A narrow amide I vibrational band observed by sum frequency generation spectroscopy reveals highly ordered structures of a biofilm protein at the air/water interface

Zhuguang Wang; M. Daniela Morales-Acosta; Shanghao Li; Wei Liu; Tapan Kanai; Yuting Liu; Ya-Na Chen; Frederick J. Walker; Charles H. Ahn; Roger M. Leblanc; Elsa C. Y. Yan

doi:10.1039/C5CC05743D

A narrow amide I vibrational band observed by sum frequency generation spectroscopy reveals highly ordered structures of a biofilm protein at the air/water interface†

Zhuguang Wang,^a M. Daniela Morales-Acosta,^b Shanghao Li,^c Wei Liu,^a Tapan Kanai,^a Yuting Liu,^a Ya-Na Chen,^a Frederick J. Walker,^b Charles H. Ahn,^b Roger M. Leblanc^c and Elsa C. Y. Yan*^a

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^a Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, USA
E-mail: elsa.yan@yale.edu

^b Department of Applied Physics, Yale University, 15 Prospect Street, New Haven, Connecticut 06520, USA

^c Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, USA

Abstract

We characterized BslA, a bacterial biofilm protein, at the air/water interface using vibrational sum frequency generation spectroscopy and observed one of the sharpest amide I bands ever reported. Combining methods of surface pressure measurements, thin film X-ray reflectivity, and atomic force microscopy, we showed extremely ordered BslA at the interface.

Chemical Communications

A narrow amide I vibrational band observed by sum frequency generation spectroscopy reveals highly ordered structures of a biofilm protein at the air/water interface†

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A narrow amide I vibrational band observed by sum frequency generation spectroscopy reveals highly ordered structures of a biofilm protein at the air/water interface

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