[modeller_usage] Writing out chain ID in the PDB

["Vadim Patsalo" <>]

Hello Modeller Users,

I am building models in the way described in the basic tutorial. I noticed that the completed model PDB is missing the chain ID column. The template I am modelling from has only one chain, A. Here's an example:
Template:

ATOM      1  N   SER A   2      -6.487   9.533  21.436  1.00  2.23       1SG   2
ATOM      2  CA  SER A   2      -5.822  10.328  20.343  1.00  2.86       1SG   3
ATOM      3  CB  SER A   2      - 6.345  11.788  20.283  1.00  2.67       1SG   4

and model:

ATOM      1  N   SER     1      -0.662  11.979  19.810  1.00 65.26       1SG   2
ATOM      2  CA  SER     1       0.191   12.970  19.122  1.00 65.26       1SG   3
ATOM      3  CB  SER     1      -0.325  14.388  19.420  1.00 65.26       1SG   4

Is there a way to force Modeller to print the chain ID? I convert the resulting PDB to charmm format, and some unpleasantness follows because of the missing chain info.

Thanks for your help!
Vadim

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