Structure−Activity Relationships in the Binding of Chemically Derivatized CD4 to gp120 from Human Immunodeficiency Virus
摘要:
The first step in HIV infection is the binding of the envelope glycoprotein gp120 to the host cell receptor CD4. An interfacial "Phe43 cavity" in gp120, adjacent to residue Phe43 of gp120-bound CD4, has been suggested as a potential target for therapeutic intervention. We designed a CD4 mutant (D1D2F43C) for site-specific coupling of compounds for screening against the cavity. Altogether, 81 cysteine-reactive compounds were designed, synthesized, and tested. Eight derivatives exceeded the affinity of native D1D2 for gp 120. Structure-activity relationships (SAR) for derivatized CD4 binding to gp 120 revealed significant plasticity of the Phe43 cavity and a narrow entrance. The primary contacts for compound recognition inside the cavity were found to be van der Waals interactions, whereas hydrophilic interactions were detected in the entrance. This first SAR on ligand binding to an interior cavity of gp 120 may provide a starting point for structure-based assembly of small molecules targeting gp120-CD4 interaction.
SAMRETH, SOTH;MILLET, JEAN;BELLAMY, FRANCOIS;BAJGROWICZ, JERZY
作者:SAMRETH, SOTH、MILLET, JEAN、BELLAMY, FRANCOIS、BAJGROWICZ, JERZY
DOI:——
日期:——
US5101048A
申请人:——
公开号:US5101048A
公开(公告)日:1992-03-31
US5246961A
申请人:——
公开号:US5246961A
公开(公告)日:1993-09-21
Structure−Activity Relationships in the Binding of Chemically Derivatized CD4 to gp120 from Human Immunodeficiency Virus
作者:Hui Xie、Danny Ng、Sergey N. Savinov、Barna Dey、Peter D. Kwong、Richard Wyatt、Amos B. Smith、Wayne A. Hendrickson
DOI:10.1021/jm070564e
日期:2007.10.1
The first step in HIV infection is the binding of the envelope glycoprotein gp120 to the host cell receptor CD4. An interfacial "Phe43 cavity" in gp120, adjacent to residue Phe43 of gp120-bound CD4, has been suggested as a potential target for therapeutic intervention. We designed a CD4 mutant (D1D2F43C) for site-specific coupling of compounds for screening against the cavity. Altogether, 81 cysteine-reactive compounds were designed, synthesized, and tested. Eight derivatives exceeded the affinity of native D1D2 for gp 120. Structure-activity relationships (SAR) for derivatized CD4 binding to gp 120 revealed significant plasticity of the Phe43 cavity and a narrow entrance. The primary contacts for compound recognition inside the cavity were found to be van der Waals interactions, whereas hydrophilic interactions were detected in the entrance. This first SAR on ligand binding to an interior cavity of gp 120 may provide a starting point for structure-based assembly of small molecules targeting gp120-CD4 interaction.
Photothermal Conversion by Carbon Black Facilitates Aryl Migration by Photon‐Promoted Temperature Gradients
作者:Megan E. Matter、Lejla Čamdžić、Erin E. Stache
DOI:10.1002/anie.202308648
日期:2023.10.2
Photothermal conversion enables thermal gradients that facilitate high activation barrier reactions, such as the Newman Kwart Rearrangement. Substrates normally requiring bulk temperatures >250 °C are easily converted via visible light irradiation with short reaction times. Wavelength and intensity tunability enable selective product formation.
光热转换可实现热梯度,从而促进高活化势垒反应,例如纽曼夸特重排。通常需要> 250 °C 整体温度的基材可以通过可见光照射轻松转换,反应时间短。波长和强度的可调性能够选择性地形成产物。