Lectins pp 527-538 | Cite as

Directed Evolution of Lectins by an Improved Error-Prone PCR and Ribosome Display Method

  • Dan HuEmail author
  • Hiroaki Tateno
  • Jun Hirabayashi
Part of the Methods in Molecular Biology book series (MIMB, volume 1200)


Lectins are useful reagents for the structural characterization of glycans. However, currently available lectins have an apparent drawback in their “repertoire,” lacking some critical probes, such as those for sulfated glycans. Thus, engineering lectins with novel specificity would be of great practical value. Here, we describe a directed evolution strategy to tailor novel lectins for novel specificity or biological functions. Our strategy uses a reinforced ribosome display-based selection combined with error-prone PCR to isolate mutants with target specificity and an evanescent-field fluorescence-assisted glycoconjugate microarray to rapidly evaluate the specificity of selected mutants. A successful case of screening a lectin, which has acquired an ability to recognize 6-sulfo-galactose-terminated glycans, is described.

Key words

Glycans Directed evolution Ribosome display Error-prone PCR Lectin engineering Glycoconjugate microarray 


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Institute of Traditional Chinese Medicine and Natural ProductsJinan UniversityGuangzhouPeople’s Republic of China
  2. 2.Research Center for Stem Cell EngineeringNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan

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