Material-binding peptide application-ZnO crystal structure control by means of a ZnO-binding peptide

Takanari Togashi, Nozomi Yokoo, Mitsuo Umetsu, Satoshi Ohara, Takashi Naka, Seiichi Takami, Hiroya Abe, Izumi Kumagai, Tadafumi Adschiri

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Recently, a zinc oxide (ZnO)-binding peptide (ZnOBP) has been identified and has been used to assist the synthesis of unique crystalline ZnO particles. We analyzed the influence of ZnOBP on the crystal growth of ZnO structures formed from zinc hydroxide. The addition of ZnOBP in the hydrothermal synthesis of ZnO suppressed [0001] crystal growth in the ZnO particles, indicating that the specificity of the material-binding peptide for specific inorganic crystal faces controlled the crystal growth. Furthermore, the dipeptides with a partial sequence of ZnO-binding "hot spot" in ZnOBP were used to synthesize ZnO particles, and we found that the presence of these dipeptides more strictly suppressed (0001) growth in ZnO crystals than did the complete ZnOBP sequence. These results demonstrate the applicability of dipeptides selected from material-binding peptides to control inorganic crystal growth.

Original languageEnglish
Pages (from-to)140-145
Number of pages6
JournalJournal of Bioscience and Bioengineering
Volume111
Issue number2
DOIs
Publication statusPublished - 2011 Feb

Keywords

  • Crystal growth control
  • Dipeptide
  • Inorganic material synthesis
  • Material-binding peptide]

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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