[gmx-users] Meaning of n-n hydrogen bond

[chetana baliga]

Dear gmx users,

Upon using g-hbond with the -hx option, to calculate hydrogen bonds in
the mainchain, we are supposed to get a list of all n-n+1 hydrogen
bonds, with i = 0 - 6. But, I am regularly getting several n-n
hydrogen bonds. What is the meaning of a hydrogen bond of a residue
with itself ! I am unable to understand, please help :)

Thanks in advance,

Chetana.