[pSer2, pSer5, pSer7]-CTD is a substrate for CDK7(cyclin-dependent protein kinase), a phosphorylated polypeptide at ser2, ser5, and ser7 of RNA polymerase II carboxyl terminus (CTD).

黄苷是由细菌的无鸟嘌呤突变体产生的，例如枯草芽孢杆菌、产气杆菌。单磷酸黄苷是嘌呤代谢的中间体，由 IMP 形成，并形成 GMP。

Peptide M is a synthetic Peptide, 50 aa, derived from streptococcus M protein, containing an additional c-terminal cysteine residue.