 Amphiphysin, endophilin, BRAP1/bin2 and nadrin are examples of such proteins containing an N-BAR.The Drosophila amphiphysin N-BAR (DA-N-BAR) is an example of a protein with a preference for negatively charged surfaces.F-BAR domains (for FCH-BAR, or EFC for Extended FCH Homology) are BAR domains that are extensions of the already established FCH domain.