G4LDB 2.2: a database for discovering and studying G-quadruplex and i-Motif ligands. - Yu-Huan Wang; Qian-Fan Yang; Xiao Lin; Die Chen; Zhi-Yin Wang; Bin Chen; Hua-Yi Han; Hao-Di Chen; Kai-Cong Cai; Qian Li; Shu Yang; Ya-Lin Tang; et al. (Nucleic Acids Res., 2022)