Rms shooting for end amino acids

GROMACS version: Gromacs 2019.1
GROMACS modification: No
Hello users,
Hello Justin,‬

‪Had some doubt about gmx rms command, I was calculating rmsd for individual amino acids of peptide, in my case the rmsd for tail amino acids is shooting 100 fold. Command is correct, I cross checked, I am making structure whole before running rms‬
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Termini are generally very flexible. Watch the trajectory to see how much these amino acids move during the simulation.