2ccf antiparallel configuration of pli e20s

 the hit
 search SMART BRLZ
 search PROSITE PROFILES BZIP
 search GENE3D G3DSA:1.20.5.1070
 search UniProt P03069
 search PANTHER PTHR11462
 search PANTHER PTHR11462:SF35
 search SUPERFAMILY SSF57959
 search PFAM bZIP_1
 search PROSITE LEUCINE_ZIPPER