Suborganelle sensing of mitochondrial cAMP-dependent protein kinase activity.
Suborganelle sensing of mitochondrial cAMP-dependent protein kinase activity.
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DOI:
10.1021/ja909652q
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发表时间:
2010-05-05
影响因子:
15
通讯作者:
Lawrence DS
中科院分区:
文献类型:
--
作者:
Agnes RS;Jernigan F;Shell JR;Sharma V;Lawrence DS
A fluorescent sensor of protein kinase activity has been developed and used to characterize the compartmentalized location of cAMP-dependent protein kinase activity in mitochondria. The sensor functions via a phosphorylation-induced release of a quencher from a peptide-based substrate, producing a 150-fold enhancement in fluorescence. The quenching phenomenon transpires via interaction of the quencher with Arg residues positioned on the peptide substrate. Although the cAMP-dependent protein kinase is known to be present in mitochondria, the relative amount of enzyme positioned in the major compartments (outer membrane, intermembrane space, and the matrix) of the organelle is unclear. The fluorescent sensor developed in this study was used to reveal the relative matrix:intermembrane space:outer membrane (85:6:9) distribution of PKA in bovine heart mitochondria.
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影响因子:
16.6
作者:
Sharma, Vyas;Lawrence, David S.
通讯作者:
Lawrence, David S.
影响因子:
2.9
作者:
BURNETTE, B;BATRA, PP
通讯作者:
BATRA, PP
影响因子:
3.5
作者:
Sardanelli, Anna Maria;Signorile, Anna;Papa, Sergio
通讯作者:
Papa, Sergio
影响因子:
4.1
作者:
SCHWOCH, G;TRINCZEK, B;BODE, C
通讯作者:
BODE, C
影响因子:
3.3
作者:
HAROOTUNIAN, AT;ADAMS, SR;TSIEN, RY
通讯作者:
TSIEN, RY