[Binding of glycoprotein β₂-GPI with oxidized low density lipoprotein].
Zhang. He H; Li. Jingda J; Chen. Amei A; Liu. Qingping Q
Key Findings
- Beta‑2‑GPI binds to oxidized LDL via a pocket formed by specific amino acids (Cys281‑Lys‑Asn‑Lys‑Glu‑Lys‑Lys287 and Leu313‑Ala‑Phe‑Trp316).
- The binding involves the carboxyl group of oxLDL (oxLig‑1).
- The interaction was confirmed with fluorescence, circular dichroism, SDS‑PAGE, Western blot, and molecular docking simulations.
Practical Outcomes
- For biohackers or self‑experimenters, this research does not provide any actionable protocol, dosage, or health benefit. It is a basic molecular description that may inform future drug development, but it has no immediate relevance to longevity, metabolic health, or performance optimization.
Summary
The study looks at how a specific protein fragment (beta‑2‑GPI) sticks to oxidized LDL particles in a test‑tube, using lab techniques and computer models. It maps the exact spots where the two molecules bind, but it does not test any health effects or practical uses of the protein.
Abstract
We analyzed the binding of P.rβ₂-GPI-DV with ox-LDL by fluorescence, molecular simulation and circular dichroism. We used SDS-PAGE and Western blotting to identify the purity of P.rβ₂-GPI-DV, fluorescence, circular dichroism spectroscopy and molecular docking simulation to analyze the binding between P.rβ₂-GPI-DV and oxLDL. P.rβ₂-GPI-DV was specifically recognized by anti-His antibody at 12 kDa position. The chromophoric groups, the changes of secondary structure and the molecular docking simulations revealed that the active pocket formed by Cys281-Lys-Asn-Lys-Glu-Lys-Lys287 and Leu313-Ala-Phe-Trp316 of P.rβ₂-GPI-DV and the -COOH carboxyl of oxLig-1 were the key for binding. P.rβ₂-GPI combined with ox-LDL via the fifth functional domain and the -COOH group. Our findings provide theoretical basis to further study the binding between β₂-GPI and ox-LDL in serum.
Study Information
pubmed
2017
2017-01-25T00:00:00.000Z
10.13345/j.cjb.160178