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. 2015 Feb 12;6:67. doi: 10.3389/fpls.2015.00067

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Copyright © 2015 Williams, Gillaspy and Perera.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Schematic alignment of the kinase and phosphatase domains of VIPs. The ATP grasp/RimK/ kinase (ATP-grasp) and the histidine acid Phosphatase (Phosphatase) domains within the VIP proteins from Homo sapiens (Hs, Genbank AAH57395), Saccharomyces cerevisiae (Sc, NP_013514) and Arabidopsis thaliana (AtVip1 Gene ID, 821297; AtVip2 Gene ID, 831359). The red asterisks denotes in both panels the conserved aspartic acid residue (D) required for kinase activity, and the black dot, the known phosphorylated serine residues within the Arabidopsis VIPs. The lower panel contains the amino acid alignment of the boundary region between the ATP-Grasp and Phosphatase domains. The beginning of the Histidine Acid phosphatase domain is boxed, followed by the PH domain and Arg417 is marked by the blue arrow.