Dear Jianbo, You may want to try one of these PDB-editing web servers: <http://www.igs.cnrs-mrs.fr/Caspr2/magicPDB.cgi> <http://dicsoft2.physics.iisc.ernet.in/pdbgoodies/inputpage.html> Both make you choose the file before you can see the options, but can do several things, including changing chain ID and renumbering. I haven't tried exactly what you describe, but it is probably worth trying before using a text editor. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Mar 2, 2010, at 1:35 PM, Dong, Jianbo wrote:
Hello,
I'm working with a PDB file, in this file, one protein peptide was recognized as two chains (B and C), I want to make it as one chain, so it will be easier to do some interface analysis and modeling. I guess I can open the file as WORD file and change all the C to B one by one, but it's too much work to edit it that way.
May I get some help for this? Is there a easier way to do this?
Many thanks,
Jianbo