KCNE2 protein S98 phosphorylation in heart of old SHR rats detected by point mutagenesis / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
; (6): 364-370, 2007.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-271520
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the phosphorylation of KCNE2 protein in heart of old SHR rats.</p><p><b>METHODS</b>The membrane proteins from ventricular myocardium of old SHR were extracted, treated with or without alkaline phosphatase and tested binding with Ab2 (an anti-KCNE2 polyclonal antibody) by Western blot. A KCNE2 fusion protein with c-myc was obtained from in vitro translation system and treated with or without alkaline phosphatase. A series of mono- and double-point mutated fusion KCNE2 proteins with c-myc were obtained from an in vitro translation system, and Western blots with Ab2 or anti-myc antibody were performed.</p><p><b>RESULTS</b>After alkaline phosphatase treatment, Ab2 significantly attenuated its binding with KCNE2. In vitro translation system confirmed that after alkaline phosphatase treatment, Ab2 weakened binding ability to KCNE2 while binding to c-myc was not changed. Point mutation experiments showed that serine residue in position 98 of KCNE2 proteins might be phosphorylated.</p><p><b>CONCLUSION</b>KCNE2 protein in heart of old SHR rats is phosphorylated and this phosphorylation takes place in serine residue of position 98.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Phosphorylation
/
Protein Binding
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Rats, Inbred SHR
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Recombinant Fusion Proteins
/
Aging
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Blotting, Western
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Proto-Oncogene Proteins c-myc
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Point Mutation
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Potassium Channels, Voltage-Gated
/
Genetics
Limits:
Animals
Language:
Chinese
Journal:
Journal of Zhejiang University. Medical sciences
Year:
2007
Document type:
Article