spider toxin 中文意思是什麼

spider toxin 解釋
蜘蛛毒素
  • spider : n 1 【動物；動物學】蜘蛛。2 帶柄三腳平底鍋。3 三腳架。4 【機械工程】星形輪；十字叉；（螺旋槳的）...
  • toxin : n. 毒素，毒質。
  1. 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

    至今已有近百種蜘蛛神經毒素的一級結構被測定，除黑寡婦蜘蛛毒素為高分子量毒素外，其他蜘蛛神經毒素的分子量在3 - 12kd之間，不同種屬來源的毒素同源性很小，序列中含有較多的半胱氨酸。
  2. 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

    利用雙元載體的根癌農桿菌lba4404菌株（ agrobacteriumtumefaciens ） ，含質粒pyhy （目的基因及npt 、 gus基因） ，對白樺試管苗莖段，葉柄，葉片三種外植體進行侵染，結果表明：大葉片生長勢強，為轉基因的最優外植體，轉化率能夠達到22 。
  3. Huwentoxin - i ( hwtx - i ) is a polypeptide neurotoxin isolated from the crude venom of chinese bird spider selenocosmia huwena. its molecular weight is 3750 dalton. the toxin contains 33 amino acid residues and three disulfide bonds

    虎紋捕鳥蛛毒素- （ huwentoxin - ）是從虎紋捕鳥蛛selenocosiahuwena粗毒中分離得到的一種多肽類神經毒素，分子量為3750 ，由33個氨基酸殘基組成，含三對二硫鍵。
  4. Huwentoxin xi ( hwtx ~ xi ), a serine protease ! inhibitor, consists of 55 amino acid residues with three disulfide bridges. the toxin was isolated from the venom of the chinese spider ornithochoctonus huwena by ion - exchange chromatogram - phy and reverse phase high performance liquid chromatography

    本文報道從虎紋捕鳥蛛（ ornithochoctonushuwena ）粗毒中，應用陽離子交換和反相高效液相色譜的方法分離到一種胰蛋白酶抑制劑，命名為huwentoxin - （ hwtx - ） 。
  5. The contraction of isolated guinea pig ileum induced by electrical stimulus can be inhibited by hwtx - i, a toxin purified from the chinese bird spider sclcnocosmia huwenn

    虎紋捕鳥蛛毒素hwtx - （ 5 10 ~ （ - 6 ） g ml ）對電刺激豚鼠回腸引起的一過性收縮有非常明顯的抑制作用。
  6. 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

    此外從虎紋捕鳥蛛（ selenocosmiahuwena ）毒液中純化的另一種新型膚類神經毒素，虎紋捕鳥蛛毒素一vii （ huwentoxi仆vii ， hwtx一vll ）的化學性質與基本生物學功能。
  7. You then place a very thin glass pipe up against the fangs, and you can collect about two billionths of a litre of toxin per spider

    然後，你用一塊很薄的玻璃管，頂著毒牙處來收集毒液，你可以從每隻蜘蛛那裡，取得大約一升的二十億分之一的毒液。
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