Search results
Results From The WOW.Com Content Network
Bacterial microcompartments are widespread, organelle-like structures that are made of a protein shell that surrounds and encloses various enzymes. provide a further level of organization; they are compartments within bacteria that are surrounded by polyhedral protein shells, rather than by lipid membranes. These "polyhedral organelles ...
The first structure of the membrane domains was solved for the sialic acid transporter from Haemophilus influenzae. [13] [14] Confirmed by another TRAP transporter structure, [15] the structures reveal a monomeric elevator-like transport mechanism for TRAP transporter. While the larger M-subunit forms the stator- and elevator-domain, the Q ...
Bacteria are also used for the bioremediation of industrial toxic wastes. [239] In the chemical industry, bacteria are most important in the production of enantiomerically pure chemicals for use as pharmaceuticals or agrichemicals. [240] Bacteria can also be used in place of pesticides in biological pest control.
Polyhedral bodies were discovered by transmission electron microscopy in the cyanobacterium Phormidium uncinatum in 1956. [11] These were later observed in other cyanobacteria [12] and in some chemotrophic bacteria that fix carbon dioxide—many of them are sulfur oxidizers or nitrogen fixers (for example, Halothiobacillus, Acidithiobacillus, Nitrobacter and Nitrococcus; all belonging to ...
Type IV secretion system (T4SS or TFSS) is related to bacterial conjugation system, by which different bacteria can exchange their DNAs. The participating bacteria can be of the same or different Gram-negative bacterial species. It can transport single proteins, as well as protein-protein and DNA-protein complexes.
Chains of S. pyogenes bacteria (orange) at 900× magnification Gram stain of Streptococcus pyogenes. Unlike most bacterial pathogens, S. pyogenes only infects humans. Thus, zoonotic transmission from an animal (or animal products) to a human is rare. [8] S. pyogenes typically colonizes the throat, genital mucosa, rectum, and skin. Of healthy ...
The first gas vesicle gene, GvpA was identified in Calothrix. [9] There are at least two proteins that compose a cyanobacterium's gas vesicle: GvpA, and GvpC. GvpA forms ribs and much of the mass (up to 90%) of the main structure. GvpA is strongly hydrophobic and may be one of the most hydrophobic proteins known.
The first structure of a bacterial microcompartment shell, determined by X-ray crystallography and cryo-electron microscopy [1] contains representatives of each of the shell protein types: BMC-P, BMC-H and BMC-T, in both its trimer (upper right) and dimer of trimer (lower right), forms.