Structure of human protein kinase C eta (PKCη) C2 domain and identification of phosphorylation sites

Protein kinase C eta (PKCη) is one of several PKC isoforms found in humans. It is a novel PKC isoform in that it is activated by diacylglycerol and anionic phospholipids but not calcium. The crystal structure of the PKCη-C2 domain, which is thought to mediate anionic phospholipid sensing in the prot...

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Veröffentlicht in:Biochemical and biophysical research communications 2006-11, Vol.349 (4), p.1182-1189
Hauptverfasser: Littler, Dene R., Walker, John R., She, Yi-Min, Finerty, Patrick J., Newman, Elena M., Dhe-Paganon, Sirano
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container_end_page 1189
container_issue 4
container_start_page 1182
container_title Biochemical and biophysical research communications
container_volume 349
creator Littler, Dene R.
Walker, John R.
She, Yi-Min
Finerty, Patrick J.
Newman, Elena M.
Dhe-Paganon, Sirano
description Protein kinase C eta (PKCη) is one of several PKC isoforms found in humans. It is a novel PKC isoform in that it is activated by diacylglycerol and anionic phospholipids but not calcium. The crystal structure of the PKCη-C2 domain, which is thought to mediate anionic phospholipid sensing in the protein, was determined at 1.75 Å resolution. The structure is similar to that of the PKC epsilon C2 domain but with significant variations at the putative lipid-binding site. Two serine residues within PKC eta were identified in vitro as potential autophosphorylation sites. In the unphosphorylated structure both serines line the putative lipid-binding site and may therefore play a role in the lipid-regulation of the kinase.
doi_str_mv 10.1016/j.bbrc.2006.08.160
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subjects Amino Acid Sequence
Binding Sites
C2 domain
Computer Simulation
Eta
Models, Chemical
Models, Molecular
Molecular Sequence Data
Novel isoform
Phosphorylation
PKC
Protein Binding
Protein Conformation
Protein kinase C
Protein Kinase C - chemistry
Protein Kinase C - ultrastructure
Protein Structure, Tertiary
Structure
X-ray
title Structure of human protein kinase C eta (PKCη) C2 domain and identification of phosphorylation sites
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