Hello, I’m trying to build a series of related peptides with ChimeraX’s Build Structure - peptide tool. The way it currently works is simple and easy to use. However it is cumbersome to input phi/psi angles repeatedly, especially if the peptide sequences is anything more than very short. I am wondering if there is a way for this tool to take in either a text file list containing (Amino Acid, Phi, Psi), to paste in the same data into the input window, or any other related way to more efficiently generate peptide structures for starting points. This would greatly reduce the time needed to compare a variety of related sequences and conformations. Thank you very much for your time and consideration! -Jeff ---------------------------------------------- Jeffrey D. Hartgerink, Ph.D. Prof. of Chemistry and Bioengineering Rice University jdh@rice.edu / 713-348-4142 https://hartgerink.rice.edu