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Wednesday, March 30, 2011

Reporting missing atom types...

About a month ago, I blogged about how to report new atom types the CDK has no knowledge about yet. Earlier this week I had a great overview from Julio of a view phosphorus atom types, a PDF looking like this:


(Though the hybridization field is empty, I noticed just now.)

6 comments:

  1. Sure I have a list of few failures. As my chemistry is not my strength, nonetheless I will give it a shot.

    https://gist.github.com/1016328

    I will follow the protocol for the bug report.

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  2. there are some molecules which i doubt about structures in the KEGG itself like C01793.mol Chlorophyll -Mg has neutral charge in the compound in it!!!

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  3. Absolutely! The list of positives in such a screening is indeed a mix of true positives (the CDK incorrectly not recognizing a known atom type) as well as false positives (the input really being wrong, like the uncharged metal ion).

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  4. Actually, people are using the CDK atom typing for that purpose too: to validate the input, and it is getting pretty good at that too :)

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  5. all the neutral metals are giving false results there should be some default atomtype for neutral metal atoms!!!!

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  6. Sure, nimishg. The challenge is to know how many formal neighbors, lone pairs, pi bonds, etc, such an atom has. Can you tell me?

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