Journal
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 300, Issue 4, Pages 862-867Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0006-291X(02)02945-5
Keywords
WW domain; PPxY motif; C2 domain; calcium binding; phage display; synaptic architecture
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In a yeast two hybrid screen with the human isoform of Dendrin (KIAA0749), a putative modulator of the postsynaptic cytoskeleton, we isolated a cDNA coding for a novel protein, KIBRA, possessing two amino-terminal WW domains, an internal C-2-like domain and a carboxy-terminal glutamic acid-rich stretch. Northern blot analysis revealed that the expression of KIBRA mRNA was predominately found in kidney and brain. In vitro interaction studies revealed that the first KIBRA WW domain binds specifically to PPxY motifs. Transient transfection of monkey kidney cells with constructs encoding Myc-tagged KIBRA displayed a cytoplasmic localization and a perinuclear enrichment of the protein. (C) 2002 Elsevier Science (USA). All rights reserved.
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