Diversity of human U2AF splicing factors
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Updated: Jul 19, 2026

Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells
Published on: April 26, 2017
Inês Mollet1, Nuno L Barbosa-Morais, Jorge Andrade
1Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenue Prof. Egas Moniz, 1649-028 Lisbon, Portugal.
Abstract:
U2 snRNP auxiliary factor (U2AF) is an essential heterodimeric splicing factor composed of two subunits, U2AF(65) and U2AF(35). During the past few years, a number of proteins related to both U2AF(65) and U2AF(35) have been discovered. Here, we review the conserved structural features that characterize the U2AF protein families and their evolutionary emergence. We perform a comprehensive database search designed to identify U2AF protein isoforms produced by alternative splicing, and we discuss the potential implications of U2AF protein diversity for splicing regulation.
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