2022
DARPP-32/protein phosphatase 1 regulates Rasgrp2 as a novel component of dopamine D1 receptor signaling in striatum
Kuroiwa M, Shuto T, Nagai T, Amano M, Kaibuchi K, Nairn A, Nishi A. DARPP-32/protein phosphatase 1 regulates Rasgrp2 as a novel component of dopamine D1 receptor signaling in striatum. Neurochemistry International 2022, 162: 105438. PMID: 36351540, DOI: 10.1016/j.neuint.2022.105438.Peer-Reviewed Original ResearchConceptsProtein phosphatase 1Phosphatase 1DARPP-32Receptor-induced phosphorylationPKA-dependent phosphorylationPKA/DARPPPP1 inhibitorPP1 substratesPP1 inhibitionPKA sitesRap1 activationOkadaic acidRASGRP2Novel componentRap1GAPPhosphorylationDARPP-32 knockout micePhospho-Thr34 DARPP-32Receptor activationPKAKnockout miceReceptor stimulationPP2A.Ser499Rap1
2017
Reciprocal regulation of ARPP-16 by PKA and MAST3 kinases provides a cAMP-regulated switch in protein phosphatase 2A inhibition
Musante V, Li L, Kanyo J, Lam TT, Colangelo CM, Cheng SK, Brody AH, Greengard P, Le Novère N, Nairn AC. Reciprocal regulation of ARPP-16 by PKA and MAST3 kinases provides a cAMP-regulated switch in protein phosphatase 2A inhibition. ELife 2017, 6: e24998. PMID: 28613156, PMCID: PMC5515580, DOI: 10.7554/elife.24998.Peer-Reviewed Original ResearchConceptsARPP-16ARPP-19Protein phosphatase 2A inhibitionProtein phosphatase PP2A.Inhibition of PP2ASwitch-like responseKinase inhibitsPhosphatase PP2A.Regulatory interactionsPKA phosphorylationAntagonistic interplayReciprocal regulationBasal phosphorylationPhosphorylationMAST3PP2APKAENSAKinaseStriatal signalingPP2A.Multiple sitesInhibitionMitosisSignaling
1999
Regulation of Neurabin I Interaction with Protein Phosphatase 1 by Phosphorylation †
McAvoy T, Allen P, Obaishi H, Nakanishi H, Takai Y, Greengard P, Nairn A, Hemmings H. Regulation of Neurabin I Interaction with Protein Phosphatase 1 by Phosphorylation †. Biochemistry 1999, 38: 12943-12949. PMID: 10504266, DOI: 10.1021/bi991227d.Peer-Reviewed Original ResearchConceptsProtein phosphatase 1Neurabin IPP1 activityPhosphatase 1Two-hybrid interaction analysisActin-binding proteinsCo-immunoprecipitation experimentsMimic phosphorylationSerine 461Phosphorylated residuesGlutathione S-transferaseOverlay assaysFusion proteinSignaling mechanismGamma isoformsCAMP pathwayPhosphorylationS-transferaseProteinTryptic digestPKARegulationHPLC-MS analysisInteraction analysisS461