If the need is just to build a multiple model pdb file, the notepad or any text editor can do the job.

Step 1  : Open with the notepad the two pdb files you want to merge.
Step 2 : Open an empty notepad file and type :

MODEL        1

ENDMDL
MODEL        2

ENDMDL
END

Step 3 :
Copy, from your original pdb files the atom coordinates of your two models, and paste them in the new file between the MODEL and ENDMDL tags, as indicated below :

MODEL        1
(Atom coordinates of your first model.)
ATOM      1  ....
ATOM      2  ....
ENDMDL
MODEL        2
(Atom coordinates of your second model.)
ATOM      1  ....
ATOM      2  ....
ENDMDL
END

Step 4 :
Save your new file as a pdb file or save it first as a text file and rename it then with the pdb extension.

It should work if there no need of alignment otherwise follow Paul's advice.

Hervé


Paul Pillot a écrit :
The software swisspdb viewer can do that : load 2 models in the same window and then save the result in a pdb file.
Paul

Jeff Hansen a écrit :

I need to take two pdb files and merge them into a single multiple  model pdb file.  Can someone give me some help doing this?


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