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huojinlong8610金蟲 (小有名氣)
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[求助]
翻譯 分子生物學(xué)
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分別提取豬18種組織的RNA,反轉(zhuǎn)錄為cDNA,利用RT-PCR方法擴(kuò)增腫瘤壞死因子(TNF-α)基因編碼區(qū)序列,將純化的片段與pMD18-T載體連接,轉(zhuǎn)化大腸桿菌DH 5α,篩選陽性克隆并測定其序列,利用生物信息學(xué)方法分析其序列特征,并與其他物種構(gòu)建系統(tǒng)進(jìn)化樹。同時采用半定量RT-PCR方法分析TNF-α基因在豬18種組織中的表達(dá)情況。結(jié)果顯示,豬TNF-α基因編碼區(qū)全長699 bp(GenBank登錄號:JF831365),其編碼232個氨基酸。氨基酸序列同源性分析表明,與貓等12個物種具有80%以上的相似性,分子系統(tǒng)進(jìn)化研究表明與牛、山羊、綿羊及海豚的關(guān)系較近。多組織半定量RT-PCR研究表明TNF-α mRNA在豬的多個組織中均有表達(dá),其中在中腦、卵巢、脾、肺、神經(jīng)及胃中表達(dá)量較高。 非誠勿擾。。! |
至尊木蟲 (小有名氣)
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We extracted RNA from 18 kinds of pig tissues separately,anti-transcripted them to cDNA,and used RT-PCR method to amplify the gene code aera sequences of tumor necrosis factor,then jointed the purified sequences with pMD18-T carrier to transform E.coli. Positive clones were screened and their sequences were determined.Using bio-information method to analyse their characters,system evolution tree was set up with other species.Meanwhile,we used semi-quantitative RT-PCR method to analyse the expression of TNF-α gene in 18 kinds of pig tissues . The result showed the whole length of pig TNF-α gene code aera was 699 bp(GenBank accession number:JF831365 ),it coded 232 amino acids. The amino acid homology analysis showed it had over 80% homology with 12 species like cat,molecular system evolution research indicated it had a close relation with cattle,goat,sheep and dolphin.Multi-tissues semiquantitative RT-PCR study showed TNF-α mRNA expressed in several tissues of pig,and its expression was higher in brain,ovary,spleen,lung,neuro and stomach. 新手,不足之處還望大家多多指教 |
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