Peptides

Destruxin D2 is a cyclic hexadepsipeptide secondary metabolite and insecticide-phytotoxin produced by Metarhizium species fungus. Destruxin D2 can be found in the entomopathogenic fungus Metarhizium robertsii (isolate MT008).

LYRM03 is a derivative of Ubenimex (HY-B0134) and a Aminopeptidase N inhibitor. LYRM03 is isolated from Streptomyces HCCB10043. LYRM03 inhibits TLR4, MyD88, NLRP3, ASC, NF-κB and p38 MAPK, stabilizes IκB, and suppresses LPS-induced expression of iNOS and COX-2. LYRM03 reduces the levels of inflammatory cytokines and oxidative stress markers, and alleviates pulmonary edema. LYRM03 exhibits anticancer activity against breast cancer. LYRM03 has anti-inflammatory activity. LYRM03 can be used in the research of acute lung injury and breast cancer.

Pseudostellarin E is a proline-rich, caryophyllaceous cyclopeptide present in the roots of Pseudostellaria heterophylla. Pseudostellarin E can be synthesized by overexpressing its precursor gene prePhPE in the leaves of Nicotiana benthamiana.

Azumamide E is a HDAC inhibitor, with an IC₅₀ of 0.064 μM against HDAC, 1.22 μM against HDAC1, and 2.28 μM against HDAC4. Azumamide E inhibits HDAC activity in nuclear extracts of leukemia cells and cervical adenocarcinoma cells. Azumamide E suppresses angiogenesis. Azumamide E is applicable for research on leukemia, cervical adenocarcinoma, and anti-angiogenesis.