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1570583814

新虫 (初入文坛)

[求助] 求以下蛋白质提取方法的简洁连贯版段落式英文叙述,还是英文滴具体步骤如下

初始悬赏金币 30 个
初始悬赏金币 30 个
1) The sample was grinded to power with liquid nitrogen;
2) Add 10mL cooled acetone contained 10% TCA to 1g sample power at  -20°C for 1 hour;
3) Centrifuge by 15000g for 15 min at  4°C, collect the  deposit  and  add cooled  acetone at -20°C for 1 hour;
4) Repeated the step 3;
5) Centrifuge  by  15000g  for  15  min  at  4°C,  collect  the  deposit  and  dried  by vacuum freezed dryer;
6) Suspends the deposit in cold phenol extraction buffer;
7) Add an equal volume of  phenol saturated with Tris-HCl  (pH  7.5) and shake  the mixture for 30 min at 4 ℃;
8) Centrifuge at 5000g for 30 min at 4 ℃ and collect the upper phenolic phase;
9) Add  equal  phenol  extraction  buffer  to  the  collected  phenolic  phase,  repeat steps 2-3 and collect the upper phenolic phase again;
10) Add 5 volumes of cold 0.1 M ammonium acetate in methanol to the collected phenol phase, store at –20 ℃ for 1 hour;
11) Centrifuge the sample for 30 min at 5000g at 4 ℃;
12) Add 2 volumes (based on the volume of the last collected phenolic phase) ice-cold methanol to wash the pellet, mix gently;
13) Centrifuge the sample for 30 min at 5000g at 4 ℃;
14) Repeat Steps 12and 13 two more times;
15) Repeat Steps 12 and 13 two more times using acetone instead of methanol;
16) Centrifuge the sample for 30 min at 5000g at 4 ℃, dry the deposit;
17) The deposit was dissolved in lysis solution at 30°C for 1 hour;
18) Centrifuge the solution by 15000g for 15 min at room temperature, collect the supernatant and centrifuge again;
19) The supernatant was the extracted protein solution.

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wendytxy

至尊木虫 (职业作家)

rosemary

【答案】应助回帖

我认为第一句里的“power”错了,结合上下文应该是“powder”粉末。
1.以液氮研磨法将样品研为粉末。
2.在-20℃下缓慢滴加10mL冷冻的氯仿的丙酮溶液(v/v, 10%)至粉末中,费时1h(意思是这10mL溶剂从开始滴至滴完费时1h)。
3.4℃下离心(1,5000g, 15 min),沉淀在-20℃下加入冷冻的丙酮,费时1小时。
4.重复第三步。
5.4℃下离心(1,5000g, 15 min),将沉淀冷冻干燥。
6.沉淀置冷冻的苯酚提取缓冲液中,静置。
7.加入等体积的Tris-饱和酚溶液(pH 7.5), 4℃下振荡30min。
8.4℃下离心(5000g, 30 min),收集上层有机相。
夜深了,我就翻译到这吧。
床前明月光,猫猫爱喝汤。举头望主人,低头思猫粮。
2楼2016-03-10 00:03:45
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1570583814

新虫 (初入文坛)

引用回帖:
2楼: Originally posted by wendytxy at 2016-03-10 00:03:45
我认为第一句里的“power”错了,结合上下文应该是“powder”粉末。
1.以液氮研磨法将样品研为粉末。
2.在-20℃下缓慢滴加10mL冷冻的氯仿的丙酮溶液(v/v, 10%)至粉末中,费时1h(意思是这10mL溶剂从开始滴至滴 ...

谢谢啊,我不想要翻译啊,我的意思是想把这些步骤连贯成一段英文,用在文章中,现在太散太复杂了

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3楼2016-03-10 08:09:22
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