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Submitted on: 13 May 2006.
Revised on: 04 September 2006.
Accepted on: 28 October 2006.
___________________Acta Crystallographica Section D-Structural Biology
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Submitted on: 26 September 2013.
Revised on: 22 January 2014.
Accepted on: 23 February 2014.
___________________Acta Crystallographica Section D-Structural Biology
Submitted on: 07 November 2018.
Revised on: 23 February 2019.
Accepted on: 16 March 2019.
___________________Acta Crystallographica Section D-Structural Biology
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