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Cooperativity

Cooperativity

phenomenon displayed by enzymes or receptors that have multiple binding sites. Binding of one ligand alters the affinity of the other site. Both positive and negative cooperativity are known, positive cooperativity gives rise to a sigmoidal binding curve. Cooperativity is often invoked to account for nonlinearity of binding data, although it is by no means the only possible cause.


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Biology IQ test: How smart are you = look

... likely be subject to ubiquitination. 7) A particular enzyme is likely subject to only a few forms of the regulation we discussed in lecture. 8) Cooperativity is rare in enzymes with tertiary structure. 9) Glycolysis is inefficient and therefore rarely found in present day organisms. 10) Metabolic ...

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by DemiMike
Sat Nov 28, 2009 6:21 am
 
Forum: General Discussion
Topic: Biology IQ test: How smart are you = look
Replies: 3
Views: 11844

Please help me with couple of bio questions.. Plzz

... True or false . 12) Unabated at the current rate, cyclic photosynthesis will one day convert all available planetary water into oxygen. 8.) Cooperativity is rare in enzymes with tertiary structure. 9) Glycolysis is inefficient and therefore rarely found in present day organisms. 19) The ...

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by DemiMike
Sat Nov 28, 2009 4:34 am
 
Forum: General Discussion
Topic: Please help me with couple of bio questions.. Plzz
Replies: 1
Views: 1392

an odd-appearing Michaelis-Menten curve

... and you just haven't increased the substrate concentration enough to reach saturation. Another possibility is that you've got some kind of funny cooperativity going on. (The standard Michaelis-Menton curve is sigmoidal-at least it is prior to doing things like Lineweaver-Burking or Eadie-Hofsteadering.)

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by blcr11
Fri Jul 27, 2007 10:35 am
 
Forum: Molecular Biology
Topic: an odd-appearing Michaelis-Menten curve
Replies: 3
Views: 2019

The Fiber Disease

... by Alfred Kastler in the 1950's, the invention of masers and lasers in the 1960's, and the extension of the concepts of non-equilibricity and cooperativity from the molecular level into the domain of electromagnetics by Herbert Fröhlich (Fröhlich, 1968), including his work on coherence and ...

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by Nadas Moksha
Fri Nov 17, 2006 2:26 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5411626


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