Substrate and inhibitor specificities have been used to classify
esterases. The purpose of this work was to determine the substrate
and inhibitor specificities of the esterases in an aquous extract of
lyophilyzed carrots.
Esterase activity was determined manometrically at 37°C. The
optimum pH of the carrot esterases with several substrates...
The spectrophotometric titration of the tyrosine residues,
their reaction with N-acetylimidazole, and the effect of pH on the
thermally induced conformational transition of ribonuclease T₁ have
been investigated. The results of spectrophotometric titration in
0.20 M KCl/0.001 M sodium phosphate suggest that titration of the
tyrosine residues occurs in two...
More than 2,000 male newts were collected during the summer
and maintained unfed at 10°C both pre- and post-irradiation.
Exposures ranging up to 30 kR were given with 300 kVp X-rays and
⁶⁰Co gamma rays. Half of the newts were injected (I. P.) with 15 g
DMSO/kg (the maximum sublethal...
Investigations were undertaken to study in detail the
responses of the Easter lily bulb, Lilium longiflorum
Thunb., to storage. The primary objectives were 1) to
characterize the morphological response of the plants to a
range of conditions during bulb storage and 2) to identify
those factors controlling floral initiation. 'Croft',...
The Federal Republic of Nigeria, on the west coast of the continent of Africa, is divided into four Regions: Northern, Western, Midwestern and Eastern. The Federal Capital of the country is Lagos. Eastern Nigeria occupies the south-eastern portion of the country, nearest to the Federal Republic of Cameroun.
The propensity...
An attempt to determine the relationship between the computer,
the computer program exchange organization and today's practicing
civil engineer has just been completed. A questionnaire was used to
obtain information and opinions from 850 selected practicing civil
engineers. Based on those questionnaires reaching their addresses,
a return rate of 81.7...
The vegetation of the Oregon coast is characterized by a
variety of stages of plant succession which are repeated widely
throughout the sand dune area. During the years from 1960 to 1963
the gradation of upland sand dune succession was studied on 48 plots
within a 150 mile section of...