2QH1:
reference: Biochemical and structural characterization of a novel family of cystathionine beta-synthase domain proteins fused to a Zn ribbon-like domain., Proudfoot M, Sanders SA, Singer A, Zhang R, Brown G, Binkowski A, Xu L, Lukin JA, Murzin AG, Joachimiak A, Arrowsmith CH, Edwards AM, Savchenko AV, Yakunin AF, J Mol Biol. 2008 Jan 4;375(1):301-15. Epub 2007 Nov 1. PMID: 18021800

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