2'-Deoxyguanosine-5'-O-(1-thiotriphosphate), RP-isomer sodium salt

Rp-dGTPαS is the nucleotide substrate of SAMHD1 and is one of the enantiomers of the dNTPαS nucleotide. SAMHD1 is an essential regulator of cellular dNTPs that limits virus (HIV-1, etc.) replication in the CD4+ myeloid lineage and resting T cells. The SAMHD1 tetrameric complex catalyzes the hydrolysis of Rp-dGTPαS into 2'-deoxynucleosides and triphosphates[1].

[1] Morris ER, et al. Probing the Catalytic Mechanism and Inhibition of SAMHD1 Using the Differential Properties of Rp- and Sp-dNTPαS Diastereomers. Biochemistry. 2021 Jun 1;60(21):1682-1698. DOI:10.1021/acs.biochem.0c00944