| enzymatic conversion of norsolorinic acid to averufin in aflatoxin biosynthesis. | 5'-hydroxyaverantin (havn) was isolated from a mold, emericella heterothallica ifo 30842. aspergillus parasiticus niah-26, a uv-irradiated mutant of a. parasiticus sys-4, produced neither aflatoxins nor precursors in yeast extract-sucrose (yes) medium. when the postmicrosome (cytosol) fraction of niah-26, which had been prepared from the culture in yes medium, was incubated with norsolorinic acid (na) in the presence of nadh or nadph, averantin (avn) was produced. the reverse reaction from avn t ... | 1991 | 1854196 |
| structures of novel epipolythiodioxopiperazines, emethallicins b, c, and d, potent inhibitors of histamine release, from emericella heterothallica. | novel compounds designated emethallicins b (1), c (2), and d (3), along with emethallicin a (4), were isolated from the mycelium of the heterothallic fungus, emericella heterothallica (mating type a). the structures of emethallicins b (1), c (2), and d (3) were determined on the basis of spectroscopic and chemical investigations. emethallicins b (1) and c (2) are epitetrathiodioxopiperazines, which have the same basic carbon skeleton as apoaranotin (19) and acetylaranotin (17), respectively, whe ... | 1990 | 2337952 |
| sexuality and cultural characteristics of aspergillus heterothallicus. | | 1967 | 6037906 |
| heterokaryon formation and genetic analyses of color mutants in aspergillus heterothallicus. | | 1967 | 6037907 |
| polyphasic taxonomy of aspergillus section usti. | aspergillus ustus is a very common species in foods, soil and indoor environments. based on chemical, molecular and morphological data, a. insuetus is separated from a. ustus and revived. a. insuetus differs from a. ustus in producing drimans and ophiobolin g and h and not producing ustic acid and austocystins. the molecular, physiological and morphological data also indicated that another species, a. keveiisp. nov. is closely related but distinct from a. insuetus. aspergillus section usti sensu ... | 2007 | 18490949 |
| New taxa in Aspergillus section Usti. | Based on phylogenetic analysis of sequence data, Aspergillus section Usti includes 21 species, inclucing two teleomorphic species Aspergillus heterothallicus (= Emericella heterothallica) and Fennellia monodii. Aspergillus germanicus sp. nov. was isolated from indoor air in Germany. This species has identical ITS sequences with A. insuetusCBS 119.27, but is clearly distinct from that species based on ß-tubulin and calmodulin sequence data. This species is unable to grow at 37 °C, similarly to A. ... | 2011 | 21892244 |
| structure of a novel epidithiodioxopiperazine, emethallicin a, a potent inhibitor of histamine release from emericella heterothallica. | a new epidithiodioxopiperazine derivative, emethallicin a (1), was isolated along with ergosterol from the mycelial extract of the heterothallic fungus, emericella heterothallica (mating type a). the structure of emethallicin a (1) was established on the basis of chemical and spectroscopic investigations and finally by chemical transformation to apoaranotin (11). emethallicin a (1) has the same basic skeleton as apoaranotin (11), with c6-c2 carboxylic acid (mandelic and phenylacetic acids) diest ... | 1989 | 2482137 |