NDLI: Transcription factor phosphorylation by a protein kinase associated with chloroplast RNA polymerase from mustard (Sinapis alba)

Content Provider	Springer Nature Link
Author	Baginsky, Sacha Tiller, Kai Link, Gerhard
Copyright Year	1997
Abstract	The chloroplast transcription machinery involves multiple components with both catalytic and regulatory functions. Here we describe a serine-specific protein kinase activity that is associated with the major chloroplast RNA polymerase and phosphorylates sigma-like transcription factors in vitro. The kinase activity can be assigned to a 54 kDa polypeptide of partially purified RNA polymerase (KPC, kinase polymerase complex). This polypeptide is also present in a smaller complex that contains several putative polymerase subunits and reveals kinase activity but lacks transcription activity (KC, kinase complex). Although the 54 kDa component could not be chromatographically separated from the rest of this complex without loss of activity, it retained residual kinase activity in an electrophoretic blot assay. The polymerase-associated kinase is itself affected by in vitro phosphorylation and dephosphorylation, which raises the possibility that it is part of a signalling cascade that controls chloroplast transcription in vivo by factor phosphorylation.
Starting Page	181
Ending Page	189
Page Count	9
File Format	PDF
ISSN	01674412
Journal	Plant Molecular Biology
Volume Number	34
Issue Number	2
e-ISSN	15735028
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biochemistry Plant Sciences Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Agronomy and Crop Science

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PTK, the chloroplast RNA polymerase-associated protein kinase from mustard (Sinapis alba), mediates redox control of plastid in vitro transcription§

RNA-binding activity of the matK protein encoded by the chloroplast trnK intron from mustard (Sinapis alba L.).

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Transcription factor phosphorylation by a protein kinase associated with chloroplast RNA polymerase from mustard (Sinapis alba)

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PTK, the chloroplast RNA polymerase-associated protein kinase from mustard (Sinapis alba), mediates redox control of plastid in vitro transcription§

RNA-binding activity of the matK protein encoded by the chloroplast trnK intron from mustard (Sinapis alba L.).

Self-(in)compatibility inheritance and allele-specific marker development in yellow mustard (Sinapis alba)

RNA polymerase I holoenzyme–promoter complexes include an associated CK2-like protein kinase

Three-Dimensional Envelope and Subunit Interactions of the Plastid-Encoded RNA Polymerase from Sinapis alba

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