Artificial polypeptide scaffold for protein immobilization.

Kechun Zhang, Michael R Diehl, David A Tirrell

Index: J. Am. Chem. Soc. 127(29) , 10136-7, (2005)

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Abstract

An artificial polypeptide scaffold composed of surface anchor and protein capture domains was designed and expressed in vivo. By using a mutant E. coli phenylalanyl-tRNA synthetase, the photoreactive amino acid para-azidophenylalanine was incorporated into the surface anchor domain. Octyltrichlorosilane-treated surfaces were functionalized with this polypeptide by spin coating and photocrosslinking. The resulting protein films were shown to immobilize recombinant proteins through association of coiled coil heterodimer.