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▲the term proteome is derived from proteins expressed by the genome.
▲The genome tells us what is possible什么是可能的, the proteome tells us what is functionally present什么是(功能上)存在的
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• ▲e.g. which proteins interact to form a signal-transduction
pathway or an ion channel in a membrane
• ▲the proteome is not a fixed characteristic of the cell. Rather,
complex level of information content, the level of functional information, which encompasses the type, functions, and
interactions of proteins that yield a functional unit. 结构信息层面→功能信息层面(包括作为基本功能单位的蛋白的 类型,功能和相互作用)
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• How do AA sequences specify the
conformations of proteins?
• How do proteins bind specific substrates and
other molecules, mediate catalysis, and transduce energy and information?结合特异底 物和其它分子,催化反应,转换能量和信息.
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• Milk, a source of
nourishment for all mammals, is composed, in part, of a variety of proteins. The protein components of milk are revealed by
the technique of MALDITOF mass spectrometry, 质谱法which separates molecules on the basis of their mass to chargeOTEINS
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概述 General overview
点击输入本栏的具体文字,简明扼要的说明分项内容,请根据您 的具体内容酌情修改。
Click to enter the specific text in this column to explain the sub item content briefly. Please modify it according to your specific content.
• Casein酪蛋白
lactalbumin乳清蛋白 lactoglobulin乳球蛋白
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An indispensable必需的 step is the
purification of the protein of interest
• An adage of biochemistry: Never waste pure
▲Human genome, all 3 billion bases with 25000~30000 genes
▲But the knowledge of genome is analogous to a list of parts for a car —it does not explain how the parts work together ▲A new word has been coined, the proteome, to signify a more
thoughts on an impure protein
• investigating, characterizing, and cataloging proteins begins the
process by separating a particular protein from all other biomolecules in the cell 蛋白纯化是上述一切的前提
because it represents the functional expression of information信 息的功能表达, it varies with cell type, developmental stage, and environmental conditions(e.g. presence of hormones)它不是细 胞的固定特征,而是随细胞类型,发育阶段,环境条件变化的. The proteome is much larger than the genome because of such factors as alternatively spliced RNA可变剪接, the posttranslational modification of proteins翻译后修饰, the temporal regulation of protein synthesis蛋白合成的时序调控, and varying protein-protein interactions变幻莫测的蛋白间相互 作用. Unlike the genome, the proteome is not static.非静态
• An indispensable 必 需 的 step is the
purification of the protein of interest
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The Proteome is the Functional Representation of the genome蛋白质组(学)是基因组的功能表达