Arabidopsis NAP and PIR regulate actin-based cell morphogenesis and multiple developmental processes.
Li Y, Sorefan K, Hemmann G, Bevan MW. Plant Physiol. 2004 Nov;136(3):3616-27.
...... and AtPIR caused cell morphology defects in cotyledon pavement cells and trichomes seen in mutants in ARP2/3 subunits and in plants expressing constitutively active Rop2 GTPase. The patterns and levels of actin polymerization observed in Atnap-1 and Atpir-1 mutant trichome cells and epidermal pavement cell morphology is consistent with Arabidopsis NAP and PIR proteins forming a WAVE complex that activates ARP2/3 activity. The multiple growth and developmental phenotypes of Atnap ......