Isolation of 1-Carboxymethylnicotinic Acid from the Marine Sponge Anthosigmella cf. raromicrosclera as a Cysteine Protease Inhibitor

Isolation of 1-Carboxymethylnicotinic Acid from the Marine Sponge <i>Anthosigmella</i> cf. <i>raromicrosclera</i> as a Cysteine Protease Inhibitor Isolation of 1-Methylherbipoline Salts of Halisulfate-1 and of Suvanine as Serine Protease Inhibitors from a Marine Sponge, <i>Coscinoderma </i><i>m</i><i>athewsi</i> An Antimicrobial C₁₄ Acetylenic Acid from a Marine Sponge <i>Oceanapia</i> Species Strongylophorines, meroditerpenoids from the marine sponge Petrosia corticata, function as proteasome inhibitors Cyclotheonamides E2 and E3, New Potent Serine Protease Inhibitors from the Marine Sponge of the Genus <i>Theonella</i> Cyclotheonamides E2 and E3, New Potent Serine Protease Inhibitors from the Marine Sponge of the Genus <i>Theonella</i> Aplysamine 6, an Alkaloidal Inhibitor of Isoprenylcysteine Carboxyl Methyltransferase from the Sponge <i>Pseudoceratina</i> sp. Cyclonellin, a New Cyclic Octapeptide from the Marine Sponge <i>Axinella</i> <i>carteri</i> Aplysamine 6, an Alkaloidal Inhibitor of Isoprenylcysteine Carboxyl Methyltransferase from the Sponge Pseudoceratina sp. Spermatinamine, the first natural product inhibitor of isoprenylcysteine carboxyl methyltransferase, a new cancer target