Susheel Kumar Gunasekar and Jin Montclare. Polytechnic University, Brooklyn, NY
Extensive progress has been made in the field of developing polymers based on DNA, proteins and other organic molecules as building blocks. Here we propose a novel approach of generating block co-polymers based on the self-assembly of α-helical peptides that can be induced. The coiled-coil region of cartilage oligomeric matrix protein (COMPcc) forms a homopentamer and consists of a 73 � long hydrophobic pore with a diameter of 2-6 � that is capable of binding of various hydrophobic molecules. ZE and ZR are two α-helical leucine zipper peptides that forms a heterodimer. Fusions of ZE and ZR to COMPcc results in the formation of pentameric COMPcc flanked by the zippers. We have designed block fusions of COMPcc-ZE-COMPcc and ZR-COMPcc that can be triggered to assemble upon mixing. Such bioinspired polymers possess great potential as artificial scaffolds in tissue engineering.