[gmx-users] error in coordinate file

[s lal badshah]

Hi,
I am new to GROMACS.Currently I am working on a protein.For minimization I prepare file and when I gave the command in the shell the following output comes:
Fatal error:
number of coordinates in coordinate file (2a5f_b4ion.pdb, 40183)
             does not match topology (2a5f.top, 40612)
Please guide me what path I should follow to correct it.
Regards,
lal badshah

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