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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2008-2-11
pubmed:abstractText
This unit describes the use of COS cells to efficiently produce a desired protein in a short period of time. These cells express high levels of the SV40 large tumor (T) antigen, which is necessary to initiate viral DNA replication at the SV40 origin. Each COS cell transfected with DNA encoding a cell-surface antigen (in the appropriate vector) or cytoplasmic protein will express several thousand to several hundred thousand copies of the protein 72 hr posttransfection. If the transfected DNA encodes a secreted protein, up to 10 mg of protein can be recovered from the supernatant of the transfected COS cells 1 week posttransfection. COS cell transient expression systems have also been used to screen cDNA libraries, to isolate cDNAs encoding cell-surface proteins, secreted proteins, and DNA binding proteins, and to test protein expression vectors rapidly prior to the preparation of stable cell lines.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1934-3647
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
Chapter 16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
Unit 16.12
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Transient expression of proteins using COS cells.
pubmed:affiliation
Bristol-Myers Squibb, Princeton, New Jersey, USA.
pubmed:publicationType
Journal Article