狼F8基因中的furin序列的古代起源
Joshua I Siner1,2, Shannon Barber-Meyer3,4, Benjamin J Samelson-Jones1,5
1Raymond G. Perelman Center for Cellular and Molecular Therapeutics at the Children's Hospital of Philadelphia, Philadelphia, PA.
Open veterinary journal
|October 2, 2025
概括
狗的凝血因子VIII (FVIII) 蛋白质具有独特的H1645序列,与其他哺乳动物不同. 这种在灰狼和猎犬中发现的H1645变种,可能是在家养狗之前进化出来的,并改善了FVIII活动.
科学领域:
- 进化生物学 进化生物学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 狗的凝血因子VIII (FVIII) 在其B域中表现出独特的H1645序列,与人类和其他哺乳动物中发现的R1645序列不同.
- 与R1645.5相比,这种特定于狗的H1645变体与改善的FVIII分泌和生物活性有关.
研究的目的:
- 调查狗FVIII.H1645变异的进化起源.
- 追踪H1645变种在犬科及其更广泛的哺乳动物亲属中的出现.
主要方法:
- 在灰狼 (Canis lupus),大猩猩 (C. latrans) 和各种家庭犬种 (C. lupus familiaris) 中测序FVIII基因的B域.
- 对狗FVIII序列的比较分析与其他食肉动物和形动物物种的公开可用的基因组数据进行比较.
- 遗传学分析以确定H1645变种出现的时间.
主要成果:
- H1645变种在灰狼,大猩猩和多种家养犬种中得到了一致的鉴定.
- 其他所有被检查的食肉类和形动物分类的成员都拥有祖先的R1645序列.
- 在Canis物种中存在H1645变异,但在更遥远的相关哺乳动物中不存在.
结论:
- 狗FVIII的H1645变体可能是在Cynoidea和Arctoidea的分离后出现的,但是在灰狼和野狼的物种化之前.
- 这种变体在整个养犬血统的演变过程中一直存在.
- 这些发现提供了关于FVIII的分子演变及其对犬类的功能影响的见解.
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