Citation: Ping Wei LI, Yu LUO, Gen Pei LI, Mei Cheng SHAO. Cooper and Zinc Superoxide dismutase from Peking duck erythrocytes forms a supramolecular double-helix in the crystal[J]. Chinese Chemical Letters, ;1996, 7(10): 939-941. shu

Cooper and Zinc Superoxide dismutase from Peking duck erythrocytes forms a supramolecular double-helix in the crystal

Department of Chemistry Peking University Beijing 100871

Received Date: 28 August 1996

The charge isomer fraction(PI 5.9) of the Cu.Zn SOD from duck red blood cell has been crystallized around neutral pH and low ionic strength at 297K.The crystals belong to the trigonel space group P3₂21, with unit cell a=125.lÅ;, c=163.3Å and γ=120°.The duck SOD shows a novel packing arrangement consisting of supramolecular double-helix, with 9₂2/9₇2 non-crystallographic border group symmetry in the crystal.
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