Table 1.

Effects of PK stimulators and inhibitors on FANCA phosphorylation

AgentMajor targetAssayEffect
PK stimulator    
 cAMP (4 μM) cAMP-dependent PK In vitro −  
 cGMP (4 μM) cGMP-dependent PK In vitro −  
 Calcium (100 μM) Calmodulin-dependent PK In vitro −  
 PMA (100 nM) Protein kinase C In vivo −  
PK inhibitor    
 cAMP inhibitor protein* (10 U/assay) cAMP-dependent PK In vitro −  
 KT5823 (1 μM) cGMP-dependent PK In vitro −  
 AIP (1 μM) Calmodulin-dependent PK In vitro −  
 Calfostin (500 nM) Protein kinase C In vitro −  
 Hypericin (50 nM) MAPK, casein kinase II In vitro −  
 PD98059 (50 μM) MAPK kinase In vivo − 
 SB203580 (10 μM) p38 MAPK In vivo −  
 Rapamycin (20 nM) FRAP In vivo −  
 Aspirin (5 mM) IKK-2 In vivo −  
  (1 mM)  In vitro − 
AgentMajor targetAssayEffect
PK stimulator    
 cAMP (4 μM) cAMP-dependent PK In vitro −  
 cGMP (4 μM) cGMP-dependent PK In vitro −  
 Calcium (100 μM) Calmodulin-dependent PK In vitro −  
 PMA (100 nM) Protein kinase C In vivo −  
PK inhibitor    
 cAMP inhibitor protein* (10 U/assay) cAMP-dependent PK In vitro −  
 KT5823 (1 μM) cGMP-dependent PK In vitro −  
 AIP (1 μM) Calmodulin-dependent PK In vitro −  
 Calfostin (500 nM) Protein kinase C In vitro −  
 Hypericin (50 nM) MAPK, casein kinase II In vitro −  
 PD98059 (50 μM) MAPK kinase In vivo − 
 SB203580 (10 μM) p38 MAPK In vivo −  
 Rapamycin (20 nM) FRAP In vivo −  
 Aspirin (5 mM) IKK-2 In vivo −  
  (1 mM)  In vitro − 

PMA indicates phorbol-12-myristate-13-acetate; AIP, autocamitide-2–related inhibitory protein; and MAPK, mitogen-activated PK.

*

Recombinant PK A heat-stable inhibitor, isoform α.

32P-labeled cells were treated with PMA for 10 minutes and in vivo phosphorylation of FANCA was estimated.

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