HIV-1 is composed of two copies of single-stranded RNA enclosed by a conical capsid comprising the viral protein p24, typical of lentiviruses. The RNA component is 9749 nucleotides long. This is in turn surrounded by a plasma membrane of host-cell origin. The single-strand RNA is tightly bound to the nucleocapsid proteins, p6, p7 and enzymes that are indispensable for the development of the virion, such as reverse transcriptase and integrase. Alternative Names: HIV-1 p24 protein, Capsid protein p24 protein, HIV 1 p24 protein, HIV1 p24, Human immunodeficiency virus type 1 p24 protein, HIV 1 p24 protein, Human Immunodeficiency Virus 1 protein, HIV-1 p24 protein, HIV-1 p24, HIV 1 p24, CA protein, p24 protein