Molecular replacement question

[alex jack <protein_crystal@yahoo.com>]

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Hi, all:

Could any expert tell me the exact differences among
"reciprocal space rotation function", "real space
rotation function" and "direct rotation function"?
e.g. what is "rotated" in these three
methods?---"Patterson function, or |F|2, or the
model?? what are the algorithms behind them? which
method is most efficient and successful for different
situation?

Please e-mail any comment to me. I really appreciate
it. Thanks in advance.

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