Global functional atlas of Escherichia coli proteins
Because of its central position in the microbial research community, the Gram-negative bacterium Escherichia coli plays a leading role in investigations of the fundamental molecular biology of bacteria.
蛋白质的亚细胞定位
关于蛋白质的亚细胞定位的预测,In general,预测方法分为3个步骤。首先,为每一类亚细胞locations构建客观而具有代表性的数据集。其次,从数据集中提取特征参数或 descriptor。最后也是最关键的一步,通过算法比较查询序列中所包含的特征参数与各类相应的location的相似度,作出判断,一般会用一组概 率的形式来表述。很明显,其中大量运用的是机器学习理论和统计学的方法。对算法有兴趣的朋友可以参考下面这一篇综述,“An overview on predicting the subcellular location of a protein” In Silico Biology 2002 http://www.bioinfo.de/isb/2002/02/0027/main.html
以下是该综述中涉及的部分server,都是比较经典的。
PSORT:http://psort.nibb.ac.jp
蛋白质保存方法
cystal of ice will form that can mechanically shear the protein.the same as DNA.
for storage of DNA, it is better to be stored in buffer to avoid such mechanical shearing and hydrolysis, if you concern about EDTA, you can use Tris-HCl (pH 8.0).
Here is some general guide for storage of purified proteins:
For short term storage (up to 24 h), most proteins can be kept at 4C.
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