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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Biomaterials. 2018 Feb 6;163:67–75. doi: 10.1016/j.biomaterials.2018.01.035

Fig. 1.

Fig. 1

Chemical structures of (A) ML RR-S2 CDA synthetic STING agonist (CDN), (B) K2(SL)6K2 multidomain peptide (MDP), showing charge-pair complementarity of positive lysine termini and negative thiophosphate linkages. (C) Model of anti-parallel β-sheet nanofiber formed by the MDP in solution. The red arrow indicates the axis of the nanofiber and orientation of hydrogen bonding. (D) Scanning Electron Microscopy image of the MDP gel showing a wide field image of the self-assembled nanofibers.