Linked Life Data

19265392

Source:http://linkedlifedata.com/resource/pubmed/id/19265392

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2009-3-30
pubmed:abstractText
A fluorescent dinuclear zinc complex (1) has been prepared by an easy "one pot" method in which the lysine-based Schiff base ligand is generated in situ. The compound is characterized in detail by various spectroscopic techniques and single-crystal X-ray diffraction. Crystal data: monoclinic, C2, a = 18.31(13) A, b = 8.45(7) A, c = 11.20(8) A, beta = 90.11(6) degrees, V = 1733.6(2) A(3). Z = 2, R1 = 0.0442, wR2 = 0.1068, Flack(x) parameter = 0.03(2). Compound 1 is highly fluorescent, in both the solution phase and as a solid. Under neutral aqueous conditions (0.01 M HEPES buffer, pH 7.4), compound 1 exhibits intense blue fluorescence (lambda(ex) = 352 nm, lambda(em) = 453 nm, Phi(F) = 0.17). The complex was tested with several anions, such as F(-), Br(-), I(-), AcO(-), HCO(3)(-), H(2)PO(4)(-), HPO(4)(2-), PO(4)(3-), and a variety of biologically relevant phosphate anions, such as adenosine monophosphate (AMP), cyclic adenosine monophosphate (cAMP), inorganic pyrophosphate (PPi, P(2)O(7)(4-)), adenosine diphosphate (ADP), and adenosine triphosphate (ATP), in water at physiological pH. The dizinc species was found to act as a highly selective sensor for PPi in particular by fluorescence ON-OFF signaling. Both the fluorometric and colorimetric (indicator displacement assays) titration results suggest that compound 1 is a highly selective sensor for phosphate ions with the order PPi > or = ATP > ADP.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1520-510X
pubmed:author
pubmed:issnType
Electronic
pubmed:day
6
pubmed:volume
48
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2993-9
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Aqueous fluorometric and colorimetric sensing of phosphate ions by a fluorescent dinuclear zinc complex.
pubmed:affiliation
Molecular Logic Gate Laboratory, Department of Chemistry, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't