Abstract:
:A yeast two-hybrid screen revealed that regulatory subunits (RII) of PKAII bind the Yotiao protein. Yotiao interacts with the NR1 subunit of the NMDA receptor. A purified C-terminal fragment of Yotiao binds PKAII, via an RII binding site constituted by amino acid residues 1452-1469, with a dissociation constant (K(d)) between 50 and 90 nM in vitro. A stable complex composed of Yotiao, RII and NR1 was immunoprecipitated from whole rat brain extracts. Immunostaining analysis disclosed that Yotiao, RIIbeta and NR1 colocalize in striatal and cerebellar neurons. Co-assembly of Yotiao/PKAII complexes with NR1 subunits may promote cAMP-dependent modulation of NMDA receptor activity at synapses, thereby influencing brain development and synaptic plasticity.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Feliciello A,Cardone L,Garbi C,Ginsberg MD,Varrone S,Rubin CS,Avvedimento EV,Gottesman MEdoi
10.1016/s0014-5793(99)01585-9keywords:
subject
Has Abstractpub_date
1999-12-31 00:00:00pages
174-8issue
3eissn
0014-5793issn
1873-3468pii
S0014579399015859journal_volume
464pub_type
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