PMID- 23802415 OWN - NLM STAT- MEDLINE DCOM- 20130805 LR - 20190923 IS - 1550-7033 (Print) IS - 1550-7033 (Linking) VI - 9 IP - 5 DP - 2013 May TI - Analysis of nanoscale protein film consisting of lactoferrin/11-MUA bilayers for bioelectronic device. PG - 849-55 AB - We fabricated and analyzed a nanoscale biofilm of human lactoferrin making use of 11-mercapto-undecanoic acid (11-MUA) as chemical linker. The fabrication of the bimolecular/organic hetero monolayer (lactoferrin/11-MUA) on gold substrate was confirmed with Raman spectroscopy. Cyclic voltammetry (CV) was carried out to observe the electrochemical properties of the nanoscaled biofilm under various pH conditions and at different time intervals. The well-defined redox properties were observed, even in certain harsh pH conditions and after a long time, proving the stabilities of this biofilm. Atomic force microscopy (AFM) was further employed to confirm the retention time by investigating the morphology variety of the biofilm over time. All these results proved that, the proposed nanoscaled thin film composed of lactoferrin and 11-MUA is a powerful alternative for making bioelectronics devices. FAU - Chen, Qi AU - Chen Q AD - Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul 121-742, Republic of Korea. FAU - Lee, Taek AU - Lee T FAU - Kumar, Ajay Yagati AU - Kumar AY FAU - Min, Junhong AU - Min J FAU - Choi, Jeong-Woo AU - Choi JW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Biomed Nanotechnol JT - Journal of biomedical nanotechnology JID - 101230869 RN - 0 (11-mercaptoundecanoic acid) RN - 0 (Fatty Acids) RN - 0 (Lipid Bilayers) RN - 0 (Multiprotein Complexes) RN - 0 (Sulfhydryl Compounds) RN - EC 3.4.21.- (Lactoferrin) SB - IM MH - Bioengineering/methods MH - *Electrical Equipment and Supplies MH - Electrochemical Techniques MH - Fatty Acids/*chemistry MH - Humans MH - Lactoferrin/*chemistry MH - Lipid Bilayers/*analysis/chemistry MH - Microscopy, Atomic Force MH - Models, Biological MH - Multiprotein Complexes/*analysis/chemistry MH - Nanostructures/chemistry MH - Oxidation-Reduction MH - Spectrum Analysis, Raman MH - Sulfhydryl Compounds/*chemistry MH - Surface Properties EDAT- 2013/06/28 06:00 MHDA- 2013/08/06 06:00 CRDT- 2013/06/28 06:00 PHST- 2013/06/28 06:00 [entrez] PHST- 2013/06/28 06:00 [pubmed] PHST- 2013/08/06 06:00 [medline] AID - 10.1166/jbn.2013.1496 [doi] PST - ppublish SO - J Biomed Nanotechnol. 2013 May;9(5):849-55. doi: 10.1166/jbn.2013.1496.