A virus-encoded protein called Tat is
A) a component of a cell's negative regulation against HIV.
B) a co-receptor that allows HIV to enter cells.
C) a protein used by HIV to evade host cell defenses.
D) a protein produced by HIV that interferes with transcription of host genes.
E) a protein used by host cells to promote HIV integration.

Question

Quizplus · Accepted Answer

Tat is a protein encoded by the HIV virus that is used to evade host cell defenses. It does this by inhibiting host cell RNA processing and export, leading to decreased expression of factors involved in anti-viral response.

A Virus-Encoded Protein Called Tat Is