WebCalyculin C, a minor derivative of the calyculins, has an additional methyl group on C32 of calyculin A. A recent biosynthetic study of calyculins revealed that an end product of calyculin biosynthesis is the pyrophosphate form, phosphocalyculin A. However, the pyrophosphate counterpart derived from calyculin C had not been reported. WebNov 15, 2014 · Phosphocalyculin C, although potent (IC 50 ¼ 36 nM vs. P388), is 5000 times less toxic than calyculin C itself. 22 A Chinese sediment-derived Actinoalloteichus …
Sponge symbionts play defense Nature Chemical Biology
WebThis work shows the activating mechanism to dephosphorylate the stored phosphocalyculin A protoxin, which represents a new clade and unprecedently coordinates the heteronuclear metals Cu and Zn. Marine sponges often contain potent cytotoxic compounds, which in turn evokes the principle question of how marine sponges avoid self-toxicity. In a marine … WebJun 29, 2014 · The Japanese marine sponge Discodermia calyx contains a major cytotoxic compound, calyculin A, which exhibits selective inhibition of protein phosphatases 1 and 2A. It has long been used as a chemical tool to evaluate intracellular signal transduction regulated by reversible protein phosphorylation. city cafe city of hope
Sponge symbionts play defense Nature Chemical Biology
WebNov 15, 2014 · We isolated phosphocalyculin C as a minor pyrophosphate derivative, by a detailed investigation of an extract from the sponge Discodermia calyx. The treatment of … WebReferences ; 1. Mertins P, et al. (2016) Proteogenomics connects somatic mutations to signalling in breast cancer. Nature 534, 55-62 27251275 Curated Info: 2. Sharma K, et al. (2014) Ultradeep human phosphoproteome reveals a distinct regulatory nature of Tyr and Ser/Thr-based signaling. WebAug 30, 2024 · In 2014, Wakimoto and Abe isolated phosphocalyculin C (59), a pyrophosphate derivative of the known spiroketal calyculin C. 48 The cytotoxicity investigation suggested that the cytotoxicity of phosphocalyculin C could be derived from the protoxin calyculin C. city cafe christmas menu