氨基酸组成分析 meaning in Chinese
amino acid composition analysis
Examples
- It ' s pi is 5 . 2 as determined with ief . amino acid composition analysis showed that one subunit of 6 - phosphogluconate dehydrogenase has about 480 amino acids and there are plentiful of ala , asp , leu , ser , glu , thr , phe , lys in it
氨基酸组成分析表明：枯草芽孢杆菌6 -磷酸葡萄糖酸脱氢酶的亚基由约480个氨基酸残基组成，富含丙氨酸、门冬氨酸、亮氨酸、丝氨酸、谷氨酸、苏氨酸、苯丙氨酸、赖氨酸。 - The hwtx - i gene was chemically synthesized according to its known cdna sequence , the gene was inserted into vector ppic9k which contained aoxj promotor and the sequence of a secreting signal peptide - a - factor , the cloning ppic9k / hwtx - i was constructed and confirmed by two - step pcr and dna sequence analysis , then it was transformed into host strain gs115 , a his + muts cell line was screened and multicopy transformants were screened by various g418 concentrations , the multicopy transformant was named gh1 . gh1 was cultivated in flasks . after 6 days of induction by 0 . 5 % methanol , the supernatant was checked by 16 . 5 % tricine - sds page , which showed there was a band in the position of 3 . 5 - 6 . 1kd , then it was isolated and desalted by ultrofiltration followed by ion exchange of cm column , after reverse phase hplc of ci8 and vacuum drying , the purified rhwtx - 1 was obtained which was proved to be correct recombinant hwtx - i by tricine sds - page , maldi - tof mass spectrometry , amino acid composition analysis , the n - terminal amino acid sequence and its biological activity , the final field of the purified rhwtx - i was about 80mg / l , accounting for 23 . 6 % of it total secretory proteins
将带有hwtx -基因的ppic9k经blgii线性化后，转化酵母宿主菌gs115原生质体后经筛选阳性克隆并经表型鉴定为his ~ + mut ~ s酵母菌，进一步用遗传毒素g418筛选多拷贝的转化菌株，命名为gh1 ；将gh1甲醇酵母菌用0 . 5的甲醇诱导表达，发酵上清经90饱和度的( nh _ 4 ) _ 2so _ 4沉淀， yw - 3 ( mwc03000 )的超滤膜超滤，再经cm阳离子交换， c _ ( 18 )反相hplc纯化得到分子量为4kd左右的组分，其中4289 . 05的组分经质谱鉴定，氨基酸组成分析和序列测定为正确的表达产物，生物学活性表明其活性为天然毒素活性70 % ，表达量为80mg / l 。