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Cooperativity in Biological News

Hemoglobin uncovered

...years of study have led to the knowledge that hemoglobin uses mechanisms of cooperativity to optimize its function; that is to say, to collect the greatest amount of...oxygen possible in the lungs and release it in tissues. These mechanisms of cooperativity are related to changes in the structure of the hemoglobin protein. However,...

Immune cell communication key to hunting viruses, Jefferson immunologists show

...re able to see something no one had seen before ?a very strong contribution of non-viral peptide-MHC interaction with a co-receptor," he says. "Such cooperativity we think can be achieved when MHC complexes are close to each other. "We've shown that when we try to mimic the positioning of MHC protein on qu...
Cooperativity in Biological Definition

Cooperativity

Cooperativity is a phenomenon in biology displayed by enzymes or receptors that have multiple binding sites . When substrate bonds to the active site of one enzymatic subunit, the rest of the subunits are stimulated and become active. ...

Lambda phage

...ators, OR1, OR2, and OR3, in the order OR1 > OR2 > OR3. Binding of a cI dimer to OR1 enhances binding of a second cI dimer to OR2, an effect called cooperativity . Thus, OR1 and OR2 are almost always simultaneously occupied by cI. However, this does not increase the affinity between cI and OR3, which will be...

Long-term potentiation

...ypothesis." Annu Rev Neurosci. 2000;23:649-711. PMID 10845078 McNaughton BL, Douglas RM, Goddard GV. "Synaptic enhancement in fascia dentata: cooperativity among coactive afferents." Brain Res. 1978 Nov 24;157(2):277-93. PMID 719524 Murphy GG, Glanzman DL. "Enhancement of sensorimotor connections...

Quaternary structure

...ude nucleosomes and microtubules . Changes in quaternary structure are called conformational changes . It is through such changes, which underlie cooperativity and allostery in "multimeric" enzymes, that many proteins undergo regulation and perform their physiological function. The above definition fol...

Structural biology

...rimary structure , secondary structure , tertiary structure , quaternary structure , structural domain , structural motif , protein subunit , cooperativity , chaperonin , structural genomics , Important publications in structural biology External links Nature: Structural & Molecular...
Cooperativity in Biological Dictionary

Cooperativity

Cooperativity is a phenomenon in biology displayed by enzymes or receptors that have multiple binding sites. This is referred to as cooperative binding. We also see cooperativity in large chain molecules made of many identical subunits, when such molecules undergo phase transitions such as ...

Allostery

...stery between the CT-L and the PGPH ... 3.2 Methods that measure the size of the intact complex directly ... through such changes, which underlie cooperativity and allostery in "multimeric" ... Dynamics of Biomedical Molecules in Vision, Allostery , and Folding ... Allostery down regulates the ligand...
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