Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2005-11-11
pubmed:abstractText
Total RNA was extracted from placenta umbilical tissue and the canstatin cDNA was amplified from total RNA by net-RT-PCR technique. The amplified cDNA was cloned into pSP72 and sequenced. The canstatin cDNA was cut down from pSP72C with BamH I / Nde I and ligated into the vector pET-3c. The resultant plasmid pETC was then transformed into E. coli BL21 (DE3). The canstatin gene was efficiently expressed after IPTG induction as a 25 kD band on SDS-PAGE. The expressed product constituted approximately 27.9% of the total bacterial proteins estimated by densitometry and existed mainly as inclusion body. The inclusion bodies were washed, lysed, refolded and purified on the Sephadex G-75 gel filtration column to a purity of 91.4%. CAM assay showed that 10 microg purified canstatin is enough to inhibit the angiogenesis of chichen embryo microcapillary vessel.
pubmed:language
chi
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0001-6209
pubmed:author
pubmed:issnType
Print
pubmed:volume
43
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
607-12
pubmed:dateRevised
2010-5-20
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
[Cloning and expression of human canstatin and its purification and bioactivity].
pubmed:affiliation
Key Laboratory of Genetic Engineering of Ministry of Education, Zhongshan University, Guangzhou 510275, China. heguoan@263.net
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't