Secretion micrococci

The decrease of peak numbers was observed, when the spectra of the same amounts of fresh (12 weeks old) and aged (9 months old) mortars were compared. This decrease might be caused by activity of ubiquitous microorganisms that live on the mortar surfaces in biofilms. Especially in mild climate conditions, algae and cyanobacteria [35] can appear here moulds (Aspergillus, Penicillium, Fusarium, Mucor) [36] and bacteria (Arthrobacter Bacillus, Micrococcus, Staphylococcus) [37,38] have been discovered as well. The microorganisms secrete various hydrolytic enzymes that can decompose the organic additives, namely proteins, and make their sample identification less sensitive... 

Lysozyme is an enzyme that hydrolyzes some bacterial cell-walls, the bacterium used for the assay being Micrococcus lysodeikticus. Lysozyme is found in a wide variety of species and locations, including bacteriophages, blood, egg white, gastric secretions, milk, nasal mucus, papaya, sputum, and tears. The outstanding achievement in this field has been the elucidation of the crystal structures of some of the lysozyme-substrate complexes. 

Interaction of WGA with a soluble, linear peptidoglycan secreted by Micrococcus luteus, and with the teichoic acid of Staphyloccus aureus H, was demonstrated by agaT-gel diffusion, quantitative precipitation, and inhibition of trypsinized rabbit-erythrocyte hemagglutination.500 No interaction was observed with the teichoic acid from a phage-resistant mutant (S. aureus 52A2) that lacked 2-acetamido-2-deoxy-D-glucose residues. 

Mirelman, D., Bracha, R. Sharon, N. (1974b) Penicillin-induced Secretion of a Soluble, Uncrosslinked Peptidoglycan by Micrococcus luteus Cells Biochemistry, 13, 5045-53 Misaki, A. Goldstein, I.J. (1977) Glycosyl Moiety of Lima Bean Lectin , Journal of Biological Chemistry, 252, 6995-9... 

The exo-p-D-2-acetamido-3-0-(D-l-carboxyethyl)-2-deoxyglucanase exo- -N-acetylmuramidase) produced by Bacillus subtilis growing under defined conditions is partly secreted and partly bound to the cell wall. The synthesis of this enzyme was induced, in decreasing order of efficiency, by a lysozymal digest of Micrococcus lysodeikticus cell walls, 2-acetamido-4-0-(2-acetamido-2-deoxy-P-D-gIuco-pyranosyl)-3-0-(D-l-carboxyethyl)-2-deoxy-D-glucopyranose, and 2-acetamido-4-0-[2-acetamido- 3-0-(d- 1 -carboxyethyl)-2-deoxy- P-D-glucopyranosyl]-2-deox y-D-... 

Green Penicillium glaucum, used in the making French blue cheese Red Fusarium roseum, plant pathogen Red Micrococcus roseus, secretes a carotenoid pigment Red Serratia marcescens, in wet rooms, human pathogen, slimy films with pink discoloration... 

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