Given the options (A: H-bond, B: charge-charge, C: coordination bond, D: van der waals)

[Each residue refers to its R-group].

I. What type of interaction/bond does a Zinc ion and Cysteine residue have?

II. What type of interaction/bond does a phosphate have with an Arginine residue, a Threonine residue, and a Serine residue?

III. What type of interaction/bond does an amino group have with a Leusine residue, a Proline residue, and a Histidine residue?

IV: What type of interaction/bond does a carboxyl group have with an Arginine residue, a Histidine residue, and a Glutamine residue?