yaya@aip.org (herbert_bernstein) writes: >Could the PDB please consider adding the following additional HELIX >types to the HELIX class field (columns 39-40) of the HELIX record, snip... snip... snip... >Suggested additional classifications: > > 11. helix with handedness and type not specified (protein) > 12. helix with handedness and type that do not > conform to an accepted category (protein) > 13. right-handed helix with type not specified (protein) > 14. right-handed helix with type that does not > conform to an accepted category (protein) snip... snip... snip... I have just a minor quibble. Using the term "accepted category" implies that the converse is, in some sense, unacceptable. I suggest you use the phrase "established category" instead. Dale Tronrud dale@uoxray.uoregon.edu University of Oregon