Chemoenzymatic synthesis of polyprenyl phosphates.
Polyprenyl phosphates, including undecaprenyl phosphate and dolichyl phosphate, are essential intermediates in several important biochemical pathways including N-linked protein glycosylation in eukaryotes and prokaryotes and prokaryotic cell wall biosynthesis. Herein, we describe the evaluation of three potential undecaprenol kinases as agents for the chemoenzymatic synthesis of polyprenyl phosphates. Target enzymes were expressed in crude cell envelope fractions and quantified via the use of luminescent lanthanide-binding tags (LBTs). The Streptococcus mutans diacylglycerol kinase (DGK) was shown to be a very useful agent for polyprenol phosphorylation using ATP as the phosphoryl transfer agent. In addition, the S. mutans DGK can be coupled with two Campylobacter jejuni glycosyltransferases involved in N-linked glycosylation to efficiently biosynthesize the undecaprenyl pyrophosphate-linked disaccharide needed for studies of PglB, the C. jejuni oligosaccharyl transferase.
Hartley
Meredith D
MD
Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
Larkin
Angelyn
A
Imperiali
Barbara
B
D016123:Campylobacter jejuni / Q000201:enzymology / Q000235:genetics; D003001:Cloning, Molecular; D019852:Diacylglycerol Kinase / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D006031:Glycosylation; D016695:Glycosyltransferases / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D049449:Luminescence; D015394:Molecular Structure; D010766:Phosphorylation; D011106:Polyisoprenyl Phosphates / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism; D013295:Streptococcus mutans / Q000201:enzymology / Q000235:genetics; D013997:Time Factors
D011106:Polyisoprenyl Phosphates; D016695:Glycosyltransferases; D019852:Diacylglycerol Kinase