Biomaterial Database

Ultrastructure of protoplasts from mycelium and microconidia of Trichophyton mentagrophytes. 1985

E M Scott, and S P Gorman, and L R Wright

Protoplast formation from mycelium and microconidia of Trichophyton mentagrophytes was achieved with Novozym 234. Pretreatment procedures with dithiothreitol or urea mercaptoethanol sodium lauryl sulphate before digestion with Novozym 234 greatly reduced protoplast yield from mycelium. Snail gut enzyme did not protoplasts in good yield. Scanning electron microscopy of mycelium protoplasts showed the acquired spherical shape. The plasma membrane appeared finely granular although remnants of cell wall could sometimes be observed. Transmission electron microscopy showed the cell interior of these protoplasts was plasmolysed. Microconidia treated with Novozym 234 displayed a range of cell wall digestion, with intact protoplasts showing distinct cytoplasmic organelles.

UI	MeSH Term	Description	Entries
D008828	Microbiological Techniques	Techniques used in microbiology.	Microbiologic Technic,Microbiologic Technics,Microbiologic Technique,Microbiological Technics,Technic, Microbiologic,Technics, Microbiological,Technique, Microbiologic,Techniques, Microbiologic,Microbiologic Techniques,Microbiological Technic,Microbiological Technique,Technic, Microbiological,Technics, Microbiologic,Technique, Microbiological,Techniques, Microbiological
D008855	Microscopy, Electron, Scanning	Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.	Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D009097	Multienzyme Complexes	Systems of enzymes which function sequentially by catalyzing consecutive reactions linked by common metabolic intermediates. They may involve simply a transfer of water molecules or hydrogen atoms and may be associated with large supramolecular structures such as MITOCHONDRIA or RIBOSOMES.	Complexes, Multienzyme
D011523	Protoplasts	The protoplasm and plasma membrane of plant, fungal, bacterial or archaeon cells without the CELL WALL.	Protoplast
D004798	Enzymes	Biological molecules that possess catalytic activity. They may occur naturally or be synthetically created. Enzymes are usually proteins, however CATALYTIC RNA and CATALYTIC DNA molecules have also been identified.	Biocatalyst,Enzyme,Biocatalysts
D005966	Glucuronidase		Endo-beta-D-Glucuronidase,Endoglucuronidase,Exo-beta-D-Glucuronidase,beta-Glucuronidase,Endo beta D Glucuronidase,Exo beta D Glucuronidase,beta Glucuronidase
D013429	Sulfatases	A class of enzymes that catalyze the hydrolysis of sulfate ESTERS.	Sulfatase
D014249	Trichophyton	A mitosporic fungal genus and an anamorphic form of Arthroderma. Various species attack the skin, nails, and hair.	Endodermophyton,Trychophyton,Endodermophytons,Trichophytons,Trychophytons