Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Proc. Natl. Acad. Sci. USA Vol. 96, pp. 78837887, July 1999
 

Summary: Proc. Natl. Acad. Sci. USA
Vol. 96, pp. 78837887, July 1999
Biophysics
Self-assembly of helical ribbons
YEVGENIYA V. ZASTAVKER*, NEER ASHERIE*, ALEKSEY LOMAKIN*, JAYANTI PANDE*, JOANNE M. DONOVAN,
JOEL M. SCHNUR, AND GEORGE B. BENEDEK*
*Department of Physics, Center for Materials Science and Engineering, and Materials Processing Center, Massachusetts Institute of Technology, Cambridge, MA
02139-4307; Department of Medicine, Brockton West Roxbury Veterans Affairs Medical Center, West Roxbury, MA 02132; Brigham and Women's Hospital,
Harvard Medical School, Boston, MA 02115; and Naval Research Laboratory, Center for Bio Molecular Science and Engineering, Washington, DC 20375-5348
Contributed by George B. Benedek, May 7, 1999
ABSTRACT The self-assembly of helical ribbons is exam-
ined in a variety of multicomponent enantiomerically pure
systems that contain a bile salt or a nonionic detergent, a
phosphatidylcholine or a fatty acid, and a steroid analog of
cholesterol. In almost all systems, two different pitch types of
helical ribbons are observed: high pitch, with a pitch angle of
54 2, and low pitch, with a pitch angle of 11 2. Although
the majority of these helices are right-handed, a small pro-
portion of left-handed helices is observed. Additionally, a
third type of helical ribbon, with a pitch angle in the range

  

Source: Asherie, Neer - Departments of Physics & Biology, Yeshiva University
Benedek, George B. - Department of Physics, Massachusetts Institute of Technology (MIT)

 

Collections: Biology and Medicine; Physics