Linked Life Data

16632369

Source:http://linkedlifedata.com/resource/pubmed/id/16632369

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
2006-8-15
pubmed:abstractText
The high molecular mass respiratory protein of the tarantula Eurypelma californicum, a 4 x 6-mer hemocyanin, was investigated by atomic force microscopy (AFM). Various substrates and methods were evaluated for immobilization of individual hemocyanin molecules on a solid surface. Samples were imaged after physisorption on mica and self-assembled monolayers, and after chemisorption on Au(111) and N-hydroxy-succinimide (NHS) functionalized surfaces. AFM measurements were carried out preferable in solution and contact mode, but also in Tapping mode and on air-dried samples. Adsorption of the protein on mica followed by drying and carrying out the measurements in Tapping mode gave the best results. In the AFM images the four hexamers of the native 4 x 6-mer hemocyanin have been defined. The results were compared with independent available structural data and represent a validation case for this technique applied for the first time on such giant and complex molecules. As observable in images taken by transmission electron microscopy and also proposed from SAXS data, 4 x 6-mers could be found where the half-molecules are tilted against each other. This study is a step in resolving conformational heterogeneities, involved in oxygen binding of hemocyanins, at the single-molecule level by AFM.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0968-4328
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
735-41
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Immobilization and AFM of single 4 x 6-mer tarantula hemocyanin molecules.
pubmed:affiliation
Institute for Physical Chemistry, University Mainz, Germany. erker@mail.uni-mainz.de
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't