Linked Life Data

9044045

Source:http://linkedlifedata.com/resource/pubmed/id/9044045

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1997-8-4
pubmed:databankReference
pubmed:abstractText
The enzyme N-myristoyl transferase transfers the 14 carbon fatty acid myristate to an N-terminal glycine residue in a small subset of cytoplasmic proteins. Many myristoyl proteins are components of cellular signalling pathways, some of which play important roles during embryonic development, for example protein kinase A. Thus, the function of N-myristoyl transferase is probably essential for embryogenesis and it is of some interest to study the enzyme in an organism with well understood developmental biology. In this paper we report the purification of a processed form of the Drosophila enzyme from peripheral membrane fractions of embryos by affinity chromatography to a protein containing leucine rich repeats. We have also isolated the Drosophila N-myristoyl transferase gene and determined its nucleotide sequence. The predicted amino acid sequence of the Drosophila enzyme is closely related to that of mammalian and fungal N-myristoyl transferases and residues essential for enzyme function are conserved. Our findings indicate that a fraction of Drosophila NMT is bound to the membrane and they are consistent with recent results for the human enzyme. We suggest that N-myristoyl transferase may be recruited to the membrane as part of a translational complex, perhaps by binding to p34 ribosome binding protein, a leucine rich repeat receptor of the microsomal membranes. We have also studied the expression pattern of the gene in the embryo by northern blot analysis and in situ hybridization. The transcripts appear to be uniformly distributed in the pre-cellular embryo but at later stages the RNA is barely detectable with these methods. However, from about stage 14, high levels of transcript are detected in a small number of randomly distributed cells of the central and peripheral nervous system.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0021-9533
pubmed:author
pubmed:issnType
Print
pubmed:volume
110 ( Pt 2)
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
149-56
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Sequence and expression of Drosophila myristoyl-CoA: protein N-myristoyl transferase: evidence for proteolytic processing and membrane localisation.
pubmed:affiliation
Department of Biochemistry, University of Cambridge, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't