Linked Life Data

6442108

Source:http://linkedlifedata.com/resource/pubmed/id/6442108

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1985-3-27
pubmed:abstractText
The kinetics of calcium ion complexation by ethylene glycol bis(beta-aminoethyl ether)-N,N'-tetraacetic acid (EGTA) were investigated using the stopped-flow technique. This study was performed within the pH range 5.8 to 8.4. The reaction was found to be first order in EGTA and complex order in calcium, with an observed second-order rate constant (pH 7, T = 25 degrees C, ionic strength = 0.1 M) of about 1.5 X 10(6) M-1 s-1. The rate constant was independent of hydrogen ion concentration between pH 5.8 and 7.3; above pH 7.3 it increased in magnitude with increasing pH, and was 2.0 X 10(8) M-1 s-1 at pH 8.4. The rate constant at 16 and 38 degrees C (pH 6.8) was found to be 0.9 and 7 X 10(6) M-1 s-1, respectively. These data imply that calcium ion buffering by EGTA will require times on the order of milliseconds when EGTA is present in millimolar concentrations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0003-2697
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
143
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
188-95
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
A stopped-flow investigation of calcium ion binding by ethylene glycol bis(beta-aminoethyl ether)-N,N'-tetraacetic acid.
pubmed:publicationType
Journal Article