Rhizoxin is an antimitotic agent with anti-tumor activity. It is isolated from a pathogenic plant fungus which causes rice seedling blight.
Prolyl endopeptidase (PE) also known as prolyl oligopeptidase or post-proline cleaving enzyme is an enzyme that in humans is encoded by the PREP gene.
Thienamycin is one of the most potent naturally produced antibiotics known thus far, discovered in Streptomyces cattleya in 1976. Thienamycin has excellent activity against both Gram-positive and Gram-negative bacteria and is resistant to bacterial β-lactamase enzymes. Thienamycin is a zwitterion at pH 7.
Plicamycin is an antineoplastic antibiotic produced by Streptomyces plicatus. It is an RNA synthesis inhibitor. The manufacturer discontinued production in 2000. Several different structures are currently reported in different places all with the same chromomycin core, but with different stereochemistry in the glycoside chain, a 1999 study has re-investigated the compound and proposed a revised structure.
Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 is an enzyme that in humans is encoded by the PIN1 gene.
Katanosins are a group of antibiotics. They are natural products with strong antibacterial potency. So far, katanosin A and katanosin B (lysobactin) have been described.
Polyozellus multiplex is a species complex of fungi first described in 1899. P. multiplex is commonly known as the blue chanterelle, the purple chanterelle, or, in Alaska, the black chanterelle. However, this mushroom is not closely related to true chanterelles. While this name used to refer to a group of species, it is now used to describe only one species that held onto the name P. multiplex.
Thelephoric acid is a terphenylquinone pigment that is found in several fungi, such as Omphalotus subilludens and Polyozellus multiplex. Thelephoric acid has been shown to inhibit prolyl endopeptidase, an enzyme that has a role in processing proteins in Alzheimer's disease. Chemicals that inhibit prolyl endopeptidase have attracted research interest due to their potential therapeutic effects. It is derived from atromentin, and its precursor can be from cyclovariegatin. Fragmentation patterns have suggested that polymers of thelephoric acid exists.
Polyozellin is a chemical which occurs in the mushroom Polyozellus multiplex. It inhibits prolyl endopeptidase, an enzyme that has a role in processing proteins in Alzheimer's disease. Chemicals that inhibit prolyl endopeptidase have attracted research interest due to their potential therapeutic effects. Structurally related dibenzofuranyl derivatives of polyozellin are known as kynapcins.
Romidepsin, sold under the brand name Istodax, is an anticancer agent used in cutaneous T-cell lymphoma (CTCL) and other peripheral T-cell lymphomas (PTCLs). Romidepsin is a natural product obtained from the bacterium Chromobacterium violaceum, and works by blocking enzymes known as histone deacetylases, thus inducing apoptosis. It is sometimes referred to as depsipeptide, after the class of molecules to which it belongs. Romidepsin is branded and owned by Gloucester Pharmaceuticals, a part of Celgene.
Febrifugine is a quinazolinone alkaloid first isolated from the Chinese herb Dichroa febrifuga, but also found in the garden plant Hydrangea. Laboratory synthesis of febrifugine determined that the originally reported stereochemistry was incorrect.
An Oligopeptidase is an enzyme that cleaves peptides but not proteins. This property is due to its structure: the active site of this enzyme is located at the end of a narrow cavity which can only be reached by peptides.
Dopastin is a chemical compound produced by the bacteria Pseudomonas No. BAC-125. It was first isolated and characterized in 1972. It is an inhibitor of the enzyme dopamine β-hydroxylase.
Adipostatin A is an alkylresorcinol, a type of phenolic lipids composed of long aliphatic chains and phenolic rings. Chemically, it is similar in structure to urushiol, the irritant found in poison ivy.
Hypoxia-inducible factor-proline dioxygenase (EC 1.14.11.29, HIF hydroxylase) is an enzyme with systematic name hypoxia-inducible factor-L-proline, 2-oxoglutarate:oxygen oxidoreductase (4-hydroxylating). This enzyme catalyses the following chemical reaction
Fungal isolates have been researched for decades. Because fungi often exist in thin mycelial monolayers, with no protective shell, immune system, and limited mobility, they have developed the ability to synthesize a variety of unusual compounds for survival. Researchers have discovered fungal isolates with anticancer, antimicrobial, immunomodulatory, and other bio-active properties. The first statins, β-Lactam antibiotics, as well as a few important antifungals, were discovered in fungi.
Lactimidomycin is a glutarimide antibiotic derived from the bacteria Streptomyces amphibiosporus. It has antifungal, antiviral and anti-cancer properties, acting as a direct inhibitor of protein translation in ribosomes. Antiviral activity is seen against a variety of RNA viruses including flaviviruses such as dengue fever, Kunjin virus and Modoc virus, as well as vesicular stomatitis virus and poliovirus. As lactimidomycin is a natural product containing an unusual unsaturated 12-membered lactone ring, it has been the subject of numerous total synthesis approaches.
Bicyclomycin (Bicozamycin) is a broad spectrum antibiotic active against Gram-negative bacteria and the Gram-positive bacterium, Micrococcus luteus that was isolated from Streptomyces sapporonesis and Streptomyces aizumenses in 1972. It belongs to a class of naturally occurring 2,5-diketopiperazines, that are among the most numerous of all the naturally occurring peptide antibiotics. This clinically useful antibiotic is rapidly absorbed in humans when given intramuscularly, has low toxicity and has been used to treat diarrhea in humans and bacterial diarrhea in calves and pigs.
Christopher Joseph Schofield is a Professor of Chemistry at the University of Oxford and a Fellow of the Royal Society. Chris Schofield is a professor of organic chemistry at the University of Oxford, Department of Chemistry and a Fellow of Hertford College. Schofield studied functional, structural and mechanistic understanding of enzymes that employ oxygen and 2-oxoglutarate as a co-substrate. His work has opened up new possibilities in antibiotic research, oxygen sensing, and gene regulation.
Tautomycetin is a natural product first isolated from Streptomyces griseochromogenes, a bacterium found in the soil of the Zhejiang Province, China. It was also later found in Penicillium urticae. It is a linear polyketide very similar in structure to tautomycin, both of which contain a unique dialkylmaleic anhydride moiety, which is essential for their pharmacological activity. Tautomycetin is a selective inhibitor of protein phosphatase 1.
