Figure 4From: Characterization of the invariable residue 51 mutations of human immunodeficiency virus type 1 capsid protein on in vitro CA assembly and infectivityTurbidity assay showing the effects of CAp24 mutations on in vitro CA assembly. Turbidity assay showing the increase in light absorbance after addition of 2.0 M NaCl to recombinantly produced mutant and wild type CAp24 protein (100 μM) reflecting the assembly of the CAp24 protein into tubular structures. Green, D51E; red, D51Q; blue, wild type; pink, D51N. The structures of polymerized CAp24 structures were also analyzed by transmission electron microscopy (Figure 5).Back to article page