2hkk: Difference between revisions

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[[Image:2hkk.jpg|left|200px]]
{{Seed}}
[[Image:2hkk.png|left|200px]]


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{{STRUCTURE_2hkk|  PDB=2hkk  |  SCENE=  }}  
{{STRUCTURE_2hkk|  PDB=2hkk  |  SCENE=  }}  


'''Carbonic anhydrase activators: Solution and X-ray crystallography for the interaction of andrenaline with various carbonic anhydrase isoforms'''
===Carbonic anhydrase activators: Solution and X-ray crystallography for the interaction of andrenaline with various carbonic anhydrase isoforms===




==Overview==
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The activation of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1) with L-adrenaline and histamine has been investigated by kinetic and X-ray crystallographic studies. L-Adrenaline behaves as a potent activator of isozyme CA I (activation constant of 90 nM), being a much weaker activator of isozyme CA II (activation constant of 96 microM). Isoforms CA IV, VA, VII, and XIV were activated by L-adrenaline with K(A)s in the range of 36-63 microM. The X-ray crystal structure of the CA II-L-adrenaline adduct revealed that the activator plugs the entrance of the active site cavity, obstructing it almost completely.
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{{ABSTRACT_PUBMED_17127057}}


==About this Structure==
==About this Structure==
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[[Category: Carbonic anhydrase]]
[[Category: Carbonic anhydrase]]
[[Category: Crystal structure]]
[[Category: Crystal structure]]
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