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Online Journal of Veterinary Research©
Volume 25 (5): 327-330, 2021.
In silico interactions between DNA and platelet P2Y1 receptor.
Indian Institute of Technology, Madras, India.
Mukherjee A., In silico interactions between DNA and platelet p2y1 receptor, Onl J Vet Res., 25 (5): 327-330, 2021. Purinergic receptors are proteins that respond to sensitization by purine nucleotides, setting off signal transduction pathways eliciting ligand-gated ion channels P2X and G-Protein Coupled Receptors P2Y type responses. A specific purine-receptor is expressed greatly on platelet surface as a high affinity ADP receptor to induce platelet aggregation. In silico steric force analysis was done to determine if P2Y1 receptor which evinces a high affinity for ADP could bind DNA as well. Secondary structure of protein proximal to docking site almost fitted into minor groove helix required for protein DNA interactions. Amino acids found close to docking included ASP that bonds hydrogen with multiple bases, ASN adenosine as donor and acceptor as P2Y1 is a high affinity ADP receptor, SER bidentate H with guanine, ARG favors H-bond and PHE, PRO and ILE enhance Van der Waals forces by alkyl side chain and flat surface aromatic rings. Author surmises that In silico docking yielded stable and steric DNA-P2Y1 complexes with ~>70% due to Van Der Waal forces. Docking site analysis revealed amino acids that could favor DNA-protein interactions suggesting that high affinity ADP receptorP2Y1 might interact with double stranded DNA and terminal helices.
KEYWORDS: platelets, purinergic receptors, P2Y1, DNA binding proteins, ADP, docking.