propeptide meaning in English

前肽[有时特指前胶原各肽链的两端的肽段，也可泛指肽的前体

The gene contains an open reading frame of 1149 nucleotides ( named ap gene , encoding 383 amino acids ) , which contains a signal peptide consisting of 29 residues and a propeptide of 79 residues
该片段全长1588bp ，包括一个1152bp的编码区序列，编码全长为383个氨基酸残基的蛋白质。根据软件分析与同源性比较推测，该蛋白质含有由29个氨基酸残基组成的信号肤， 79个氨基酸残基组成的前肤。
The cdna sequence with 789 bp encodes an uncompleted open reading frame ( orf ) of 263 amino acids , which included a signal peptide of 18 amino acids , a proposed propeptide of 171 amino acids , a partial mature protein of 74 amino acids . the sequences of signal peptide and propeptide are very similar to ones from wannan agkistrodon acutus reported by fan chunyan , but it only contains partial amino acids of mature protein . the 800 bp is likely to be a part of gene encoding metalloproteinase agkistrodon acutus from guangxi province
结论： 600bp产物和已报道的皖南五步蛇纤溶酶金属蛋白酶氨基酸序列相比较，有90 . 6 %的同源性； 800bp产物中信号肽及前肽和已报道的皖南五步蛇金属蛋白酶很相似，同源性为97 . 9 % ，但仅含有部分金属蛋白酶成熟肽的氨基酸序列，推测此片段为广< wp = 6 >西五步蛇金属蛋白酶原基因的一部分。