细菌DNA结合蛋白

细菌DNA结合蛋白（）又被称为组蛋白类似蛋白（），通常为碱性蛋白质，90个左右氨基酸残基，与特定DNA位点结合。

例子

H-NS

HU

IHF

比较
{| class="wikitable"
|+Table 1. 三种细菌DNA结合蛋白的比较
|-
!DNA结合蛋白
!大小
!结构
!结合位点
!效应
|-
|H-NS
|15.6 kDa
|exists in dimers to physically prevent RNA polymerase from binding to promoter
|binds to bent DNA, binds to P1 promoter in E. coli
|regulation of gene expression
|-
|HU
|10 kDa
|α-helical core and two positively charged β-ribbon arms
|binds non-specifically to dsDNA, binds to DsrA, a small non-coding RNA that regulates transcription
|induces negative supercoiling into circular DNA
|-
|IHF
|20 kDa
|αβαβ hetrodimer
|binds to specific sequences of DNAcreates kinks in DNA
|-
|}

参考文献

蛋白质域