alexa Oligopeptides as mimic of acetylcholinesterase: from the rational design to the application in solid-phase extraction for pesticides.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Proteomics & Bioinformatics

Author(s): Mascini M, Sergi M, Monti D, Del Carlo M, Compagnone D

Abstract Share this page

Abstract Three different peptides (His-Glu-Pro-Ser, His-Gly-Ser-Ala and Glu-Pro-Ser-Ala) were selected and tested to be used as affinity binding receptors for organophosphate and carbamate pesticides. The peptides were rationally designed by mimicking acetylcholinesterase active site. The simulated binding energy of the three tetrapeptides versus one model of organophosphate (paraoxon) and one of carbamate (carbaryl) pesticide was calculated; a good correlation between shape designed and binding score was obtained. The binding properties of the peptide-pesticide interaction were studied following the variation of UV-visible spectra in different solvents. The binding constants in water, which were nicely correlated with computational data, ranged from 506 (+/-115) to 36(+/-2) M(-1). All the peptides had a 5-fold decrease in binding by changing solvent, going from water to less polar ethanol. The binding affinity suggested the use of these ligands as a preanalytical tool in extraction cartridges. The tetrapeptides efficiency was tested linking the peptides to two different supports. The cartridges prepared using His-Glu-Pro-Ser sequence was, as predicted, able to bind paraoxon and carbaryl with recovery values in the 72-88\% range at pH 4.5. Intercolumn, interday RSD was in the 4-7\% range. The columns were used for 80 cycles before losing retention ability. This article was published in Anal Chem and referenced in Journal of Proteomics & Bioinformatics

Relevant Expert PPTs

Relevant Speaker PPTs

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri & Aquaculture Journals

Dr. Krish

agriaquaculture@omicsonline.com

1-702-714-7001Extn: 9040

Biochemistry Journals

Datta A

biochemjournals@omicsonline.com

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

business@omicsonline.com

1-702-714-7001Extn: 9042

Chemistry Journals

Gabriel Shaw

chemistryjournals@omicsonline.com

1-702-714-7001Extn: 9040

Clinical Journals

Datta A

clinicaljournals@omicsonline.com

1-702-714-7001Extn: 9037

Engineering Journals

James Franklin

engineeringjournals@omicsonline.com

1-702-714-7001Extn: 9042

Food & Nutrition Journals

Katie Wilson

nutritionjournals@omicsonline.com

1-702-714-7001Extn: 9042

General Science

Andrea Jason

generalscience@omicsonline.com

1-702-714-7001Extn: 9043

Genetics & Molecular Biology Journals

Anna Melissa

geneticsmolbio@omicsonline.com

1-702-714-7001Extn: 9006

Immunology & Microbiology Journals

David Gorantl

immunomicrobiol@omicsonline.com

1-702-714-7001Extn: 9014

Materials Science Journals

Rachle Green

materialsci@omicsonline.com

1-702-714-7001Extn: 9039

Nursing & Health Care Journals

Stephanie Skinner

nursinghealthcare@omicsonline.com

1-702-714-7001Extn: 9039

Medical Journals

Nimmi Anna

medicaljournals@omicsonline.com

1-702-714-7001Extn: 9038

Neuroscience & Psychology Journals

Nathan T

neuropsychology@omicsonline.com

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

Ann Jose

pharmajournals@omicsonline.com

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

social_politicalsci@omicsonline.com

1-702-714-7001Extn: 9042

 
© 2008- 2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords