The SEC-C motif found in the C terminus of the SecA protein, in the middle of some SWI2 ATPases and also solo in several proteins. The motif is predicted to chelate zinc with the CXC and C[HC] pairs that constitute the most conserved feature of the motif. It is predicted to be a potential nucleic acid binding domain.
Matousek WM, Alexandrescu AT.
NMR structure of the C-terminal domain of SecA in the free state.
Biochim. Biophys. Acta 1702 2004 163-71
[PubMed: 15488768]