分子生物學(xué)-2(文件)
【正文】 every gene unequivocally solely on the basis of sequence. The transcriptome (轉(zhuǎn)錄物組 ) is the plete set of genes expressed under particular conditions. It is defined in terms of the set of mRNA molecules that is present, and can refer to a single cell type or to any more plex assembly of cells up to the plete anism. The proteome (蛋白質(zhì)組 ) is the plete set of proteins. It should correspond to the transcriptome, although there can be differences of detail reflecting changes in the relative abundance or stabilities of mRNAs and proteins. Proteins may function independently or as part of multiprotein assemblies. If we could identify all proteinprotein interactions, we could define the total number of independent assemblies of proteins. 第 3章 基因的數(shù)目 Cvalue (C值 ) is the quantity of DNA in the genome (per haploid set of chromosomes). There is enormous variation in the range of Cvalues, from 106 bp for a mycoplasma to 1011 bp for some plants and amphibians. Nonrepetitive DNA (非重復(fù)序列 DNA) shows reassociation kiics expected of unique sequences. Repetitive DNA (重復(fù)序列 DNA) behaves in a reassociation reaction as though many (related or identical) sequences are presen
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