May I know feasible ways to form a complex (conjugation) between amino or carboxyl group in amino acid with hydroxyl group of a different compound?

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Q1: How can I improve hybridization and the process of hybridization?

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Omar Gonzalez-Ortega

The easiest way to activate OH group is to use carbonyldiimidazole or N,N'-disuccinimidyl carbonate, then the active group can be reacted with an amine-containing molecule. You can also use epoxides or oxiranes but they require high pH.

Michael G. Weller

It would be helpful to know more details of your conjugation problem.