Abstract:
:Natural products continue to demonstrate their utility both as therapeutics and as molecular probes for the discovery and mechanistic deconvolution of various cellular processes. However, this utility is dampened by the inherent difficulties involved in isolating and characterizing new bioactive natural products, in obtaining sufficient quantities of purified compound for further biological studies, and in developing bioactive probes. Key to characterizing the biological activity of natural products is the identification of the molecular target(s) within the cell. The marine sponge-derived natural product Pateamine A (PatA) has been found to be an inhibitor of eukaryotic translation initiation. Herein, we describe the methods utilized for identification of the eukaryotic translation initiation factor 4A (eIF4A) as one of the primary protein targets of PatA. We begin by describing the synthesis of an active biotin conjugate of PatA (B-PatA), made possible by total synthesis, followed by its use for affinity purification of PatA binding proteins from cellular lysates. We have attempted to present the methodology as a general technique for the identification of protein targets for small molecules including natural products.
journal_name
Methods Enzymoljournal_title
Methods in enzymologyauthors
Low WK,Dang Y,Schneider-Poetsch T,Shi Z,Choi NS,Rzasa RM,Shea HA,Li S,Park K,Ma G,Romo D,Liu JOdoi
10.1016/S0076-6879(07)31014-8subject
Has Abstractpub_date
2007-01-01 00:00:00pages
303-24eissn
0076-6879issn
1557-7988pii
S0076-6879(07)31014-8journal_volume
431pub_type
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