوکی استخوان، آسیبهای کبدی-مغزی و سالخوردگی میشود.[7]
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Drury S, Boustred C, Tekman M, Stanescu H, Kleta R, Lench N, Chitty LS, Scott RH (July 2014). "A novel homozygous ERCC5 truncating mutation in a family with prenatal arthrogryposis--further evidence of genotype-phenotype correlation". American Journal of Medical Genetics. Part A. 164A (7): 1777–83. doi:10.1002/ajmg.a.36506. PMID 24700531. S2CID 8023991.
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- Matsunaga T, Mu D, Park CH, Reardon JT, Sancar A (September 1995). "Human DNA repair excision nuclease. Analysis of the roles of the subunits involved in dual incisions by using anti-XPG and anti-ERCC1 antibodies". The Journal of Biological Chemistry. 270 (35): 20862–9. doi:10.1074/jbc.270.35.20862. PMID 7657672.
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