wang asked in 社會與文化語言 · 1 decade ago

biology.

How proteins are made and packaged in the cell???順便附上中文解釋 tks:)

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  • 1 decade ago
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    Dear 版主 您的問題為:How proteins are made and packaged in the cell…。 以下為解答與其翻譯。1.細胞內會直接產生蛋白質「RNA(氧核醣核酸)」The cell itself will produce the protein [ RNA]2.產生蛋白質可由細胞分裂週期M phase開始說起。Protein production begins from the M phase針對提問者的「如何產生蛋白質,而指出重點」Emphasize on the points needed by the questioner3.在間期中分為G1 phase,S phase,G2 phase司三時期,在此時期,細胞會藉由合成蛋白質和產生原生質有機物來成長The phases include G1 phase,S phase,G2 phase. The cell will grow through the synthesized protein and protoplasm organic

  • Jessie
    Lv 6
    1 decade ago

    每一种蛋白质都有自己独特的氨基酸序列,而氨基酸序列的组成信息则由编码对应蛋白质的基因的核苷酸序列所决定。遗传密码是一套由三个核苷酸组成的密码子,每一种三个核苷酸的组合可以编码一种特定氨基酸,如mRNA上的AUG(在DNA中为ATG)编码甲硫氨酸。由于DNA含有四种核苷酸(A、T、C、G),所以对应的可能的密码子有4×4×4=64种;而标准氨基酸只有20种,因此有部分密码子是冗余的,即部分氨基酸可以由多个不同的密码子所编码。http://zh.wikipedia.org/zh/%E8%9B%8B%E7%99%BD%E8%B...

    Proteins are assembled from amino acids using information encoded in genes. Each protein has its own unique amino acid sequence that is specified by the nucleotide sequence of the gene encoding this protein. The genetic code is a set of three-nucleotide sets called codons and each three-nucleotide combination designates an amino acid, for example AUG (adenine-uracil-guanine) is the code for methionine. Because DNA contains four nucleotides, the total number of possible codons is 64; hence, there is some redundancy in the genetic code, with some amino acids specified by more than one codon.[12] The process of synthesizing a protein from an mRNA template is known as translation. The mRNA is loaded onto the ribosome and is read three nucleotides at a time by matching each codon to its base pairing anticodon located on a transfer RNA molecule, which carries the amino acid corresponding to the codon it recognizes. The enzyme aminoacyl tRNA synthetase "charges" the tRNA molecules with the correct amino acids. The growing polypeptide is often termed the nascent chain. Proteins are always biosynthesized from N-terminus to C-terminus.[12]

    http://en.wikipedia.org/wiki/Protein#Synthesis

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