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Liu W, Xu W, Luan HH, Li G, Liu J, Lu Z, Zhang F, Li H. L-ribose specific recognition surface constructed by pillar[5]arene-based host-guest interaction. Biosens Bioelectron 2023; 241:115678. [PMID: 37703641 DOI: 10.1016/j.bios.2023.115678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/22/2023] [Accepted: 09/06/2023] [Indexed: 09/15/2023]
Abstract
In living organisms, chiral molecules have specific chiral conformations that produce different physiological effects. Ribose is one of the components of RNA, which mainly plays a role in regulating biological activity. Inspired by the biological recognition of sugars, functional chiral surfaces for recognizing L-ribose through non-covalent interactions were constructed. In the strategy of this study, a functional chiral gold surface based on host-guest interactions was constructed through the assembly of the host molecule single-function alynyl pillar[5]arene(SAP5) and the guest molecule (S) -mandelate-violet (SMV). The association constant of SMV and SAP5 was calculated to be 2.95×104 M-1, with a binding ratio of 1:1. By impedance and contact angle detection, the constructed functional interface has good detection effect on L-ribose in the range of 1×10-7 M to1× 10-2 M. In addition, CV was disassembled from the aromatic cavity of pillar[5]arene after adding zinc powder and it can repeat five times with good recyclability, thus achieving the organic combination of interface recognition and intelligence.
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Affiliation(s)
- Wenhui Liu
- College of Chemistry, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China
| | - Weiwei Xu
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China
| | - Hang-Hang Luan
- Department of Forensic Medicine, Zhongnan Hospital of Wuhan University, No. 169 East Lake Road, Wuchang District, Wuhan, 430071, PR China
| | - Guang Li
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China
| | - Junan Liu
- College of Chemistry, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Zhiyan Lu
- Department of Forensic Medicine, Zhongnan Hospital of Wuhan University, No. 169 East Lake Road, Wuchang District, Wuhan, 430071, PR China.
| | - Fan Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Health Sciences and Engineering, Hubei University, Wuhan, 430062, PR China.
| | - Haibing Li
- National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China.
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Xu W, Cheng M, Zhang S, Wu Q, Liu Z, Dhinakaran MK, Liang F, Kovaleva EG, Li H. Recent advances in chiral discrimination on host-guest functionalized interfaces. Chem Commun (Camb) 2021; 57:7480-7492. [PMID: 34264255 DOI: 10.1039/d1cc01501j] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral discrimination has gained much focus in supramolecular chemistry, since it is one of the fundamental processes in biological systems, enantiomeric separation and biochemical sensors. Though most of the biochemical processes can routinely recognize biological enantiomers, enantioselective identification of chiral molecules in artificial systems is currently one of the challenging topics in the field of chiral discrimination. Inaccuracy, low separation efficiency and expensive instrumentation were considered typical problems in artificial systems. Recently, chiral recognition on the interfaces has been widely used in the fields of electrochemical detection and biochemical sensing. For the moment, a series of macrocyclic host functionalized interfaces have been developed for use as chiral catalysts or for enantiomeric separation. Here, we have briefly exposited the most recent advances in the fabrication of supramolecular functionalized interfaces and their application for chiral recognition.
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Affiliation(s)
- Weiwei Xu
- Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China.
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Hou F, He L, Ma X, Wang D, Ding T, Ye X, Liu D. Ultrasound enhanced the binding ability of chitinase onto chitin: From an AFM insight. ULTRASONICS SONOCHEMISTRY 2020; 67:105117. [PMID: 32283493 DOI: 10.1016/j.ultsonch.2020.105117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/17/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
In order to evaluate the effect of ultrasound to chitinase from a molecular level, atomic force microscopy (AFM) was employed to investigate the interaction force of chitinase binding onto chitin surface. In the measurement of force-distance curve, a series of pull-off events were discovered using the immobilized AFM tips with chitinase either treated by ultrasound or not, whereas no interaction peak was observed by the AFM tips without chitinase, indicating that the obtained adhesion forces were coming from the binding functions between chitinase and chitin. Through the analysis of these force curves, at the loading velocity of 0.3 μm/s, the maximum binding force of the chitinase treated by ultrasound for 20 min onto chitin was measured to be 105.33 ± 23.51 pN, while the untreated onto chitin was 71.05 ± 12.73 pN, suggesting the stronger binding force between ultrasonic treated chitinase and chitin substrate. Therefore, AFM has provided a useful method to directly and quantitatively characterize the interactions between chitinase and chitin, and successfully proved that ultrasound could activate chitinase by enhancing the binding ability of chitinase onto chitin.
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Affiliation(s)
- Furong Hou
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Liang He
- Zhejiang Academy of Forestry, Hangzhou 310023, China
| | - Xiaobin Ma
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
| | - Danli Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
| | - Tian Ding
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, China.
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, China.
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, China.
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Liese S, Gensler M, Krysiak S, Schwarzl R, Achazi A, Paulus B, Hugel T, Rabe JP, Netz RR. Hydration Effects Turn a Highly Stretched Polymer from an Entropic into an Energetic Spring. ACS NANO 2017; 11:702-712. [PMID: 27977927 DOI: 10.1021/acsnano.6b07071] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polyethylene glycol (PEG) is a structurally simple and nontoxic water-soluble polymer that is widely used in medical and pharmaceutical applications as molecular linker and spacer. In such applications, PEG's elastic response against conformational deformations is key to its function. According to text-book knowledge, a polymer reacts to the stretching of its end-to-end separation by a decrease in entropy that is due to the reduction of available conformations, which is why polymers are commonly called entropic springs. By a combination of single-molecule force spectroscopy experiments with molecular dynamics simulations in explicit water, we show that entropic hydration effects almost exactly compensate the chain conformational entropy loss at high stretching. Our simulations reveal that this entropic compensation is due to the stretching-induced release of water molecules that in the relaxed state form double hydrogen bonds with PEG. As a consequence, the stretching response of PEG is predominantly of energetic, not of entropic, origin at high forces and caused by hydration effects, while PEG backbone deformations only play a minor role. These findings demonstrate the importance of hydration for the mechanics of macromolecules and constitute a case example that sheds light on the antagonistic interplay of conformational and hydration degrees of freedom.
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Affiliation(s)
| | - Manuel Gensler
- Department of Physics and IRIS Adlershof, Humboldt-Universität zu Berlin , Berlin 12489, Germany
| | - Stefanie Krysiak
- Physik Department and IMETUM, Technische Universität München , Garching 85748, Germany
| | | | | | | | - Thorsten Hugel
- Institute of Physical Chemistry, University of Freiburg , Freiburg 79104, Germany
| | - Jürgen P Rabe
- Department of Physics and IRIS Adlershof, Humboldt-Universität zu Berlin , Berlin 12489, Germany
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Zhang B, Shi R, Duan W, Luo Z, Lu ZY, Cui S. Direct comparison between chemisorption and physisorption: a study of poly(ethylene glycol) by means of single-molecule force spectroscopy. RSC Adv 2017. [DOI: 10.1039/c7ra05779b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chemisorption on an AFM-tip is the most promising protocol, if a functionalized polymer sample is available.
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Affiliation(s)
- Bo Zhang
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Rui Shi
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- China
| | - Weili Duan
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Zhonglong Luo
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Zhong-yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- China
| | - Shuxun Cui
- Key Lab of Advanced Technologies of Materials
- Ministry of Education of China
- Southwest Jiaotong University
- Chengdu 610031
- China
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