>1a8w_A mol:na length:12 DNA QUADRUPLEX CONTAINING GGGG TETRADS AND GC WATSON-CRICK BASE PAIRS GGGCTTTTGGGC >1a8w_B mol:na length:12 DNA QUADRUPLEX CONTAINING GGGG TETRADS AND GC WATSON-CRICK BASE PAIRS GGGCTTTTGGGC