Scientific Reports –Nature 2016 Aug 25;6:32209.

Small secreted proteins enable biofilm development in the cyanobacterium Synechococcus elongatus.

Parnasa R, Nagar E, Sendersky E, Reich Z, Simkovsky R, Golden S, Schwarz R

 http://www.ncbi.nlm.nih.gov/pubmed/27558743