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In silico modulation of apoptotic Bcl-2 proteins by mistletoe lectin-1: functional consequences of protein
Tasneem A Khwaja1, Tayyaba Wajahat, Ishtiaq Ahmad
1Institute of Molecular Sciences and Bioinformatics, Lahore, Pakistan.
Abstract:
The mistletoe lectin-1 (ML-1) modulates tumor cell apoptosis by triggering signaling cascades through the complex interplay of phosphorylation and O-linked N-acetylglucosamine (O-GlcNAc) modification in pro- and anti-apoptotic proteins. In particular, ML-1 is predicted to induce dephosphorylation of Bcl-2-family proteins and their alternative O-GlcNAc modification at specific, conserved Ser/Thr residues. The sites for phosphorylation and glycosylation were predicted and analyzed using Netphos 2.0 and YinOYang 1.2. The involvement of modified Ser/Thr, and among them the potential Yin Yang sites that may undergo both types of posttranslational modification, is proposed to mediate apoptosis modulation by ML-1.
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