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Description
Freeze fracture image of the E-face of rat bladder lumenal membrane. The lumenal surface of these epithelial cells is composed of plaques separated by interplaque regions. Within the plaques are hexagonal arrays of subunits (about 12nm, with center-to-center spacing of 15.6nm) on the E-face of the membrane. The inset panel shows these subunits at higher magnification, prepared by deep-etching rather than fracturing after freezing. At higher magnification, each subunit within the plaque appear to be composed of a ring of six particles surrounding a channel. These plaques are distinguished from gap junctions (found on the P-face of membranes) by their location on their position instead on the E-face. These micrographs courtesy of Nicholas Severs and Marian Hicks, Figure 13 from Chapter 1 (The Cell Surface) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. A PDF copy of the accompanying chapter is available on the ASCB's BioEDUCATE website. Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp) Severs, Nicholas; Hicks, Marian (2021). CIL:10919, Rattus, transitional epithelial cell. In Cell Image Library. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J03B5XZF
Type
image
Identifier
ark:/20775/bb68324864
Language
No linguistic content
Subject
Plasma membrane organization Plasma membrane Extracellular region part Transitional epithelial cell Rattus Cell Image Library Group ID: 10550
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