Rolf Apweiler Amos Bairoch Cathy H. Wu Winona C. Barker Brigitte Boeckmann Serenella Ferro Elisabeth Gasteiger Hongzhan Huang Rodrigo Lopez Michele Magrane Maria Jesus Martin Darren A. Natale Claire O'Donovan Nicole Redaschi Lai-Su L. Yeh UniProt: the Universal Protein knowledgebase. 115-119 2004 32 Nucleic Acids Research Database-Issue db/journals/nar/nar32.html#ApweilerBWBBFGHLMMNORY04