XB-ART-13706
Arch Biochem Biophys
1999 Jan 01;3611:135-41. doi: 10.1006/abbi.1998.0965.
Show Gene links
Show Anatomy links
Physicochemical and functional comparison of Xenopus laevis nucleoplasmin obtained from oocytes and from overexpression in bacteria.
???displayArticle.abstract???
We compare the physicochemical and functional characteristics of nucleoplasmin obtained from Xenopus laevis oocytes and by bacterial overexpression of a plasmid containing the nucleoplasmin gene. The comparison shows that, while the secondary structure of the protein is not affected by the method used to obtain this protein, the bacterial expressed form exhibits a marked tendency to form large aggregates and an impaired ability to displace protamines from sperm nuclei. These results add a word of caution to the indiscriminate use, in functional or structural (crystallographic) studies, of bacterially overproduced proteins that have been end-terminally tagged with polyhistidine.
???displayArticle.pubmedLink??? 9882438
???displayArticle.link??? Arch Biochem Biophys
Species referenced: Xenopus laevis
Genes referenced: npm1