Dynein axonemal heavy chain 11 (DNAH11)

Dynein axonemal heavy chain 11 is a large motor protein forming a critical component of the ciliary outer dynein arm, functioning as an ATPase that generates the force required for beating of motile cilia and flagella by moving toward the minus end of microtubules[1][5][6]. DNAH11 localizes to the *proximal region* of the respiratory cilia axoneme, and its activity is vital for proper ciliary bending and waveform generation. The protein is essential for embryonic left-right axis determination, effective mucociliary clearance in the respiratory tract, and normal sperm motility[2][4][6][7]. Mutations in the DNAH11 gene lead to *structure-function defects* in cilia, causing primary ciliary dyskinesia (often with normal ultrastructure but abnormal beating), situs inversus, infertility in males, and sometimes congenital heart defects; pathogenic variants can serve as diagnostic genetic markers but have not been targeted pharmacologically[3][4][6].

Other names

Dnahc11DPL11CILD7DNAHC11DNAHBLDNHBLLeft-right dynein (in mice, *lrd*)Axonemal beta dynein heavy chain 11Ciliary dynein heavy chain 11Dynein, ciliary, heavy chain 11Dynein, heavy chain beta-likeDynein, axonemal, heavy polypeptide 11Other cited abbreviations above

Not applicable. No known drugs directly target DNAH11; mechanisms described are for loss-of-function mutations causing impaired force generation in cilia[2][4].