Biomaterial Database

Cross wall synthesis and the arrangement of the wall polymers in the cell wall of Staphylococcus spp. 1984

K Amako, and A Umeda

The growing process and the fine structure of the cross wall of Staphylococcus were investigated by electron microscopy. Examination of the tangentially sectioned cross wall revealed that it was initially synthesized as a thin cell wall layer by an invaginated cytoplasmic membrane. The wall thickness soon increased by additional synthesis of the wall from the cytoplasmic membrane located at the side region of the cross wall. Scanning electron microscopic observation of sodium dodecyl sulfate-treated and mechanically separated cross walls revealed that the outer surface of the cross wall exhibits regular circular structures and the inner surface showed has an irregular surface. This indicates that cell wall materials were arranged in a regular circular manner in the initially synthesized thin layer. It is conceivable that in Staphylococcus spp. two cell wall synthesizing systems are present: wall-elongation synthesis in which wall materials are arranged in a regular circular manner and wall-thickening synthesis in which wall materials are arranged in an irregular manner.

UI	MeSH Term	Description	Entries
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
D002473	Cell Wall	The outermost layer of a cell in most PLANTS; BACTERIA; FUNGI; and ALGAE. The cell wall is usually a rigid structure that lies external to the CELL MEMBRANE, and provides a protective barrier against physical or chemical agents.	Cell Walls,Wall, Cell,Walls, Cell
D013210	Staphylococcus	A genus of gram-positive, facultatively anaerobic, coccoid bacteria. Its organisms occur singly, in pairs, and in tetrads and characteristically divide in more than one plane to form irregular clusters. Natural populations of Staphylococcus are found on the skin and mucous membranes of warm-blooded animals. Some species are opportunistic pathogens of humans and animals.
D013211	Staphylococcus aureus	Potentially pathogenic bacteria found in nasal membranes, skin, hair follicles, and perineum of warm-blooded animals. They may cause a wide range of infections and intoxications.