Linked Life Data

8218287

Source:http://linkedlifedata.com/resource/pubmed/id/8218287

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
45
pubmed:dateCreated
1993-12-21
pubmed:abstractText
Absorption and fluorescence excitation and emission spectra of the B DNA duplex decamer d[CTGA(2AP)TTCAG]2, where emission from the 2AP (2-aminopurine) base dominates, have been measured as a function of temperature. A low-temperature excitation band in the 260-270-nm region disappears near the duplex melting temperature, Tm = 27 degrees C, but then reappears at higher temperatures. Singlet-singlet energy transfer thus occurs between the normal DNA bases and the 2AP base in the B-helical conformation and to a lesser extent in the structurally-mobile melted conformation. The measured efficiency of transfer is 4-5% at 4 degrees C, near 0 at 30 degrees C, and rises again to 1% at 48 degrees C. Nearest-neighbor-only singlet transfer is likely. Such transfer does not offer a likely explanation for UV damage distributions in DNA.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
16
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
12090-5
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Excitation energy transfer in DNA: duplex melting and transfer from normal bases to 2-aminopurine.
pubmed:affiliation
Department of Physics, University of Alabama at Birmingham 35294-1170.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.