Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=25296304
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\25296304
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biophys+J
2014 ; 107
(7
): 1523-31
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Uncovering the mechanism of trapping and cell orientation during Neisseria
gonorrhoeae twitching motility
#MMPMID25296304
Zaburdaev V
; Biais N
; Schmiedeberg M
; Eriksson J
; Jonsson AB
; Sheetz MP
; Weitz DA
Biophys J
2014[Oct]; 107
(7
): 1523-31
PMID25296304
show ga
Neisseria gonorrheae bacteria are the causative agent of the second most common
sexually transmitted infection in the world. The bacteria move on a surface by
means of twitching motility. Their movement is mediated by multiple long and
flexible filaments, called type IV pili, that extend from the cell body, attach
to the surface, and retract, thus generating a pulling force. Moving cells also
use pili to aggregate and form microcolonies. However, the mechanism by which the
pili surrounding the cell body work together to propel bacteria remains unclear.
Understanding this process will help describe the motility of N. gonorrheae
bacteria, and thus the dissemination of the disease which they cause. In this
article we track individual twitching cells and observe that their trajectories
consist of alternating moving and pausing intervals, while the cell body is
preferably oriented with its wide side toward the direction of motion. Based on
these data, we propose a model for the collective pili operation of N. gonorrheae
bacteria that explains the experimentally observed behavior. Individual pili
function independently but can lead to coordinated motion or pausing via the
force balance. The geometry of the cell defines its orientation during motion. We
show that by changing pili substrate interactions, the motility pattern can be
altered in a predictable way. Although the model proposed is tangibly simple, it
still has sufficient robustness to incorporate further advanced pili features and
various cell geometries to describe other bacteria that employ pili to move on
surfaces.