氨基酸生物配比的数量特征  

QUANTITATIVE CHARACTERISTICS OF BIOLOGICAL FORMULAE OF AMINO ACID IN LIVING BODY

作　　者：陈宏权[1] 蒋模有[1] 

机构地区：[1]安徽农业大学畜牧系

出　　处：《畜牧兽医学报》1996年第5期396-404,共9页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：安徽省教委自然科学基金

摘　　要：本文通过对氨基酸生物配比的特征和理论方法的研究，以展示生物体蛋白质构成的分子群体遗传学规律。研究结果表明，不同生物蛋白质均由特定的氨基酸配比构成，在同一物种的不同组织中，这种配比表现出特异性。A hereditary feature of species,the biological formula of amino acid in living body (BFAA), can be described by Pi=∑j(KiXij)/∑j∑I(Kixij)×100%in which Kj=the molecular number of jth protein from the loci in DNA, and Xij=the molecular number of1th amino acid of jth protein. d, d=1/2 loge[∑(Pi +Ci)2∑P]-loge[∑(Pi +Ci)Pi]in which Ci=Eit0.05, Ei=standard error of P-i,and t0.05=t value at 5%level of significance, was used as a probability for determination of the difference between Pi of the simple from a species and mean(Ui)of the one’s population. By do so,Pi, from a simple, used as BFAA of the species were ensured at d.Actually, bAi/Mi was unbiassed estimate of ∑j(KiX(ij)) in which Ai= observed value with percentage content of ith amino acid in a simple, Mi=molecular weight of ith amino acid,and b=constant.So,Pi=Ai/[Mi∑(Ai/Mi)]×100%. In this paper, in addition,the BFAA and d of some living bodies(451 simples of 31 species) have been estimated.The results showed that the Pis of all simples synchronized practically Uis of their populations,d<0.01.BFAA was a important parameter system to describe the difference between species, and joined the process of species evolution in which some tissures of a species didn't synchronize their steps so that the tissues differed greatly in BFAA,such as the divergence among BFAAs of the leaves and stems of plants was smaller than that of the seeds.

关 键 词：氨基酸 分子群体遗传学 进化 

分 类 号：Q517.03[生物学—生物化学]