cyclic guanosine monophosphate cgmp molecule. it is a nucleot

acid atom biochemistry bioenergetic bond carbon cgmp chemical chemistry code compound cyclic dna enzyme formula gene genetic genome glycosidic group guanine guanosine guanylate guanylic helix hydrogen illustration kinase molecule monophosphate nitrogen nucleic nucleoside nucleotide oxygen pentose phosphate phosphodiesterase phosphoric phosphorus protein purine ribose rna science sildenafil structural structure tadalafil triphosphate vector