Continuous chromatin changes

Changes in chromatin proteins during liver regeneration.

The metabolism of chromatin proteins of rat liver has been examined during the prereplicative period following partial hepatectomy. Within 8 hours after partial hepatectomy, isolated chromatin exhibits a 7% decrease in its histone to DNA mass ratio compared to sham-operated and zero time controls. The time course and amount of this decline correlate well with the previously published pattern of...

Conformational changes of the chromatin subunit.

Hydrodynamic studies on monomer chromatin subunits (v1) as a function of ionic strength (0.7 mM to 100 mM KCl) indicate two salt-dependent conformational transitions. An abrupt transition occurs at about 7.5 mM ionic strength. Decreasing the ionic strength from 10 to 5 mM results in a decrease in s20,w of the v1 from 11.1 to 9.9 S. The diffusion coefficient D20,w decreases from 3.3 to 2.7 X 10(...

Haemodynamic changes during continuous exercise.

Management of Continuous Spatial Changes

Two distinct approaches can be identified in the modelling of spatial data, one that considers discrete spatial objects and another that considers continuous spatial changes. The first approach fits better cartographic applications whereas the second is commonly used in the modelling of continuous changes of physical phenomena such as temperature, elevation, atmospheric pressure, etc. Due to th...

Stress-Induced Chromatin Changes: A Critical View on Their Heritability

The investigation of stress responses has been a focus of plant research, breeding and biotechnology for a long time. Insight into stress perception, signaling and genetic determinants of resistance has recently been complemented by growing evidence for substantial stress-induced changes at the chromatin level. These affect specific sequences or occur genome-wide and are often correlated with t...