3 . ewe radiometric conversion assay showed that hela cells have the reductase activity of ll9 - hsdl , which suggests there is the molecular system for llp - hsdl expression in hela cells . and other reports showed hela cells express gr 利用tlc方法证实人类子宫癌细胞株hela具有11po酶活性，而且文献报道hela细胞株表达gr ，说明hela细胞株是研究gc调节11p0机制比较的理想模型
Lovastatin , the 3 - hydroxy - 3 - methylglutaryl - coenzyme a ( hmg - coa ) reductase inhibitor , is generally applied in the treatment of hypercholesterolemia . it is recently demonstrated that lovastatin inhibits proliferation of tumor cells and triges apoptosis 近年来已有研究发现， lovastatin能够有效抑制多种肿瘤细胞株增殖并诱导细胞凋亡，关于lovastatin在肿瘤抑制机理及其肿瘤治疗效应研究已经受到极大关注。
It was suggested that the gene t13m11 . 8 could be the ast candidate gene . this gene was 1432bp long with 6 exons and 5 introns . the putative protein of t13m11 . 8 gene was highly homologous to dihydroflavonol 4 - reductase ( dfr ) , which was an important enzyme in the anthocyanin biosynthesis pathway 该基因的dna序列长1432bp ，含有6个外显子和5个内含子，编码的蛋白与花青苷生物合成途径中的二氢黄酮醇4 -还原酶有较高的同源性。
The changes of the three aspects have the cause - and - effect relationships : changes of soil moisture and temperature were affected directly by the farming practice , subsequently , the content of soil nitrate nitrogen was affected by the former changes , ultimately , the soil nitrate reductase ( nr ) and nitrite reductase ( nir ) activities were affected by the formers 由通径分析的路径系数比较，土壤含水量( 0 . 3604 )土壤温度( 0 . 3091 )硝态氮含量( 0 . 1212 ) ，并共同作用于土壤硝酸还原酶活性。 2冬小麦的不同生育期地膜覆盖的农作措施显著的增加了土壤中n _ 2o排放通量。
The results showed that the cucumber seeds soaked with extracts of total alkaloid , dissoluble alkaloid and fat - soluble alkaloid from p . multisectum ( maxim . ) bobr . , the activities of amylase , protease and lipase during seed germination were inhibited , the seed vigor and germination rate were suppressed , and respiration rate of seedling was slackened ; root activity , chlorophyll content and activities of nitrate reductase , superoxide dismutase sod ) and peroxidase ( pod ) of cucumber seedlings during seedlings growth were increased 结果表明，多裂骆驼蓬总生物碱提取液、水溶性生物碱提取液和脂溶性生物碱提取液浸种均抑制黄瓜种子萌发过程中淀粉酶、蛋白酶和脂肪酶活性，种子活力和萌发速率降低，呼吸速率减慢；幼苗生长过程中根系活力、硝酸还原酶活性升高，叶绿素含量增加，超氧化物歧化酶( sod )和过氧化物酶( pod )活性提高。
The other is ferredoxin / thioredoxin system located in nonphotosynthetic tissue and cytosol of photosynthetic cell , which includes ferredoxin , ferredoxin dependent thioredoxin reductase , thioredoxin h . this two system constitutes important cellular redox regulatory system and can regulate the redox intercellular environment , metablism and signaling transduction 另一个是nadp ( h ) -硫氧还蛋白系统，该系统是由h -型的硫氧还蛋白、 nadp ( h ) 、和依赖于nadp ( h )的硫氧还蛋白还原酶(一种黄素蛋白)组成。
The paper summarize some relevant data and introduces the current research situation about the offects of intragen on photosynthesis , chlorophyll , photosynthetic rate , effeciency of solar energy utilization , dark reaction and photorespiration etc . , on respiration and on some metabolic enzymes , including nitrate reductase , enzyme protective system of membrane - lipid peroxidation 综合国内外有关文献,介绍了氮素对植物光合作用(包括光合色素、光合速率、光能利用率、光合暗反应、光呼吸等) 、呼吸作用和一些代谢酶(包括硝酸还原酶、膜脂过氧化酶促防御系统)的影响。
A aada2 cassette , encoding aminoglycoside adenylyltransferase , was found in 2 isolates of shigella sonnei , and a two cassettes array of dfra1 , encoding dihydrofolate reductase , and aadala in one isolate of shigella sonnei , and another two cassettes array of dfra1 7 and aada5 in two isolates of shigella sonnei and shigella flexneri y - variant each , and a dfrv cassette in one isolate of shigella flexneri 6 , respectively 对其可变区测序分析，其中2株宋内志贺菌i类整合子均携带1个基因盒，为氨基糖昔腺营酞基转移酶( aminoglycosideadenylyltransferase ) az基因( aa朔2 ) ，编码对链霉素的抗性。
The sequences of intron , however , had only 74 % of homology with those of a . thaliana ban . in addition , amino acid sequence of oilseed rape ban had 78 % of homology and 87 % of similarity with those of a . thaliana and had various homologies ( 55 - 64 % ) with many nadph - dependent reductases of other plants 将甘蓝型油菜ban氨基酸序列进行同源比较，发现甘蓝型油菜ban片段的181个氨基酸与拟南芥有78的氨基酸序列相同，相似性达87 ；与80多种植物的nadph还原酶类也有不同程度的同源性( 55 - 64 ) 。
