Item _phasing_MIR_der_refln.HL_C_iso

Description

              The isomorphous Hendrickson-Lattman coefficient C~iso~ for this
               reflection for this derivative.

                         -Fp~obs~^2^ * [sin(alphah~calc~)^2^
                                     -  cos(alphah~calc~)^2^]
               C~iso~ =  ------------------------------------
                                        E^2^

               E            = (Fph~obs~ - Fp~obs~ - Fh~calc~)^2^
                              for centric reflections
                            = [(Fph~obs~ - Fp~obs~) * 2^1/2^ - Fh~calc~]^2^
                              for acentric reflections

               Fp~obs~      = the observed structure factor amplitude of the
                              native
               Fph~obs~     = the observed structure factor amplitude of the
                              derivative
               Fh~calc~     = the calculated structure factor amplitude
                              from the heavy atom model
               alphah~calc~ = the phase calculated from the heavy atom model

Category

Mandatory Code

Data Type Code