Download MendeleyThe structure of augmenter of liver regeneration crystallized in the presence of 50 mM CdCl2 reveals a novel Cd2Cl4O6 cluster that aids in crystal packing.
Florence, Q., Wu, C.K., Habel, J., Swindell 2nd, J.T., Wang, B.C., Rose, J.P.(2012) Acta Crystallogr D Biol Crystallogr 68: 1128-1133
- PubMed: 22948913
- DOI: https://doi.org/10.1107/S0907444912022561
- Primary Citation of Related Structures:
3R7C - PubMed Abstract:
The crystal structure of the protein augmenter of liver regeneration containing a 14-residue hexahistidine purification tag (hsALR) has been determined to 2.4 Å resolution by Cd-SAD using a highly redundant data set collected on a rotating-anode home X-ray source and processed in 1998. The hsALR crystal structure is a tetramer composed of two homodimers bridged by a novel Cd(2)Cl(4)O(6) cluster via binding to the side-chain carboxylate groups of two solvent-exposed aspartic acid residues. A comparison with the native sALR tetramer shows that the cluster dramatically changes the hsALR dimer-dimer interface, which can now better accommodate the extra 14 N-terminal residues associated with the purification tag. The refined 2.4 Å resolution structure is in good agreement with both the X-ray data (R(cryst) of 0.165, R(free) of 0.211) and the expected stereochemistry (r.m.s. deviations from ideality for bond lengths and bond angles of 0.007 Å and 1.15°, respectively).
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, USA.
Organizational Affiliation:
