Fig. 5. KIS-L co-localizes with both the paused and elongating forms of Pol II. The distributions of CHD1 and Pol IIo^ser2 (A); KIS-L and Pol IIo^ser2 (B); KIS-L and Pol IIa (C); and KIS-L and Pol IIo^ser5 (D) are shown. Magnifications of the distal chromosome arm 2R are shown in A-C. A magnification of the distal chromosome arm 2L is shown in D. The distribution of KIS-L is highly coincident with all forms of Pol II, whereas CHD1 is associated primarily with the elongating form of Pol II (Pol IIo^ser2).