Dear All:
When I solved the crystal structure of protein, I found a metal binding in
it. But however, I can not decide which type of atom it is. I tried ICP-AES and
the result suggested the protein contained Ca. I tried to get anomalous signal
at the wavelength of 2.07A. And I collected the 360 degree with the spacegroup
P6 and the average redundancy is 19.6. But still I can not see the anomalous
signal for that metal even I can see clearly the anomalous signal for sulfur.
Does anybody have suggestions for me?
Thanks in advance.
2009-06-30
xianchidong
