Structural and functional characterization of a phosphatase domain within yeast general transcription factor IIIC
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Structural and functional characterization of a phosphatase domain within yeast general transcription factor IIIC. / Taylor, Nicholas M I; Glatt, Sebastian; Hennrich, Marco L; von Scheven, Gudrun; Grötsch, Helga; Fernández-Tornero, Carlos; Rybin, Vladimir; Gavin, Anne-Claude; Kolb, Peter; Müller, Christoph W.
In: Journal of Biological Chemistry, Vol. 288, No. 21, 2013, p. 15110-15120.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Structural and functional characterization of a phosphatase domain within yeast general transcription factor IIIC
AU - Taylor, Nicholas M I
AU - Glatt, Sebastian
AU - Hennrich, Marco L
AU - von Scheven, Gudrun
AU - Grötsch, Helga
AU - Fernández-Tornero, Carlos
AU - Rybin, Vladimir
AU - Gavin, Anne-Claude
AU - Kolb, Peter
AU - Müller, Christoph W
PY - 2013
Y1 - 2013
N2 - Saccharomyces cerevisiae τ55, a subunit of the RNA polymerase III-specific general transcription factor TFIIIC, comprises an N-terminal histidine phosphatase domain (τ55-HPD) whose catalytic activity and cellular function is poorly understood. We solved the crystal structures of τ55-HPD and its closely related paralogue Huf and used in silico docking methods to identify phosphoserine- and phosphotyrosine-containing peptides as possible substrates that were subsequently validated using in vitro phosphatase assays. A comparative phosphoproteomic study identified additional phosphopeptides as possible targets that show the involvement of these two phosphatases in the regulation of a variety of cellular functions. Our results identify τ55-HPD and Huf as bona fide protein phosphatases, characterize their substrate specificities, and provide a small set of regulated phosphosite targets in vivo.
AB - Saccharomyces cerevisiae τ55, a subunit of the RNA polymerase III-specific general transcription factor TFIIIC, comprises an N-terminal histidine phosphatase domain (τ55-HPD) whose catalytic activity and cellular function is poorly understood. We solved the crystal structures of τ55-HPD and its closely related paralogue Huf and used in silico docking methods to identify phosphoserine- and phosphotyrosine-containing peptides as possible substrates that were subsequently validated using in vitro phosphatase assays. A comparative phosphoproteomic study identified additional phosphopeptides as possible targets that show the involvement of these two phosphatases in the regulation of a variety of cellular functions. Our results identify τ55-HPD and Huf as bona fide protein phosphatases, characterize their substrate specificities, and provide a small set of regulated phosphosite targets in vivo.
KW - Crystallography, X-Ray
KW - Molecular Docking Simulation
KW - Phosphoric Monoester Hydrolases/chemistry
KW - Protein Structure, Tertiary
KW - Saccharomyces cerevisiae/enzymology
KW - Saccharomyces cerevisiae Proteins/chemistry
KW - Transcription Factors, TFIII/chemistry
U2 - 10.1074/jbc.M112.427856
DO - 10.1074/jbc.M112.427856
M3 - Journal article
C2 - 23569204
VL - 288
SP - 15110
EP - 15120
JO - Journal of Biological Chemistry
JF - Journal of Biological Chemistry
SN - 0021-9258
IS - 21
ER -
ID: 194521274