Enzyme Reaction Kinetics

1980 ◽  
Vol 52 (11) ◽  
pp. 1197A-1199A
Keyword(s):  
Reaction Kinetics ◽  
Enzyme Reaction

Effect of dissociation and association on enzyme reaction kinetics

AIChE Journal ◽  
1976 ◽  
Vol 22 (5) ◽  
pp. 921-923 ◽  
Author(s):  
David B. Van Dongen ◽  
David O. Cooney
Keyword(s):  
Reaction Kinetics ◽  
Enzyme Reaction

Enzyme Reaction Kinetics

2017 ◽  
pp. 37-48
Author(s):  
Young Je Yoo ◽  
Yan Feng ◽  
Yong Hwan Kim ◽  
Camila Flor J. Yagonia
Keyword(s):  
Reaction Kinetics ◽  
Enzyme Reaction

scholarly journals A flow cytofluorimetric method for measuring enzyme reaction kinetics in intact cells

FEBS Letters ◽  
1977 ◽  
Vol 81 (1) ◽  
pp. 179-182 ◽  
Author(s):  
J.V. Watzon ◽  
S.H. Chambers ◽  
P. Workman ◽  
T.S. Horsnell
Keyword(s):  
Reaction Kinetics ◽  
Enzyme Reaction ◽  
Intact Cells

Quantum dot-based pH probe for quick study of enzyme reaction kinetics

2007 ◽  
Vol 41 (1-2) ◽  
pp. 127-132 ◽  
Author(s):  
Dahai Yu ◽  
Zhi Wang ◽  
Yan Liu ◽  
Li Jin ◽  
Yueming Cheng ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Reaction Kinetics ◽  
Enzyme Reaction ◽  
Ph Probe

Altered kinetics of AMP deaminase by myosin binding

1992 ◽  
Vol 263 (2) ◽  
pp. C294-C299 ◽  
Author(s):  
K. W. Rundell ◽  
P. C. Tullson ◽  
R. L. Terjung
Keyword(s):  
Reaction Kinetics ◽  
Enzyme Reaction ◽  
Free Enzyme ◽  
Maximal Velocity ◽  
Amp Deaminase ◽  
Contracting Muscle ◽  
Myosin Subfragment ◽  
Myosin Binding ◽  
Kinetics Of ◽  
Marked Resistance

AMP deaminase catalyzes the deamination of AMP to inosine 5'-monophosphate (IMP) and ammonia. Factors controlling the enzyme in muscle can rapidly promote high rates of IMP formation when ATP utilization exceeds supply. We evaluated whether binding of AMP deaminase to myosin, which occurs during intense contraction conditions, alters the kinetic behavior of the enzyme. Reaction kinetics of myosin-bound and free AMP deaminase were evaluated. Reaction kinetics of the free enzyme yielded a near-linear double-reciprocal plot with an expected Km of approximately 1 mM AMP concentration (AMP). In contrast, reaction kinetics of AMP deaminase became bimodal when bound to myosin. At [AMP] less than 0.15 mM, a high-affinity Km (0.05-0.10 mM) with maximal velocity approximately 20% that of free enzyme was evident. At [AMP] greater than 0.15 mM, the Km and maximal velocity values were similar to that of the free enzyme. The 10- to 20-fold higher affinity Km would allow for a higher rate of AMP deamination at the low [AMP] found physiologically. AMP deaminase binding to myosin also induced a marked resistance to orthophosphate inhibition (10 mM) in the presence of 50 microM ADP. Results were similar for purified preparations of AMP deaminase bound to myosin subfragment 2 and crude extracts obtained from contracting muscle. Our results add further support to the hypothesis that AMP deaminase binding to myosin serves an important role in control of enzyme activity in contracting muscle.

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