TY - JOUR
T1 - Remote hot spots mediate protein substrate recognition for the Cdc25 phosphatase
AU - Sohn, J.
AU - Kristjánsdóttir, K.
AU - Safi, A.
AU - Parker, B.
AU - Kiburz, B.
AU - Rudolph, J.
PY - 2004/11/23
Y1 - 2004/11/23
N2 - Cdc25B is a phosphatase that catalyzes the dephosphorylation and activation of the cyclin-dependent kinases, thus driving cell cycle progression. We have identified two residues, R488 and Y497, located >20 Å from the active site, that mediate protein substrate recognition without affecting activity toward small-molecule substrates. Injection of Cdc25B wild-type but not the R488L or Y497A variants induces germinal vesicle breakdown and cyclin-dependent kinase activation in Xenopus oocytes. The conditional knockout of the cdc25 homolog (mih1) in Saccharomyces cerevisiae can be complemented by the wild type but not by the hot spot variants, indicating that protein substrate recognition by the Cdc25 phosphatases is an essential and evolutionarily conserved feature.
AB - Cdc25B is a phosphatase that catalyzes the dephosphorylation and activation of the cyclin-dependent kinases, thus driving cell cycle progression. We have identified two residues, R488 and Y497, located >20 Å from the active site, that mediate protein substrate recognition without affecting activity toward small-molecule substrates. Injection of Cdc25B wild-type but not the R488L or Y497A variants induces germinal vesicle breakdown and cyclin-dependent kinase activation in Xenopus oocytes. The conditional knockout of the cdc25 homolog (mih1) in Saccharomyces cerevisiae can be complemented by the wild type but not by the hot spot variants, indicating that protein substrate recognition by the Cdc25 phosphatases is an essential and evolutionarily conserved feature.
KW - Protein-protein interactions
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U2 - 10.1073/pnas.0407663101
DO - 10.1073/pnas.0407663101
M3 - Article
C2 - 15534213
AN - SCOPUS:9344254385
SN - 0027-8424
VL - 101
SP - 16437
EP - 16441
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 47
ER -