Given the part of the molecule shown below, can the red atom participate in a hydrogen bond with an approriate bonding partner?

-O-H

-C-H

-N-H

-O-H

-C-H

-N-H

2 answers

How am I supposed to know which is the red atom?
The red atoms (in order) are:
-O
-H
-N
-H
-C
-H