Compositions and methods for conferring tolerance to glyphosate in bacteria, plants, plant cells, tissues and seeds are provided. Compositions include novel EPSP synthase enzymes and nucleic acid molecules encoding such enzymes, vectors comprising those nucleic acid molecules, and host cells comprising the vectors. The novel proteins comprise at least one sequence domain selected from the domains provided herein. These sequence domains can be used to identify EPSP synthases with glyphosate resistance activity.