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Thanks Erick, it work fine and it's easy to do.<BR>
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On Mon, 2006-08-28 at 13:51 -0700, Eric Pettersen wrote:<BR>
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    <FONT COLOR="#000000">There is kind of a "cheaty" way to do it if you are using the 1.2255 snapshot by saving a session file and editing it.  You need to use an editor that can handle long lines, like TextEdit.app on a Mac or WordPad on Windows.  Search for the string 'chain' (including the quotes).  You'll see some text that looks something like:</FONT>
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    <FONT COLOR="#000000">'chain': (29, 'A', {})</FONT>
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    <FONT COLOR="#000000">change the A to B so it looks like:</FONT>
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    <FONT COLOR="#000000">'chain': (29, 'B', {})</FONT>
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    <FONT COLOR="#000000">save the edited session and open it in Chimera and the chain ID will have changed.</FONT>
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    <FONT COLOR="#000000">--Eric</FONT>
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    <FONT COLOR="#000000">On Aug 28, 2006, at 1:36 PM, Elaine Meng wrote:</FONT>
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        <FONT COLOR="#000000">Hi Yunierkis,</FONT>
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        <FONT COLOR="#000000">Sorry, there is no way to change the chain ID in Chimera.  You would need to text-edit A to B in the PDB file before opening it.  (Or, if you're fetching the structure from the PDB, write it out in PDB format, edit the file, and read it back in.)</FONT>
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        <FONT COLOR="#000000">Depending on what you are trying to do, there may be some way of doing it without changing chain ID.</FONT>
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        <FONT COLOR="#000000">Best,</FONT>
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        <FONT COLOR="#000000">Elaine</FONT>
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        <FONT COLOR="#000000">On Aug 28, 2006, at 12:48 PM, Yunierkis Perez Castillo wrote:</FONT>
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            <FONT COLOR="#000000">Hi all,</FONT><BR>
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            <FONT COLOR="#000000">I need to change the chain ID for a protein, that is, change the chain A to chain B.</FONT><BR>
            <FONT COLOR="#000000">Can I do that with chimera?</FONT><BR>
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            <FONT COLOR="#000000">Thanks in advance</FONT><BR>
            <FONT COLOR="#000000">Yunierkis</FONT><BR>
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            <FONT COLOR="#000000"><A HREF="mailto:Chimera-users@cgl.ucsf.edu">Chimera-users@cgl.ucsf.edu</A></FONT>
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        <FONT COLOR="#000000">-----</FONT>
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        <FONT COLOR="#000000">Elaine C. Meng, Ph.D.                          <A HREF="mailto:meng@cgl.ucsf.edu">meng@cgl.ucsf.edu</A></FONT>
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        <FONT COLOR="#000000">UCSF Computer Graphics Lab and Babbitt Lab</FONT>
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        <FONT COLOR="#000000">Department of Pharmaceutical Chemistry</FONT>
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        <FONT COLOR="#000000">University of California, San Francisco</FONT>
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        <FONT COLOR="#000000">                     <A HREF="http://www.cgl.ucsf.edu/home/meng/index.html">http://www.cgl.ucsf.edu/home/meng/index.html</A></FONT>
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