Unknown

Dataset Information

0

Jizanpeptins, Cyanobacterial Protease Inhibitors from a Symploca sp. Cyanobacterium Collected in the Red Sea.


ABSTRACT: Jizanpeptins A-E (1-5) are micropeptin depsipeptides isolated from a Red Sea specimen of a Symploca sp. cyanobacterium. The planar structures of the jizanpeptins were established using NMR spectroscopy and mass spectrometry and contain 3-amino-6-hydroxy-2-piperidone (Ahp) as one of eight residues in a typical micropeptin motif, as well as a side chain terminal glyceric acid sulfate moiety. The absolute configurations of the jizanpeptins were assigned using a combination of Marfey's methodology and chiral-phase HPLC analysis of hydrolysis products compared to commercial and synthesized standards. Jizanpeptins A-E showed specific inhibition of the serine protease trypsin (IC50 = 72 nM to 1 μM) compared to chymotrypsin (IC50 = 1.4 to >10 μM) in vitro and were not overtly cytotoxic to HeLa cervical or NCI-H460 lung cancer cell lines at micromolar concentrations.

SUBMITTER: Gallegos DA 

PROVIDER: S-EPMC7847313 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC4002153 | biostudies-literature
| S-EPMC2832912 | biostudies-literature
| S-EPMC3879121 | biostudies-literature
| S-EPMC3969888 | biostudies-literature
| S-EPMC3694611 | biostudies-literature
| S-EPMC7020438 | biostudies-literature
| S-EPMC8038614 | biostudies-literature
| S-EPMC3103655 | biostudies-literature
| S-EPMC6272925 | biostudies-literature
| S-EPMC3170410 | biostudies-literature