The requirement for cellular transportin 3 (TNPO3 or TRN-SR2) during infection maps to human immunodeficiency virus type 1 capsid and not integrase.

Krishnan L, Matreyek KA, Oztop I, Lee K, Tipper CH, Li X, Dar MJ, Kewalramani VN, Engelman A
J Virol. 2010 Jan;84(1):397-406. doi: 10.1128/JVI.01899-09. Epub 2009 Oct 21. PubMed Article

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