human_protein_name: activated RNA polymerase II transcriptional coactivator p15
description: Through amino acids 22-91, PC4 binds to the basic TAR binding domain of HIV-1 Tat (amino acids 49-57) and enhances activation of the HIV-1 LTR promoter in a Tat dependent manner
human_protein_sequence: MPKSKELVSSSSSGSDSDSEVDKKLKRKKQVAPEKPVKKQKTGETSRALSSSKQSSSSRDDNMFQIGKMRYVSVRDFKGKVLIDIREYWMDPEGEMKPGRKGISLNPEQWSQLKEQISDIDDAVRKL