1DSU: Human Factor D, Complement Activating Enzyme
reference: Structure of human factor D. A complement system protein at 2.0 A resolution., Narayana SV, Carson M, el-Kabbani O, Kilpatrick JM, Moore D, Chen X, Bugg CE, Volanakis JE, DeLucas LJ, J Mol Biol 1994 Jan 14;235(2):695-708. PMID: 8289289

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