Dear Kris,
Letters A, B, C, D, E, F, ... refer to the helices in parvalbumin where the motif was first described. See http://www.ncbi.nlm.nih.gov/pubmed/4700463
Best,
Miha
On 22. 1. 2013, at 14:09, K Singh <[log in to unmask]> wrote:
> Dear All,
> While going through Ca2+ binding site, I came across helix-loop-helix
> motif known as EF-motif, where E and F represents respective helices.
> What I am not able to follow why it is known as "EF" or is it
> something EF abbreviates for?
> With best regards
> Kris
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