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Macromolecular dictionary (mmCIF) version 2.0.09

_phasing_MIR_der.power_acentric

Name:
'_phasing_MIR_der.power_acentric'

Definition:

   The mean phasing power P for acentric reflections for this
   derivative.

              sum|Fh~calc~^2^|
   P = (----------------------------)^1/2^
        sum|Fph~obs~ - Fph~calc~|^2^

   Fph~obs~  = the observed structure-factor amplitude of this
               derivative
   Fph~calc~ = the calculated structure-factor amplitude of this
               derivative
   Fh~calc~  = the calculated structure-factor amplitude from the
               heavy-atom model

   sum is taken over the specified reflections

Type: float

Mandatory item: no

Alias:
_phasing_MIR_der.ebi_power_acentric (ebi_extensions version 1.0)
The permitted range is [0.0, infinity)

Category: phasing_MIR_der