Table 1. Overview of the crystal structures with sequence GTGTACAC available in the Nucleic Acid Database (NDB; Berman et al., 1992 ▶) with their corresponding space groups.

NDB code	Nucleic acid type	Space group
ADH034†, ADH038‡, ADH039‡	DNA	P6122
ADH014§	DNA	P43212
HD0001¶	HNA	P3212
HD0002¶	HNA	P6222
UD0068††	CeNA	R32

^†Jain et al. (1991 ▶).

^‡Thota et al. (1993 ▶).

^§Jain et al. (1989 ▶).

^¶Declercq et al. (2002 ▶).

^††Robeyns et al. (2008 ▶).