Abstract
Marine sponges are shown to be abundant sources of bioactive peptides. Structurally they include linear peptides, peptide lactones, cyclic peptides, and depsipeptides, with number of residues ranging from two to 48. Some of them have highly modified structural features with nonproteinogenic amino acid or hydroxy acid residues, while others have those with minimal alterations from the common ribosomal peptides. The structural characteristics, biogenesis, biological activity, and the issue of producing symbiotic organisms of nonribosomal peptides reported since 1993 are described in the order of structural types.
Keywords: nonribosomal peptides, marine sponges, bioactive peptides, peptide lactones, depsipeptides, nonproteinogenic amino acid, ribosomal peptides
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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