labeled membrane proteins by density gradient ultracentrifugation using 1 O%-40% sucrose gradients containing the nonionic detergent. Studies were performed using soluble proteins derived from membranes isolated in the presence or absence of EDTA. Analysis of gradient fractions by SDS-polyacrylamide gel electrophoresis showed that in the absence of divalent cation chelation. GP lIb and lIla pen...

Large amounts of a heat-inducible phage lambda mutant (lambdaCI857) may be obtained under standardized conditions. The phage is harvested by simple polyethylene glycol (C 6000) precipitation and purified by CsCl density gradient banding. Deoxyribonucleic acid (DNA) is extracted by cold phenol and purified by sucrose density gradient sedimentation to yield a homogenous population of unbroken lam...

labeled membrane proteins by density gradient ultracentrifugation using 1 O%-40% sucrose gradients containing the nonionic detergent. Studies were performed using soluble proteins derived from membranes isolated in the presence or absence of EDTA. Analysis of gradient fractions by SDS-polyacrylamide gel electrophoresis showed that in the absence of divalent cation chelation. GP lIb and lIla pen...

BACKGROUND Developmental and global regulation of mRNA translation plays a major role in regulating gene expression in mammalian spermatogenic cells. Sucrose gradients are widely used to analyze mRNA translation. Unfortunately, the information from sucrose gradient experiments is often compromised by the absence of quantification and absorbance tracings, and confusion about the basic properties...

labeled membrane proteins by density gradient ultracentrifugation using 1 O%-40% sucrose gradients containing the nonionic detergent. Studies were performed using soluble proteins derived from membranes isolated in the presence or absence of EDTA. Analysis of gradient fractions by SDS-polyacrylamide gel electrophoresis showed that in the absence of divalent cation chelation. GP lIb and lIla pen...

BACKGROUND AND AIMS Around the time of anthesis, young ovary development in maize (Zea mays) is vulnerable to 2 or 3 d of water deficits that inhibit photosynthesis. Abortion can result, and fewer kernels are produced. A breakdown of stored ovary starch is associated with the abortion and was investigated in the present study by localizing the breakdown product glucose in the ovaries. METHODS...

labeled membrane proteins by density gradient ultracentrifugation using 1 O%-40% sucrose gradients containing the nonionic detergent. Studies were performed using soluble proteins derived from membranes isolated in the presence or absence of EDTA. Analysis of gradient fractions by SDS-polyacrylamide gel electrophoresis showed that in the absence of divalent cation chelation. GP lIb and lIla pen...

C. Buttersack and K. Buchholz Institut für landwirtschaftliche Technologie und Zuckerindustrie an der TU Braunschweig, TU Braunschweig, Langer Kamp 5, D-38106 Braunschweig, Bundesrepublik Deutschland Z. Naturforsch. 49c, 258-264 (1994); received December 2,1993 Diffusion, Sucrose, Water, Aqueous Solution The self diffusion coefficients D of the water molecules and of sucrose have been deter­ mi...