Fig. 2
From: Functional diversity of c-di-GMP receptors in prokaryotic and eukaryotic systems
Interaction of tetrameric c-di-GMP with the two subunits of BldD via C-terminal domain with the involvement of bipartite RXD-X8-RXXD signature. (A) Structural details of BldD dimer-(c-di-GMP) complex, (B) Top and bottom layer of BldD C-terminal domain-(c-di-GMP) contact, (C) Middle layers of two c-di-GMP dimers that are intercalated, and (D) c-di-GMP layers in side view. Reprinted with permission from reference [25]. Copyright, 2014, Elsevier Inc