Linked Life Data

17216634

Source:http://linkedlifedata.com/resource/pubmed/id/17216634

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-4-23
pubmed:abstractText
We report here a new strategy for derivatizing peptides and proteins at the N-terminus. To achieve this, a nonnatural amino acid was charged onto a tRNA and then enzymatically transferred to a lysine (Lys) unit at the N-terminus of a peptide or a protein by using L/F-tRNA-protein transferase. By using the chemoenzymatic technique, beta-(2-quinolyl)-L-alanine, p-azido-L-phenylalanine, and p-acetyl-L-phenylalanine were introduced to the N-terminus. The latter two nonnatural amino acids possess bioorthogonal functional groups to which artificial tags can be introduced. Actually, a biotin tag was coupled to the bioorthogonal ketone group of acetylphenylalanine at the N-terminus of a peptide. N-terminal-specific biotinylation and fluorescence derivatization of the bioorthogonal azido-containing protein or peptide was also carried out based on a [3 + 2] cycloaddition. The enzymatic transfer of a nonnatural amino acid to the N-terminus of target peptides or proteins was also successfully achieved in the presence of other peptides or crude protein mixtures.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0006-3525
pubmed:author
pubmed:issnType
Print
pubmed:volume
88
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
263-71
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Leucyl/phenylalanyl(L/F)-tRNA-protein transferase-mediated aminoacyl transfer of a nonnatural amino acid to the N-terminus of peptides and proteins and subsequent functionalization by bioorthogonal reactions.
pubmed:affiliation
Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University, 3-1-1 Tsushimanaka, Okayama, Japan. taki@biotech.okayama-u.ac.jp
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't