spider toxin meaning in English
蜘蛛毒素
Examples
- This 40 - residue toxin with molecular weight of 4440 . 18da shows little sequence identity with other spider toxins . another neurotoxic peptide , named huwentoxin - vh , has been purified from the venom of the same spider
此外从虎纹捕鸟蛛( selenocosmiahuwena )毒液中纯化的另一种新型肤类神经毒素，虎纹捕鸟蛛毒素一vii ( huwentoxi仆vii ， hwtx一vll )的化学性质与基本生物学功能。 - The amino acid sequences of about 100 kinds of spider toxin have been determined so far . their molecular weights were varied from 3 to 12kd except for black widow spider toxins , which were high molecular mass types . there were plenty of cysteine residues in their sequences
至今已有近百种蜘蛛神经毒素的一级结构被测定，除黑寡妇蜘蛛毒素为高分子量毒素外，其他蜘蛛神经毒素的分子量在3 - 12kd之间，不同种属来源的毒素同源性很小，序列中含有较多的半胱氨酸。 - So the results indicate that the two mutants have no significant difference in the toxicity of inhibiting mammal neuron sodium channels , and ala20 or ser20 was not the key residue . the two peptide neurontoxins inhibite mammalian voltage - gated sodium channels through a novel mechanism distinct from other known spider toxins such as 5 - actxs , - agatoxins i - vi which banded receptor site 3 to slow the inactive time course of sodium channels . we suggest that hntx - v maybe target the site 1 of sodium channels in a similar manner to - conotoxins and ttx
同时两种海南捕鸟蛛毒素从影响ttx一s钠通道的方式上来看，与其它已知肤类蜘蛛毒素如6一actxs等通过作用于位点3引起延缓钠通道的失活时间存在明显不同，我们推测hntx一iv和iintx一v可能是以一种新的不同于其它蜘蛛毒素的方式来影响钠通道的，而ttx一s钠通道位点1则很有可能便是它们的作用位点，与ttx和林一eonotoxins相似。 - The materials as explant in transformation come from birch leaf , stem segment and leaf stalk , and the spider toxin gene was used as foreign gene for this transformation experiment . it showed that the best explant was the big leaf , on which the transformation frequency was 22 % . by gus detection , there were 43 percent of the plants with kanamycin resistance , and 100 percent of positive result , by pcr amplification , was gotten from random sampling
利用双元载体的根癌农杆菌lba4404菌株( agrobacteriumtumefaciens ) ，含质粒pyhy (目的基因及npt 、 gus基因) ，对白桦试管苗茎段，叶柄，叶片三种外植体进行侵染，结果表明：大叶片生长势强，为转基因的最优外植体，转化率能够达到22 。