rdf:type |
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lifeskim:mentions |
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pubmed:issue |
3
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pubmed:dateCreated |
2007-1-22
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pubmed:databankReference |
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pubmed:abstractText |
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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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Feb
|
pubmed:issn |
0960-894X
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:day |
1
|
pubmed:volume |
17
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
|
pubmed:pagination |
628-35
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pubmed:meshHeading |
pubmed-meshheading:17127057-Binding Sites,
pubmed-meshheading:17127057-Carbonic Anhydrases,
pubmed-meshheading:17127057-Crystallography, X-Ray,
pubmed-meshheading:17127057-Cytosol,
pubmed-meshheading:17127057-Enzyme Activators,
pubmed-meshheading:17127057-Epinephrine,
pubmed-meshheading:17127057-Histamine,
pubmed-meshheading:17127057-Isoenzymes,
pubmed-meshheading:17127057-Kinetics,
pubmed-meshheading:17127057-Magnetic Resonance Spectroscopy,
pubmed-meshheading:17127057-Models, Molecular,
pubmed-meshheading:17127057-Molecular Conformation
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pubmed:year |
2007
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pubmed:articleTitle |
Carbonic anhydrase activators: L-Adrenaline plugs the active site entrance of isozyme II, activating better isoforms I, IV, VA, VII, and XIV.
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pubmed:affiliation |
Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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