STRUCTURE OF YEAST RNA-POLYMERASES DETERMINED BY ELECTRON-MICROSCOPY
No Thumbnail Available
Date
1982
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Methods were developed for the examination of yeast RNA polymerases I, II and III by EM. The size and shape of a eucaryotic RNA polymerase was established for the 1st time. The enzymes are roughly spherical in shape and compact in appearance. Their measured molecular diameters are 12.7 .+-. 0.4 and 11.0 .+-. 1.4 (SD) nm for polymerase I, 12.7 .+-. 1.1 and 12.2 .+-. 1.0 (SD) nm for polymerase II and 13.6 .+-. 0.6 and 11.5 .+-. 1.3 (SD) nm for polymerase III.