Crystallography of hemerythrin

North, A. C. T.; Stubbs, Gerald J.

doi:10.1016/0022-2836(74)90298-8

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Crystallography of hemerythrin

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Stubbs, Gerald J.
Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

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North, A. C. T., & Stubbs, G. J. (1974). Crystallography of hemerythrin. Journal of Molecular Biology (London), 88(1), 125-131. doi:10.1016/0022-2836(74)90298-8.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-006E-D

Abstract

X-ray crystallographic studies of hemerythrin from Golfingia gouldii show that the molecules pack in a tetragonal cell with two sets of molecules in an apparently face-centred array seen in projection along the 4-fold axis, but displaced relatively to each other by approximately in the axial direction. Both sets of molecules lie on 4-fold rotation axes, so that the subunits of each octameric molecule are related in pairs by a molecular 4-fold rotation axis. The two subunits of each pair are probably related by non-crystallographic 2-fold rotation axes perpendicular to the 4-fold axes and lying at 10 ° and 55 ° to the a and b axes. At low resolution the subunits are apparently arranged approximately in the form of a square prism. Along each 4-fold crystallographic axis there are two hemerythrin molecules, nearly equidistant and having similar but not identical orientations.