_ stats: contacts=4 Nring=1 specif=0.25 _ PDBs: 1:1id3_C,2:1f66_G,3:4g92_B,4:1jfi_B, _ -lnE: 1:15.9,2:15.2,3:9.6,4:8.7, _ 1 2 3 4 0012 V ----ATRA 0013 G ------AA 0016 H ------NA 0027 R* RTRA----