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Updated: Aug 16, 2026

In-vivo Detection of Protein-protein Interactions on Micro-patterned Surfaces
Published on: March 19, 2010
Immobilization of histidine-tagged recombinant proteins onto micropatterned surfaces for cell-based functional assays
Koichi Kato1, Hideki Sato, Hiroo Iwata
1Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
Abstract:
This letter describes a method for preparing protein microarrays that allow the functional analysis of proteins at a cellular level. This method involves the utilization of recombinant proteins genetically engineered to carry a fusion tag that has an affinity for metal ions. A micropatterned alkanethiol monolayer was used to prepare a microarray having multiple spots with immobilized metal ions. The fusion protein was chelated to the spots under physiological conditions. The feasibility of the method was demonstrated by culturing neural stem cells on the microarray that displayed oligohistidine-tagged epidermal growth factor.

