Los polimorfismos de los subtipos entre las variantes de la proteasa del VIH-1 confieren conformaciones de colgajo

Jamie L Kear1, Mandy E Blackburn, Angelo M Veloro

  • 1Department of Chemistry, P.O. Box 117200, University of Florida, Gainesville, Florida 32611-7200, USA.

Resumen

Las variaciones de secuencia en la proteasa del virus de la inmunodeficiencia humana tipo 1 (VIH-1) afectan las conformaciones de las solapas. Estos cambios en la dinámica del colgajo influyen en el muestreo de diferentes estados conformacionales, lo que afecta la maduración viral y la posible orientación del fármaco.

Videos de Conceptos Relacionados

Inhibitors of Virion Maturation and Assembly01:19

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Leaky Scanning02:28

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...