General Structure Information 2qra XIAP crystal structure of xiap bir1 domain (p21 form) 2.5Å AUTH S.C.LIN,Y.HUANG,Y.C.LO,M.LU,H.WUTITL CRYSTAL STRUCTURE OF THE BIR1 DOMAIN OF XIAP INTITL 2 TWO CRYSTAL FORMSREF J.MOL.BIOL. V. 372 847 2007REFN ISSN 0022-2836PMID 17698078DOI 10.1016/J.JMB.2007.07.019 Variant Set Distributions Mapped Variants