Cloning, expression and purification of Atlantic salmon (Salmo salar, L.) neuroglobin
| Autor: | Bjørn Olav Kvamme, Arnt J. Raae, Erik Slinde, Gry Aletta Bjørlykke |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Fish Proteins
Models Molecular Atlantic salmon western analysis Blotting Western Molecular Sequence Data Salmo salar Neuroglobin heme spectrum Nerve Tissue Proteins Biology medicine.disease_cause Chromatography Affinity medicine Escherichia coli Animals Humans Homology modeling Amino Acid Sequence homology model Salmo Cloning Molecular Psychrophile psycrophilic Cloning Spectrum Analysis Substrate (chemistry) biology.organism_classification Molecular biology Affinities Recombinant Proteins Globins Structural Homology Protein Sequence Alignment Biotechnology |
| Popis: | Neuroglobin (Ngb) exists only in small amounts in salmon brain. In order to study the protein in more detail salmon neuroglobin (sNgb) was cloned, hetereologously expressed in E.coli and purified. The protein had red color and showed the characteristic peaks at 411 nm (metNgb), 415 nm (carboxyNgb) and 424 nm (deoxyNgb). Western analysis showed that sNgb reacted weakly against a rabbit anti human neuroglobin (hNgb) and strongly to a sNgb specific antibody. Our 3Dhomology model of the sNgb indicated modifications adjacent to and in the O2/CO binding site. This may correlate to differences in substrate affinities for the sNgb compared to the hNgb. Also sNgb contained shorter helixes and longer interhelical loops typical for psycrophilic proteins. submittedVersion |
| Databáze: | OpenAIRE |
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