问题描述：
英语翻译
1.pEt22b is a bacterial expression vector from Novagen.
2.T7 promoter.
3.Amp resistant.
4.N-terminal pelB signal sequence for potential periplasmic localization.
5.optional C-terminal His tag.
6.lacIq.
7.multiple cloning sites.
1.pEt22b is a bacterial expression vector from Novagen.
2.T7 promoter.
3.Amp resistant.
4.N-terminal pelB signal sequence for potential periplasmic localization.
5.optional C-terminal His tag.
6.lacIq.
7.multiple cloning sites.
问题解答：
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