Linked Life Data

19707190

Source:http://linkedlifedata.com/resource/pubmed/id/19707190

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2009-8-26
pubmed:abstractText
The analysis of highly hydrophobic proteins is still an analytical challenge. Using a recombinant gamma-aminobutyric acid A (GABAA)-receptor subunit as a model protein, we developed a gel-based proteomic approach for high MS/MS-peptide sequence coverage identification. Protein samples were separated by multi-dimensional gel electrophoresis and the three protein spots representing the GABAA-receptor subunit alpha-1 from the last electrophoretic step were used for in-gel digestion with trypsin, chymotrypsin and subtilisin, followed by subsequent mass-spectrometric identification by nano-ESI-LC-MS/MS Qstar XL (quadrupole time-of-flight (qQTOF)) and linear ion trap (LIT) LTQ XL identification. This protocol allows the unambiguous identification of the GABAA-receptor alpha-1 subunit protein with 100% sequence coverage, thus covering all four hydrophobic transmembrane domains. This protocol differs from other methods in the selection of enzymes, digestion conditions and use of the two mass spectrometry principles. The protocol takes approximately 10 d to complete and may represent a step forward in the complex analysis of other membrane or hydrophobic proteins.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1750-2799
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1093-102
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Gel-based mass spectrometric analysis of a strongly hydrophobic GABAA-receptor subunit containing four transmembrane domains.
pubmed:affiliation
Department of Pediatrics, Medical University of Vienna, Vienna, Austria.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't