(n.) An unorganized or unformed ferment, in distinction from an organized or living ferment; a soluble, or chemical, ferment. Ptyalin, pepsin, diastase, and rennet are good examples of enzymes.
Example Sentences:
(1) In contrast, DNA polymerase alpha, the enzyme involved in chromosomal DNA replication, was relatively insensitive to CA1.
(2) The accumulation of lipids and enzymes such as simple estarase, lipase, beta-HDH, alpha-GDH and NADPH-reductase in those areas, suggests that lipids are not a simple excretory product.
(3) It was found that the skeletal muscle enzyme of the chick embryo is independent of the presence of creatine and consequently is another constitutive enzyme like the creatine kinase of the early embryonic chick heart.
(4) Previous attempts to purify this enzyme from the liquid endosperm of kernels of Zea mays (sweet corn) were not entirely successful owing to the lability of partially purified preparations during column chromatography.
(5) These results demonstrate that increased availability of galactose, a high-affinity substrate for the enzyme, leads to increased aldose reductase messenger RNA, which suggests a role for aldose reductase in sugar metabolism in the lens.
(6) As far as acrophase table is concerned for all enzymes and fractions the acrophase occurred during the night.
(7) This theory was confirmed by product analysis and by measuring the affinity of the substrate for the enzyme by its inhibition of p-nitrophenyl glucoside hydrolysis.
(8) This result demonstrates that branching enzyme belongs to a family of the amylolytic enzymes.
(9) These results are discussed in relation to the possible existence of enzyme-bound intermediates of nitrogen fixation.
(10) During enzyme purification two nucleases were identified.
(11) Binding data for both ligands to the enzyme yielded nonlinear Scatchard plots that analyze in terms of four negatively cooperative binding sites per enzyme tetramer.
(12) In the measurement, enzyme-labeled and unlabeled antigens (Ag* and Ag) were allowed to compete in binding to the antibody (Ab) under conditions where Ag* much less than Ab much less than Ag.
(13) Nucleotide, which is essential for catalysis, greatly enhances the binding of IpOHA by the reductoisomerase, with NADPH (normally present during the enzyme's rearrangement step, i.e., conversion of a beta-keto acid into an alpha-keto acid, in either the forward or reverse physiological reactions) being more effective than NADP.
(14) The enzyme, when assayed as either a phospholipase A2 or lysophospholipase, exhibited nonlinear kinetics beyond 1-2 min despite low substrate conversion.
(15) The specific limited trypsinolysis of bacteriophage T7 RNA polymerase (T7RP) was performed in the presence of various components of the polymerase reaction and some GTP-analogs--irreversible inhibitors of the enzyme.
(16) Hepatic enzyme elevations were more dramatic after blunt trauma, reflecting greater hepatocellular disruption.
(17) Treatment of the bound F1-ATPase with 4-chloro-7-nitrobenzofurazan prevented complete release of the enzyme by ATP.
(18) The enzyme was solubilized by Triton X-100 and purified approximately 480-fold by gel filtration and affinity chromatography on alanine methyl ketone-AH-Sepharose 4B.
(19) The DNA untwisting enzyme has been purified approximately 300-fold from rat liver nuclei.
(20) We have measured the antibody specificities to the two polysaccharides in sera from asymptomatic group C meningococcal carriers and vaccinated adults by a new enzyme-linked immunosorbent assay (ELISA) procedure using methylated human serum albumin for coating the group C polysaccharide onto microtiter plates.
Saliva
Definition:
(n.) The secretion from the salivary glands.
Example Sentences:
(1) A sensitive, selective and easy to use high-performance liquid chromatographic method for the determination of cicletanide, a new diuretic, in plasma, red blood cells, urine and saliva is described.
(2) Most cis AB sera have anti-B activity, essentially at 4 degrees C. In saliva A and H substances are found in normal amounts but B substance is only evidenced by inhibition of autologous cells agglutination.
(3) The antigenic composition of an extract of rat dust, as a source of aeroallergens for rat-sensitive individuals, has been investigated and compared to the antigenic composition of rat saliva and urine.
(4) None of the parotid saliva samples from the alcoholic subjects had detectable bioactivity of EGF in saliva.
(5) On day 7, washes were collected as on day 0, and a collar was attached to the neck to prevent contamination from saliva.
(6) However, no correlation was observed as far as sex, pH of saliva and smoking habits were concerned.
(7) All teeth were incubated in a saliva-like solution except during treatment.
(8) During radiotherapy, the mean volume-based concentrations of all protein components assayed increased as the saliva flow rate decreased.
(9) There were no differences between groups in saliva cortisol values in either of the two experiments.
(10) In eight consecutive patients referred to the University of Queensland Dental School for investigation of tooth surface loss, six had no measurable quantities of resting whole saliva, four had low values for stimulated saliva flow rates, and only two patients had buffer capacities within the normal range.
(11) Compared with juvenile and adult controls, a significantly greater number of "fast isoamylases" was found in the parotid saliva of children with cystic fibrosis and their healthy heterozygous parents.
(12) The amount of free testosterone in the saliva was also ascertained for 23 of the subjects.
(13) Good to excellent results were found in more than 85 percent of them in the control saliva, and there have been no recurrences or fistulae.
(14) The responsible allergens are contained in the urine, saliva, and secretions of furred animals.
(15) A relatively large error was found in predicting serum levels from saliva.
(16) We have reviewed the functions of salivary secretions and the major role that saliva plays in maintaining oral homeostasis by protection, repair, and lubrication as well as in the initial phase of digestion.
(17) The addition of chlorhexidine and saliva increased staining when used with tea.
(18) The potassium concentration of saliva collected in the absence of back pressure and at raised pressure was similar even though back pressure reduced flow.
(19) Its biological properties and its function in saliva, if any, remain to be elucidated.
(20) In order for a stone to form, the following conditions would seem to be necessary; transient supersaturation of the saliva in Ca++ and PO4--, a pH greater than normal, intracellular precepitation of amorphous tricalcium phosphate which is transformed into crystalline hydroxyapatite and, then, the fixation of crystals on a "matrix" such as desquamated cells, fibrils and collagens.