Linked Life Data

6248503

Source:http://linkedlifedata.com/resource/pubmed/id/6248503

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1980-9-23
pubmed:abstractText
The acid deoxyribonucleases [DNase II; EC 3.1.4.6] in human urine were purified approximately 400- to 500-fold by phosphocellulose chromatography, gel filtration on Sephadex G-75 and isoelectric focusing, with a total recovery of 22%. The enzymes were present in a least three forms with different isoelectric points, pHs 6.4, 6.6, and 6.8. However, other properties were essentially similar. The enzymes did not require divalent cations for activity, and the optimal pHs were at 5.1 to 5.3 in 33 mM acetate buffer. They had a molecular weight of around 36,000, as estimated by gel filtration on Sephadex G-75. The enzymes were endonucleases which hydrolyzed native, double-stranded DNA about 5 to 15 times faster than thermally denatured DNA. The products formed from native DNA were 3'-phosphoryl- and 5'-hydroxy-terminated oligonucleotides. The average chain length of the limit digests with these enzymes was approximately 11 to 15, and the major fragments were longer than pentanucleotides. The final preparations were free of nonspecific acid and alkaline phosphatases and phosphodiesterase, but contained contaminating ribonuclease activity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0021-924X
pubmed:author
pubmed:issnType
Print
pubmed:volume
87
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1097-103
pubmed:dateRevised
2007-12-19
pubmed:meshHeading
pubmed:year
1980
pubmed:articleTitle
Purification and properties of deoxyribonuclease II from human urine.
pubmed:publicationType
Journal Article