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The kinetochore is composed of several layers, observed initially by conventional fixation and staining methods of electron microscopy, [13] [14] (reviewed by C. Rieder in 1982 [15]) and more recently by rapid freezing and substitution.
Bacterial conjugation is the transfer of genetic material between bacterial cells by direct cell-to-cell contact or by a bridge-like connection between two cells. [1] This takes place through a pilus.
Ectosymbiosis is defined as a symbiotic relationship in which one organism lives on the outside surface of a different organism. [3] For instance, barnacles on whales is an example of an ectosymbiotic relationship where the whale provides the barnacle with a home, a ride, and access to food.
[3] [d] The figure shows how the splines of the Med 14 subunit connect a large portion of the complex together while still allowing flexibility. [4] [e] Mediator complexes that lack a subunit have been found or produced. These smaller mediators can still function normally in some activity, but lack other capabilities. [3]
Microbiology (from Ancient Greek μῑκρος (mīkros) 'small' βίος (bíos) 'life' and -λογία 'study of') is the scientific study of microorganisms, those being of unicellular (single-celled), multicellular (consisting of complex cells), or acellular (lacking cells).
The F-plasmid (first named F by one of its discoverers Esther Lederberg；also called the sex factor in E. coli，the F sex factor, or the fertility factor) [1] [2] [3] allows genes to be transferred from one bacterium carrying the factor to another bacterium lacking the factor by conjugation.
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Single-strand DNA-binding protein (SSB) is a protein found in Escherichia coli (E. coli) bacteria, that binds to single-stranded regions of deoxyribonucleic acid (). [1] Single-stranded DNA is produced during all aspects of DNA metabolism: replication, recombination, and repair.
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