Arabidopsis Arabidopsis Proteins At5g56210 protein, Arabidopsis Intracellular Signaling Peptides and Proteins Journal Article KASH Membrane Proteins Microtubule-Associated Proteins Nuclear Proteins Research Support, U.S. Gov't, Non-P.H.S. SUN SUN1 protein, Arabidopsis SUN2 protein, Arabidopsis WIT1 protein, Arabidopsis WPP1 protein, Arabidopsis WPP2 protein, Arabidopsis nuclear envelope nuclear migration plant fertilization pollen tube ovular guidance pollen tube reception vegetative nucleus.