I'm reviewing the PDB data, being largely ignorant of molecular biology, I have a question regarding experimental models vs theoretical models. Why are there so few theoretical models in the PDB as opposed to experimental models based on x-ray crystallography and NMR, which make up the vast majority of structural models in the PDB?
Only 2% of the models are considered theoretical. In the advanced search there is no category to search for these theoretical models (except possibly 'other' when it comes to experimental method).
I understand they are less accurate. Is there a threshold of accuracy? How about another resource beside the PDB that provides access to these theoretical models for mining purposes or else for research on a particular molecule?
Do you know if there is a database for uploading purely theoretical structures to?
I saw the number somewhere on the PDB 101 site. It made me scratch my head. With your comment, I understand it to be a historical artifact. Thanks.