TY - JOUR EP - 508 A1 - Meyer, David I. A1 - Dobberstein, Bernhard UR - https://archiv.ub.uni-heidelberg.de/volltextserver/8481/ N2 - When rough microsomes are subjected to limited proteolysis and high salt, a soluble fraction can be separated from the membrane . Neither fraction alone is capable of vectorially translocating nascent peptides . When the soluble extract is recombined with the residual membrane fraction, translocating activity is restored . Standard biochemical techniques were used to identify and characterize the active component derived by treating rough microsomes with elastase and high salt. The active factor is a peptide fragment with an apparent molecular weight of 60,000. It represents the cytoplasmic domain of a larger membrane protein. The fragment is basic and has at least one accessible sulfhydryl group. These characteristics facilitated its purification and identification as a membrane component required for translocation of nascent peptides across microsomal membranes. AV - public Y1 - 1980/// TI - Identification and Characterization of a Membrane Component Essential for the Translocation of Nascent Proteins across the Membrane of the Endoplasmic Reticulum VL - 87 SP - 503 ID - heidok8481 JF - THE JOURNAL OF CELL BIOLOGY ER -