Human protein: transcriptional activator protein Pur-alpha
Human protein sequence: MADRDSGSEQGGAALGSGGSLGHPGSGSGSGGGGGGGGGGGGSGGGGGGAPGGLQHETQELASKRVDIQNKRFYLDVKQNAKGRFLKIAEVGAGGNKSRLTLSMSVAVEFRDYLGDFIEHYAQLGPSQPPDLAQAQDEPRRALKSEFLVRENRKYYMDLKENQRGRFLRIRQTVNRGPGLGSTQGQTIALPAQGLIEFRDALAKLIDDYGVEEEPAELPEGTSLTVDNKRFFFDVGSNKYGVFMRVSEVKPTYRNSITVPYKVWAKFGHTFCKYSEEMKKIQEKQREKRAACEQLHQQQQQQQEETAAATLLLQGEEEGEED

HIV protein: Tat
Interaction type: inhibits
Description: Puralpha self-associates in an RNA dependent manner, an effect that is inhibited by HIV-1 Tat
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Tat
Interaction type: binds
Description: Binding of HIV-1 Tat to Puralpha is mediated through amino acids 49-72 of Tat and 100-121 of Puralpha, and is enhanced by RNA
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Tat
Interaction type: inhibits
Description: Puralpha-mediated inhibition of protein translation can be inhibited by HIV-1 Tat
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Tat
Interaction type: cooperates with
Description: HIV-1 Tat cooperates with Puralpha, cyclin T1, and CDK9 to activate the TNFalpha promoter and upregulate TNFalpha expression
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Tat
Interaction type: binds
Description: HIV-1 Tat downregulates the expression of p35, a neuron-specific activator of cdk5, and also binds to Puralpha, which associates with cdk5, leading to deregulation of neuronal differentiation and survival
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Tat
Interaction type: inhibits
Description: Expression of HIV-1 Tat in human SK-N-MC cells inhibits the NGF-signaling pathway leading to suppression of MAPK and reduction of Puralpha binding to the Egr-1 promoter
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Tat
Interaction type: modulates
Description: HIV-1 Tat proteins from different clades modulate differently Pur-alpha and SMAD4 to bind the JCV non-coding control region and affect differently on SMAD4 localization to the nucleus
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Tat
Interaction type: regulated by
Description: Puralpha interacts with HIV-1 Tat to regulate the effect of Tat transactivating the HIV-1 LTR promoter, as well as the JCV promoter and other cellular promoters
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Rev
Interaction type: co-localizes with
Description: HIV-1 Rev and PURA colocalize in the perinuclear compartment.  The 18-50 amino-acid residues of Rev interact with the region of amino acids 73-123 in PURA
HIV protein sequence: MAGRSGDSDEELIRTVRLIKLLYQSNPPPNPEGTRQARRNRRRRWRERQRQIHSISERILGTYLGRSAEPVPLQLPPLERLTLDCNEDCGTSGTQGVGSPQILVESPTVLESGTKE

HIV protein: Rev
Interaction type: interacts with
Description: The interaction of Puralpha with HIV-1 RRE RNA occurs in the cytoplasm and enhances the association of HIV-1 Rev with the RRE
HIV protein sequence: MAGRSGDSDEELIRTVRLIKLLYQSNPPPNPEGTRQARRNRRRRWRERQRQIHSISERILGTYLGRSAEPVPLQLPPLERLTLDCNEDCGTSGTQGVGSPQILVESPTVLESGTKE