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Only consider standard residues in consecutive CA filter#576

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bcm49 wants to merge 1 commit intojwohlwend:mainfrom
bcm49:processing-consecutive-ca-filter-standard-residues-only
Open

Only consider standard residues in consecutive CA filter#576
bcm49 wants to merge 1 commit intojwohlwend:mainfrom
bcm49:processing-consecutive-ca-filter-standard-residues-only

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@bcm49 bcm49 commented Sep 17, 2025

The consecutive CA filter marks a protein chain as invalid if it has two consecutive residues that are too far apart. I have CIF files where a few zinc and calcium ions are included in the protein chain. Since the ions are far apart, this chain would previously have been marked invalid by the filter. After this small change, the ions are ignored by the filter and the protein chain is marked as valid during processing.

The consecutive CA filter marks a protein chain as invalid if it has two consecutive residues that are too far apart. I recently found a CIF file where a few zinc and calcium ions were included in the protein chain. Since the ions are far apart, this chain would previously have been marked invalid by the filter. After this small change, the ions are ignored by the filter and the protein chain is marked as valid during processing.
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