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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-5-28
pubmed:abstractText
The least understood components of the DNA damage checkpoint are the DNA damage sensors. Genetic studies of Schizosaccharomyces pombe identified six yeast genes, Rad3, Rad17, Rad9, Rad1, Hus1, and Rad26, which encode proteins thought to sense DNA damage and activate the checkpoint-signaling cascade. It has been suggested that Rad9, Rad1 and Hus1 make a heterotrimeric complex forming a PCNA-like structure. In order to carry out structural and biophysical studies of the complex and its associated proteins, the cDNAs encoding full length human Rad9, Rad1 and Hus1 were cloned together into the pET28a vector using a one-step ligation procedure. Here we report successful tri-cistronic cloning, overexpression and purification of this three-protein complex using a single hexa-histidine tag. The trimeric protein complex of Rad9, Rad1 and Hus1 was purified to near homogeneity, yielding approximately 10mg of protein from one liter of Escherichia coli culture.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1046-5928
pubmed:author
pubmed:issnType
Print
pubmed:volume
54
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
204-11
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Tri-cistronic cloning, overexpression and purification of human Rad9, Rad1, Hus1 protein complex.
pubmed:affiliation
Department of Biochemistry, Queen's University, Kingston, Ont., Canada K7L 3N6.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't