E. coli. An E. coli RNA polymerase is composed of five subunits: two Î± subunits, and one for each Î², Î²', and Ï subunit. Î² (151 kD) and Î²' (156 kD) are significantly larger than Î± (37 kD). Several different forms of Ï subunits have been identified, with molecular weights ranging from 28 kD to 70 kD.n E. coli RNA polymerase is composed of five subunits: two Î± subunits, and one for each Î², Î²', and Ï subunit. Î² (151 kD) and Î²' (156 kD) are significantly larger than Î± (37 kD). Several different forms of Ï subunits have been identified, with molecular weights ranging from 28 kD to 70 kD.
Probably everybody agrees with the statement that Tg is one of the temperatures within a glass transition region where the metastable melt transforms into glass in the course of its cooling and where glass transforms into metastable melt in the course of heating.
Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit. To convert a Fahrenheit temperature into Celsius: Tc = (5/9)*(Tf-32) For example, to convert a Fahrenheit temperature of 98.6Â°F into degrees Celsius, first subtract 32 from the Fahrenheit temperature to get 66.6. Then you multiply 66.6 by five-ninths to get 37Â°C.