It has been reported that high concentrations of reduced diphosphopyridine nucleotide as well as l,lO(ortho)-phenanthroline will cause dissociation of crystalline beef liver glutamic dehydrogenase as observed by the sedimentation behavior of the enzyme in the ultracentrifuge (1). Although this enzyme undergoes dissociation upon dilution (2), the effect of DPNH or l,lO-phenanthroline may be obta...

Gravitropism is a process that allows plant organs to guide their growth relative to the gravity vector. It requires them to sense changes in their orientation and generate a biochemical signal that they transmit to the tissues that drive organ curvature. Trafficking between the plasma membrane and endosomal compartments is important for all of these phases of the gravitropic response. The sedi...

Nicotiana tabacum pollen tubes contain two high molecular weight polypeptides (about 400 kDa), which are specifically expressed during pollen germination and pollen tube growth in BK medium. The high molecular weight doublet resembles the dynein heavy chains in some biochemical properties. Sedimentation profiles of pollen tube extracts show that the high molecular weight bands have sedimentatio...

The starch statolith hypothesis of gravity sensing in plants postulates that the sedimentation of statoliths in specialized statocytes (columella cells) provides the means for converting the gravitational potential energy into a biochemical signal. We have analyzed the sedimentation kinetics of statoliths in the central S2 columella cells of Arabidopsis thaliana. The statoliths can form compact...

The starch statolith hypothesis of gravity sensing in plants postulates that the sedimentation of statoliths in specialized statocytes (columella cells) provides the means for converting the gravitational potential energy into a biochemical signal. We have analyzed the sedimentation kinetics of statoliths in the central S2 columella cells of Arabidopsis thaliana. The statoliths can form compact...

the blood biochemical parameters were investigated in a yak (bos grunniens l) after intravenous administration of 5 mg/kg enrofloxacin. blood samples were collected from the jugular vein daily for 5 days after the drug administration. heparinized bloods were collected for mean corpuscular volume (mcv), erythrocyte sedimentation rate (esr), hemoglubin (hb) estimation and serum was collected for ...

The blood biochemical parameters were investigated in a yak (Bos grunniens L) after intravenous administration of 5 mg/kg enrofloxacin. Blood samples were collected from the jugular vein daily for 5 days after the drug administration. Heparinized bloods were collected for mean corpuscular volume (MCV), erythrocyte sedimentation rate (ESR), hemoglubin (Hb) estimation and...

A proteolytic enzyme was isolated from human senile cataractous lens by anion-exchange and gel-filtration chromatography. Sedimentation and zoneelectrophoretic experiments indicated a high degree of homogeneity for the enzyme. A molecular weight of 27000 was calculated from measurements of sedimentation velocity and diffusion coefficient. Chelating agents decreased activity which could be resto...