Title : Heparin and heparan sulfate proteoglycans promote HIV-1 p17 matrix protein oligomerization: computational, biochemical and biological implications.

Pub. Date : 2019 Oct 31

PMID : 31673058






7 Functional Relationships(s)
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1 Since the bioactive form of several cytokines is represented by dimers/oligomers and oligomerization is promoted by binding to heparin or HSPGs, here we evaluated if heparin/HSPGs also promote p17 oligomerization. Heparin family with sequence similarity 72 member B Homo sapiens
2 Heparin-induced p17 oligomerization is of electrostatic nature, being it prevented by NaCl, by removing negative sulfated groups of heparin and by neutralizing positive lysine residues in the p17 N-terminus. Heparin family with sequence similarity 72 member B Homo sapiens
3 A new computational protocol has been implemented to study heparin chains up to 24-mer accommodating a p17 dimer. Heparin family with sequence similarity 72 member B Homo sapiens
4 Molecular dynamics show that, in the presence of heparin, two p17 molecules undergo conformational modifications creating a continuous "electropositive channel" in which heparin sulfated groups interact with p17 basic amino acids, promoting its dimerization. Heparin family with sequence similarity 72 member B Homo sapiens
5 Molecular dynamics show that, in the presence of heparin, two p17 molecules undergo conformational modifications creating a continuous "electropositive channel" in which heparin sulfated groups interact with p17 basic amino acids, promoting its dimerization. Heparin family with sequence similarity 72 member B Homo sapiens
6 Molecular dynamics show that, in the presence of heparin, two p17 molecules undergo conformational modifications creating a continuous "electropositive channel" in which heparin sulfated groups interact with p17 basic amino acids, promoting its dimerization. Heparin family with sequence similarity 72 member B Homo sapiens
7 Molecular dynamics show that, in the presence of heparin, two p17 molecules undergo conformational modifications creating a continuous "electropositive channel" in which heparin sulfated groups interact with p17 basic amino acids, promoting its dimerization. Heparin family with sequence similarity 72 member B Homo sapiens