Crystallization and preliminary crystallographic study of beta-momorcharin

Beta-Momorcharin from seeds of Momordica charantia, Cucurbitaceae Linn, has been crystallized using a vapor diffusion method. The crystals belong to space group P1 with unit cell parameters: a = 49.09 A, b = 50.58 A, c = 61.12 A, alpha = 72.98 degrees, beta = 78.39 degrees, gamma = 76.97 degrees. There are two molecules in the unit cell and the diffraction data up to 2.4 A resolution were collected on an X-200B area detector, giving an Rmerge of 7.8%.