NF-κB p50亚基同源结构域相互作用多肽的筛选

目的：应用酵母双杂交技术筛选获得与核因子κB（NF-κB）p50亚基同源结构域（RHD）相互作用的多肽。方法：应用酵母双杂交技术，以NF—κBp 50 RHD为诱饵，筛选16肽cDNA文库，寻找与其相互作用的多肽，应用β-gal试验、酵母交配试验及一对-酵母回复性杂交等方法筛除假阳性克隆，确定阳性克隆。结果：经酵母双杂交及反复的排查，共获得8个阳性克隆。通过GenBank进行检索，未发现与之相匹配的蛋白序列。结论：获得8个与NF-κB p50 RHD相互作用的新型多肽，多肽的功能需进一步验证。

Screening of polypeptides interacting with Rel homology domain of NF-κB p50 subunit

AIM: To obtain the polypeptides interacting with NF-kappaB p50 Rel homology domain (RHD) by yeast two-hybrid technique. METHODS: Using NF-kappaB p50 RHD as bait, the polypeptides interacting with NF-kappaB p50 RHD were screened from a 16-peptide cDNA library by yeast two-hybrid technique. The false positive clones were screened out but the positive clone were identified by beta-GAL assay, yeast mating, and one to one yeast two-hybrid method. RESULTS: 8 positive clones were obtained. The gene sequences of the eight polypeptides were different from each other and their homologous proteins were not found in GenBank. CONCLUSION: 8 novel polypeptides interacting with NF-kappaB p50 RHD were obtained, but their functions need to be validated in further experiments.