1.3.1.56 ? x * 29400, about 1.3.1.56 homodimer 2 * 29400, functional form 1.3.1.56 additional information three-dimensional enzyme structure analysis, crystal structure analysis of PpBphB, PDB ID 3ZV5, molecular dynamics simulations, overview 1.3.1.56 tetramer - 1.3.1.56 tetramer 4 * 29400, electrospray mass spectrometry