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[ccp4bb]: Metals in PROTIN
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Hi,
Thanks for all those who replied. Proposed solutions for adding zinc to
the refinement:
1. Use refmac5 instead of older version. It has a "built-in-protin".
2. For the unfortunate ones whose system administrators are too busy to
keep up with new versions, you have to use IUM as the residue name in
the PDB file. Here are some examples:
ATOM 2781 ZN2+ IUM X 479 21.563 25.541 16.304 1.00 41.89 27
ATOM 830 ZN+2 IUM Z 1 1 -0.002 -0.004 7.891 0.33 10.40
ATOM 2960 ZN IUM D 1 6.935 15.945 -23.394 0.70 38.19 30
For the record, I think it would be nice if the residue name IUM
appeared in the manual pages:
1. RWBROOK: (CCP4: Library) page:
Under topic "7.STANDARD RESIDUE NAMES", add "Ions (elements) IUM"
2. PROTIN page:
Under "INPUT AND OUTPUT FILES - DICTPROTN", add "Ions (elements) IUM"
Thanks again, joao.