New fragments of integral membrane proteins, used e.g. to screen for therapeutic agents for Alzheimer's or Parkinson's diseases, are particularly from bacteriorhodopsin

摘要

Proteins (I) that represent parts of integral membrane proteins or their derivatives are new. An Independent claim is also included for production of (I) derived from bacteriorhodopsin (BR), by expressing the appropriate gene fragment in Escherichia coli, followed by purification.