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Morphology of Sodium Salt of Calf Thymus DNA on Mica Alumina and Silica Surfaces: Effect of Solvent and Drying Method    
Yazarlar
Dr. Öğr. Üyesi Senem YETGİN
Kastamonu Üniversitesi, Türkiye
Devrim Balköse
Özet
Investigation of morphology of deoxyribonucleotide triphosphate (DNA) dried on different surfaces by atomic force microscopy (AFM) is important in DNA research that is focused on subjects of condensation for gene therapy, sizing, DNA mapping, and cancer examination. The solvent, the surface type, and the method of drying effect the morphology of DNA on solid surfaces. Ethanol and water were used as solvents, flat mica, silica, and alumina surfaces were used as the substrates in the present study. Different methods such as ambient air-drying, N2-forced flow regime drying, and freeze-drying have been applied to droplets of DNA solutions in water or ethanol on the substrates. Forced flow drying regime causes nonlinear DNA attachment on the surface and self-assembly. DNA vertical distance on mica surface was found to be 6 and 1.4 nm for DNA dried in ambient air from ethanol and water solutions, respectively. It was 1.6 nm for N2 flow drying of aqueous DNA solution on mica surface. It was 4.6, 4.6, and 1.99 nm for ambient, N2 flow, and freeze-dried aqueous DNA on alumina surfaces, respectively. Aqueous solution of DNA dried under N2 flow on silica surface had 0.8 nm vertical distance. The smallest standard deviation of 0.05 nm was observed for DNA dried under N2 flow on alumina surface.
Anahtar Kelimeler
AFM,alumina,DNA,drying,mica,silica,solvent
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Drying Technology
Dergi ISSN 0737-3937
Dergi Tarandığı Indeksler SCI
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 10-2017
Cilt No 35
Sayı 8
Sayfalar 1007 / 1019
Doi Numarası 10.1080/07373937.2016.1227833
Makale Linki https://www.tandfonline.com/doi/full/10.1080/07373937.2016.1227833