Multimedia Gallery
May 25, 2005
Images and other media in the National Science Foundation Multimedia Gallery are available for use in print and electronic material by NSF employees, members of the media, university staff, teachers and the general public. All media in the gallery are intended for personal, educational and nonprofit/non-commercial use only.
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
Propeller-molecules derived from amino acids
Propeller-molecules derived from amino acids can be interconverted between left- and right-handed forms by adding or removing of an electron.
This work was supported by National Science Foundation grant CHE 00-79072. (Year of image: 2003)
Credit: Figure by Homar Barcena, adapted from Barcena, H.S.; Holmes, A.E.; Zahn, S.; Canary, J.W. "Inversion of Helicity in Propeller-Shaped Molecules Derived from S-Methyl Cystine and Methioninol," Org. Len., 2003, 5,
Images and other media in the National Science Foundation Multimedia Gallery are available for use in print and electronic material by NSF employees, members of the media, university staff, teachers and the general public. All media in the gallery are intended for personal, educational and nonprofit/non-commercial use only.
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
Also Available:
Download the high-resolution TIFF version of the image. (3 MB)
Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.