Abstract:
:Two cDNA clones encoding 14-3-3 homologous proteins were isolated from Vicia faba. Deduced amino acid sequences share different degrees of homology with other plant 14-3-3 proteins. Both clones, under the control of the CaMV 35S promoter, were transformed into tobacco plants. Immunoblotting showed three different forms of ca. 31, 34, and 37 kDa, indicating a covalent modification of the expressed 14-3-3 proteins. These forms were mainly present in the microsomal fraction. Patch-clamp studies of mesophyll protoplasts of the transformants revealed a strongly enhanced K+ conductance compared to the wild type. This indicates the involvement of 14-3-3 proteins in ion channel regulation, presumably by modulating kinase activities or binding the channel.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Saalbach G,Schwerdel M,Natura G,Buschmann P,Christov V,Dahse Idoi
10.1016/s0014-5793(97)00865-xsubject
Has Abstractpub_date
1997-08-18 00:00:00pages
294-8issue
2eissn
0014-5793issn
1873-3468pii
S0014-5793(97)00865-Xjournal_volume
413pub_type
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