CRYSTAL STRUCTURE OF THE OXYGENASE COMPONENT (HPAB) OF 4- HYDROXYPHENYLACETATE 3-MONOOXYGENASE 2YYG OXIDOREDUCTASE, STRUCTUROME, RIKEN SPRING-8 CENTER, OXYGNASE COMPONENT, 4- HYDROXYPHENYLACETATE 3-MONOOXYGENASE, TWO-COMPONENT FLAVIN DIFFUSIBLE MONOOXYGENASE