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. 2019 Jul 3;20(13):3278. doi: 10.3390/ijms20133278

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Schematic representation of major splicing regulators: serine-arginine-rich (SR) proteins and heterogeneous nuclear ribonucleoproteins (hnRNPs). (A) Structure of human SR proteins. Current serine-arginine-rich splicing factor (SRSF) names are shown on the left together with the protein aliases. RBD: RNA-binding domain (also known as RNA recognition motif (RRM)), RS: arginine-serine dipeptide repeat-rich region, Zn: Zn-binding domain, ψRBD: RBD homology domain. (B) Structure of human hnRNPs. RBD: RNA-binding domain, RGG: arginine-glycine-glycine repeat-rich region, Acidic-rich: acidic amino acid residue-rich region, qRBD: non-canonical RBD, G: Glycine rich region, KH: K homology domain.