1.8.4.8 ? x * 22635, calculation from nucleotide sequence 1.8.4.8 ? x * 30634.4, recombinant enzyme, mass spectrometry 1.8.4.8 dimer 2 * 27000, SDS-PAGE 1.8.4.8 dimer 2 * 27927, calculation from nucleotide sequence 1.8.4.8 dimer homodimer, each monomer consisting of a six-stranded beta-sheet surrounded by alpha-helices, crystallographic date