'Little Elongation Complex' (IMAGE) Stowers Institute for Medical Research Caption The “Little Elongation Complex” is required for transcriptional elongation of small nuclear RNAs by RNA polymerase II (Pol II). Ice1, a subunit of the LEC (green) is associated with snRNA genes on Drosophila polytene chromosomes. Ser2 phosphorylated Pol II is shown in red. Credit Image: Courtesy of the Shilatifard lab, Stowers Institute for Medical Research Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.