Dear all,
Currently, I was stuck in a coiled-coil crystal. I have two
Se-derivative crystals in similar crystallization conditions. And the cell
parameters of these two are list below :
Crystal A: P21, a=69,b=43,c=135, beta=100.7
Crystal B: P21, a=29,b=230,c=42, beta=92.2
Assuming the crystal packings in A and B are overall similar, there
seems to be another "P21 axis" in crystal A, which may help to determine
the NCS parameters during phasing as there are two moleculars in the ASU.
Could anyone help to tell me how to derive the NCS parameters?
Best regards,
Yuan SHANG
