To ligate the target fragment and the vector (extracted from agarose gel from last laboratory); To transform competent
cells with the ligated plasmid and plate the cells for overnight culture.
7. PCR 法筛选阳性克隆及测序(4 学时)
Lab 7: Colony Screening PCR and Sequencing (4 hours)
挑选若干上节课转化后培养生长出的菌落,利用 PCR 法对克隆片段进行扩增,筛选阳性克隆;了解基因测序的基本原
理,学习测序结果分析的基本方法;制备测序品,对克隆片段进行测序分析。
To select several colonies grown from last laboratory, and to amplify the target fragment by PCR for the selection of
positive clones; To understand the principle of gene sequencing and to learn how to analyze sequencing results; To
prepare sequencing samples, and to sequence and analyze the cloned fragment.
8. 蛋白的提取与定量(4 学时)
Lab 8: Protein Extraction and Quantitation (4 hours)
学习蛋白的提取方法,从上节课获得的阳性克隆菌株扩增产物中提取全蛋白;学习蛋白定量的原理,比较紫外光吸收法和
BCA 法两种蛋白定量方法。
To learn basic methods of protein extraction, and to extract total proteins from the propagated cells derived from the
positive clone identified in the last laboratory; To understand the principles of protein quantitation, and to compared two
protein quantitation methods: UV spectroscopy and BCA methods.
9. SDS-聚丙烯酰胺凝胶电泳及考马斯亮蓝染色(4 学时)
Lab 9: SDS-PAGE and Coomassie Blue Staining (4 hours)
掌握 SDS-聚丙烯酰胺凝胶电泳分离蛋白质的原理及方法,将上节课提取的蛋白质进行电泳分离;对凝胶进行考马斯亮蓝
染色,对染色的蛋白条带进行观察。
To learn the principle and method of protein separation by SDS-polyacrylamide gel electrophoresis (SDS-PAGE), and to
run a SDS-PAGE to separate the proteins obtained in the last laboratory; To stain the gel with Coomassie blue stain and
to observe the stained protein bands.
10. 蛋白印迹(4 学时)
Lab 10: Western Blot (4 hours)
了解蛋白免疫印迹法的原理与方法,将 SDS-PAGE 分离的蛋白转印至 PVDF 膜上,而后进行封闭、抗体孵育、显色等步
骤,观察外源表达所克隆基因(实验四~七)蛋白产物的表达量。
To understand the principle and method of Western blot; To transfer the proteins that are separated by SDS-PAGE to a
PVDF membrane, followed by blocking, incubation with antibodies, and chemiluminescent detection of exogenous
expression of the protein of the cloned gene (Lab 4~7).
11. 亲和层析法蛋白纯化(4 学时)
Lab 11: Affinity Chromatography for Protein Purification (4 hours)
学习亲和层析法进行蛋白纯化的原理,利用 Ni-NTA 柱从实验八中提取的蛋白中纯化克隆的 His-Tag 融合蛋白。
To learn the principle of affinity chromatography, and to purify the cloned His-Tag fusion protein from total proteins
extracted in Lab 8.
12. 磷酸甘油醛脱氢酶动力学检测(4 学时)
Lab 12: GAPDH Kinetics Assay (4 hours)