electronic reprint Journal of Synchrotron Radiation ISSN 0909-0495 Editors: G. Ice, A ˚ . Kvick and T. Ohta Can soaked-in scavengers protect metalloprotein active sites from reduction during data collection? Soﬁa Macedo, Maria Pechlaner, Walther Schmid, Martin Weik, Katsuko Sato, Christopher Dennison and Kristina Djinovi´ c-Carugo J. Synchrotron Rad. (2009). 16, 191–204 Copyright c  International Union of Crystallography Author(s) of this paper may load this reprint on their own web site or institutional repository provided that this cover page is retained. Republication of this article or its storage in electronic databases other than as speciﬁed above is not permitted without prior permission in writing from the IUCr. For further information see http://journals.iucr.org/services/authorrights.html Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehensive coverage of the entire ﬁeld of synchrotron radiation research including instrumentation, theory, computing and scientiﬁc applications in areas such as biology, nanoscience and materials science. Rapid publication ensures an up-to-date information resource for sci- entists and engineers in the ﬁeld. Crystallography Journals Online is available from journals.iucr.org J. Synchrotron Rad. (2009). 16, 191–204 Soﬁa Macedo et al. · Soaked-in scavengers