Aponte, Raphael A. Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;
http://www.sciencedirect.com/science/article/pii/S1046592801914378/pdf?md5=436b592a109bd96abd8af8de12c562ee&pid=1-s2.0-S1046592801914378-main.pdf (Any fulltext)
http://dx.doi.org/10.1006/prep.2001.1437 (Any fulltext)
Expression, purification, and characterization of recombinant purine nucleoside phosphorylase from Escherichia coli.