Re: [ccp4bb] A helix with leucine repeats

2018-03-05 Thread Emilia C. Arturo (Emily)
Could it be a member of a coiled coil at some point in its lifetime, as a part of its function in regulating position or activity of this receptor? Does the helix have sequence similarity to other coiled coils? see https://www.uniprot.org/help/coiled for a primer on the topic. Looks fun! Emily.

Re: [ccp4bb] A helix with leucine repeats

2018-03-04 Thread Cheng Zhang
Hi Michael, Thanks for the information. It is amphipathic. It follows a transmembrane helical domain of a cell surface receptor and adopts an orientation parallel to the membrane. So it may be associated with the membrane. I am just wondering if such leucine-repeat motif is special among all amph

Re: [ccp4bb] A helix with leucine repeats

2018-03-03 Thread R. Michael Garavito
Dear Cheng, Chris and Ruud have provided you with the typical interpretation of such a motif, but you have forgotten to give the CCP4 community the context of this leucine-repeat helix. Is it amphipathic? Does the protein also have transmembrane helices (as suggested by the figure provided) w