Positive and Negative Regulation of IB Kinase Activity Through IKK Subunit Phosphorylation Delhase, Mireille ; Hayakawa, Makio ; Chen, Yi ; Karin, Michael Abstract Publication: Science Pub Date: April 1999 DOI: 10.1126/science.284.5412.309 Bibcode: 1999Sci...284..309D