HIV TAT Protein

**Semantic type:** Amino Acid, Peptide, or Protein|Biologically Active Substance

**Definition:** A nucleolar, HIV-encoded transcriptional regulator that binds to the RNA Trans-Activating Responsive (TAR) sequence. TAT activates transcription initiation and/or elongation from the LTR promoter. TAT may bind Cyclin T1. (from SWISS-PROT P24738 and NCI)

**Synonyms:** - TAT - Trans-Activation of Transcription Protein - Trans-Activator of Transcription of HIV - Transactivating Regulatory Protein