Linked Life Data

20156186

Source:http://linkedlifedata.com/resource/pubmed/id/20156186

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2010-5-5
pubmed:abstractText
The non-covalent interaction of reactive brilliant red (RBR) as a representative of sulfonic azo compounds with human serum albumin (HSA) was investigated by a combination of UV-VIS spectrometry, fluorophotometry, circular dichroism (CD) and isothermal titration calorimetry (ITC) technique. The thermodynamic characterization of the interaction was performed. The saturation binding numbers of RBR on peptide chains were determined and the effects of electrolytes and temperature were investigated. The ionic interaction induced a combination of multiple non-covalent bonds including hydrogen bonds, hydrophobic interactions and van der Waals force. A three-step binding model of RBR was revealed. The binding of RBR molecules might occur on the external surface of HSA via electric interaction when the mole ratio of RBR to HSA was less than 40 and RBR molecules entered the hydrophobic intracavity of HSA when ratio was more than 40. Moreover, RBR binding resulted in a conformational change in the structure of HSA or even the precipitation of HSA and inhibited its function accordingly. The possible binding site and the conformational transition of HSA were hypothesized and illustrated. This work provides a new insight into non-covalent interactions between sulfonic azo compounds and proteins, which may be further used to investigate the potential toxicity mechanism of azo dyes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1875-5305
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
621-9
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Binding of reactive brilliant red to human serum albumin: insights into the molecular toxicity of sulfonic azo dyes.
pubmed:affiliation
State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't