Fimbriae

Fimbriae fimbriae long filamentous polymeric protein structures located at the surface of bacterial cells.

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fimbria. Send us feedback about these examples. Accessed 24 Feb. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! See Definitions and Examples ».

Fimbriae

Federal government websites often end in. The site is secure. All relevant data are within the manuscript and its Supporting Information files. Gram-negative bacteria, as well as some Gram-positive bacteria, possess hair-like appendages known as fimbriae, which play an important role in adhesion of the bacteria to surfaces or to other bacteria. Unlike the sex pili or flagellum, the fimbriae are quite numerous, with of order fimbriae appendages per bacterial cell. In this paper, a recently developed hybrid model for bacterial biofilms is used to examine the role of fimbriae tension force on the mechanics of bacterial biofilms. Each bacterial cell is represented in this model by a spherocylindrical particle, which interact with each other through collision, adhesion, lubrication force, and fimbrial force. The bacterial cells absorb water and nutrients and produce extracellular polymeric substance EPS. The flow of water and EPS, and nutrient diffusion within these substances, is computed using a continuum model that accounts for important effects such as osmotic pressure gradient, drag force on the bacterial cells, and viscous shear. The fimbrial force is modeled using an outer spherocylinder capsule around each cell, which can transmit tensile forces to neighboring cells with which the fimbriae capsule collides.

This equation was solved using the Crank-Nicholson method for the diffusive term and second-order upwind differencing for the convective fimbriae. Bergfors T.

Federal government websites often end in. Before sharing sensitive information, make sure you're on a federal government site. The site is secure. Thin, hairlike appendages, 1 to 20 microns in length and often occurring in large numbers, present on the cells of gram-negative bacteria, particularly Enterobacteriaceae and Neisseria. Unlike flagella, they do not possess motility, but being protein pilin in nature, they possess antigenic and hemagglutinating properties. Bacterial fimbriae refer to common pili, to be distinguished from the preferred use of "pili", which is confined to sex pili PILI, SEX. Help Accessibility Careers.

Fimbriae tubae project from the end of the fallopian tubes. They are lined with cilia, or hair-like structures, that guide the egg to the uterus. From there, the egg is either fertilized or shed during the menstrual cycle. The fimbriae of the uterine tube , also known as fimbriae tubae , are small, fingerlike projections connected to the end of the fallopian tubes, through which eggs move from the ovaries to the uterus. Small epithelial cells — those that line cavities throughout the body — with small, slender cilia microscopic, hair-like structures pulsate inside the fallopian tubes to guide the ovum, or egg, from the ovary to the uterus. Because the ovum cannot move by itself, the sweeping movement of the cilia of the fimbriae dictates its movement. It generally takes about 3 to 5 days for an egg to leave the ovary and land in the uterus.

Fimbriae

Most bacterial organisms have certain external appendages, especially the ones that have a cell wall structure that is gram-negative. These appendages are the delicate protein strands that extend beyond the cell wall surface. There are different forms of these external structures and these include the flagella , the fimbriae, and the sex pili. Image will be uploaded soon. The fimbriae are defined as the shorter versions of these extensions that enable the bacterial cells to adhere to different surfaces of the host and hence cause an infection in the areas. While the flagella are used for movement purposes and the sex pili help in the process of reproduction of bacterial cells, the fimbriae are responsible for providing the means of attaching the bacterial cells to the host cells. The fimbriae are also known as short attachment pili. This name is used due to the function of the fimbriae that is to attach the bacterial cells to different host surfaces. The actions of the fimbriae actually help the bacteria in sticking to things and hence causing infections.

Barry weiss wiki

Bass J. K88ab gene of Escherichia coli encodes a fimbria-like protein distinct from the K88ab fimbrial adhesin. Nunn D. Article Contents Abstract. Roth R. Published online Dec 8. Springer, Dordrecht; Lin R. Dimensionless parameter values for the runs examined in the current paper are reported in Table 3. Identification and characterization of a gene cluster mediating enteroaggregative Escherichia coli aggregative adherence fimbria 1 biogenesis. New York: W. Multi-grid methods and applications. Popular in Wordplay See All. Multifunctional nature of P-fimbriae of uropathogenic Escherichia coli : mutations in fsoE and fsoF influence fimbrial binding to renal tubuli and immobilized fibronectin.

The infundibulum of the uterine tube is the beginning of the uterine tube, just after the abdominal ostium of uterine tube, and is in relation to the free border and medial surface of the ovary.

Lindberg F. Environment temperature regulates transcription of a virulence pili operon in Escherichia coli. The Journal of Chemical Physics. Use of a wild-type gene fusion to determine the influence of environmental conditions on expression of the S fimbrial adhesin in an Escherichia coli pathogen. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Mathematical Biosciences and Engineering. Finlay B. Deboeck F. Attachment and biofilm formation by foodborne bacteria in meat processing environments: Causes, implications, role of bacterial interactions and control by alternative novel methods. Both discrete and continuum models have been developed and applied to biofilm systems, both with different advantages and disadvantages [ 30 — 38 ]. Category Commons. Methylation patterns in pap regulatory DNA control pyelonephritis-associated pili phase variation in Escherichia coli. Gyles C. Studies on the K88 fimbriae of enteropathogenic Escherichia coli.