2,3-cis-3,4-trans-3,4-dihydroxy-L-proline: mass spectrometry and X-ray analysis.
Mass spectrometry showed the new amino acid from diatomn cell walls to be a dihydroxyproline. X-ray analysis of the unmarked free amino acid by the use of the symbolic addition procedure revealed the comnplete three-dimtensional structure as 2, 3-cis-3, 4-trans-3, 4-dihydroxy-L-proline with carbon number 3 being 0.06 angstrom above the plane of the pyrrolidine ring.
D002473:Cell Wall / Q000032:analysis*; D006909:Hydroxyproline / Q000032:analysis*; D008386:Marine Biology; D010084:Oxidation-Reduction; D010933:Plankton; D013057:Spectrum Analysis; D014961:X-Ray Diffraction
D006909:Hydroxyproline