Conformational Analysis of Cyclo(Tyr-Cys) and Cyclo(Phe-Cys) Dipeptides

化学 立体化学 环肽 生物化学
作者
Sefa Çeli̇k,Serda Kecel‐Gunduz
出处
期刊:Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi [Süleyman Demirel University]
卷期号:21 (2): 306-306 被引量:2
标识
DOI:10.19113/sdufbed.12478
摘要

In this study, eight possible stable conformers of the Cyclo(Tyr-Cys) and Cyclo(Phe-Cys) dipeptides, which show the most significant inhibition in cervical carcinoma cells opposite to HT-29 and MCF-7 cells, performed depending on the obtained conformational analysis.The possible stable geometries were determined with the aid of φ, Ψ backbone and χ chain dihedral angles.Available all conformers and their energies were calculated and made comparison with the quantum chemical abinitio results.The Van der Waals, electrostatic , torsional , interaction energies between side and main chains of aminoacids and total energies of cysteine containing dipeptides were computed by using Fortran program. Cyclo(Tyr-Cys) ve Cyclo(Phe-Cys) Dipeptitlerinin Konformasyon AnaliziAnahtar Kelimeler Halka dipeptitler, Konformasyon analizi, DFT Özet: Bu çalışmada HT-29 ve MCF-7 hücrelerine karşı servikal kanser hücrelerinde önemli antikanser etki gösteren Cyclo(Tyr-Cys) ve Cyclo(Phe-Cys) dipeptitlerinin olası sekiz kararlı konformasyonu konformasyon analizine bağlı olarak elde edilmiştir.Olası kararlı geometriler φ, Ψ ana zincir ve χ yan zincir dihedral açılarının yardımıyla belirlenmiştir.Mevcut tüm konformerler ve onların enerjileri hesaplanmıştır ve kuantum kimyasal ab-inito sonuçlarla karşılaştırılmıştır.
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