Search results
Results from the WOW.Com Content Network
Hershey and Chase concluded that DNA, not protein, was the genetic material. They determined that a protective protein coat was formed around the bacteriophage, but that the internal DNA is what conferred its ability to produce progeny inside a bacterium. They showed that, in growth, protein has no function, while DNA has some function.
The term viral protein refers to both the products of the genome of a virus and any host proteins incorporated into the viral particle. Viral proteins are grouped according to their functions, and groups of viral proteins include structural proteins , nonstructural proteins , regulatory proteins , and accessory proteins. [ 1 ]
2. mRNA that encodes the viral replication initiator protein is transcribed and subsequently translated to synthesize the protein. 3. The initiator protein binds to and cleaves the DNA within a region called the origin, which results in the hairpin unfolding into a linear, extended form.
Vpr is a Human immunodeficiency virus gene and protein product. [1] [2] Vpr stands for "Viral Protein R".Vpr, a 96 amino acid 14-kDa protein, plays an important role in regulating nuclear import of the HIV-1 pre-integration complex, and is required for virus replication and enhanced gene expression from provirus in dividing or non-dividing cells such as T cells or macrophages. [3]
It is the first step of viral replication. Some viruses attach to the cell membrane of the host cell and inject its DNA or RNA into the host to initiate infection. Attachment to a host cell is often achieved by a virus attachment protein that extends from the protein shell (), of a virus.
On the other hand, the large T antigen is required and it acts to initiate replication directly. It binds the viral origin of replication and recruits DNA polymerase and s/s DNA-binding protein such that once its concentration is great enough it blocks the transcription of early genes and initiates genome replication. It also acts to cause the ...
Hepatitis B virus DNA polymerase is a hepatitis B viral protein. [ 1 ] [ 2 ] It is a DNA polymerase that can use either DNA or RNA templates and a ribonuclease H that cuts RNA in the duplex. Both functions are supplied by the reverse transcriptase (RT) domain.
In molecular biology, Tat is a protein that is encoded for by the tat gene in HIV-1. [1] [2] Tat is a regulatory protein that drastically enhances the efficiency of viral transcription. [2] Tat stands for "Trans-Activator of Transcription". The protein consists of between 86 and 101 amino acids depending on the subtype. [3]