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Comparison of GH3 Protein Binding Sites

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In plants, GH3 proteins act as molecular on/off switches that control bioactive plant hormone formation by catalyzing the addition of specific amino acids to jasmonic acid, auxin, and benzoates. X-ray structures of GH3 proteins reveal a common three-dimensional fold but variability in the hormone binding site. This figure shows the variation in the jasmonic acid binding site of Arabidopsis thaliana GH3.11/JAR1 (gold) and the salicylic acid binding site of A. thaliana GH3.12/PBS3 (green).

Credit or Source: Argonne National Laboratory

Citation(s):

US DOE. 2013. DOE User Facilities Advanced Technologies for Biology: Synchrotron and Neutron Beam Facilities Accelerating Biological Research, US Department of Energy Office of Science. (p. 2)

Prepared by the Biological and Environmental Research Information System, Oak Ridge National Laboratory, genomicscience.energy.gov/ and genomics.energy.gov/.