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1.
Figure 2

Figure 2. From: Identification of Archaea-specific chemotaxis proteins which interact with the flagellar apparatus.

Interactions of the newly identified proteins. The arrows indicate the direction bait – prey in the pull-down experiments. See Additional file 1 for details.

Matthias Schlesner, et al. BMC Microbiol. 2009;9:56-56.
2.
Figure 3

Figure 3. From: Identification of Archaea-specific chemotaxis proteins which interact with the flagellar apparatus.

Swarming ability of the deletion strains. Representative swarm plate for each deletion in S9 after three days of growth at 37°C.

Matthias Schlesner, et al. BMC Microbiol. 2009;9:56-56.
3.
Figure 7

Figure 7. From: Identification of Archaea-specific chemotaxis proteins which interact with the flagellar apparatus.

Phylogenetic analysis of DUF439 proteins. Unrooted phylogenetic tree by neighbor-joining, calculated from the multiple alignment shown in Figure 6. Species can be derived from the prefix of the protein identifier as explained in the legend of Figure 6.

Matthias Schlesner, et al. BMC Microbiol. 2009;9:56-56.
4.
Figure 1

Figure 1. From: Identification of Archaea-specific chemotaxis proteins which interact with the flagellar apparatus.

Chemotaxis and motility gene cluster of H. salinarum. Genes involved in chemotaxis are shown in blue and motility genes in green. The proteins investigated in this study are shown in light blue (the homologs OE2402F and OE2404R) and cyan. A protein of unknown function is colored gray.

Matthias Schlesner, et al. BMC Microbiol. 2009;9:56-56.
5.
Figure 4

Figure 4. From: Identification of Archaea-specific chemotaxis proteins which interact with the flagellar apparatus.

Reversals of the wild type and deletion strains as measured by computer-based cell-tracking. The percent reversal in a 4 second interval was determined either without stimulation (spontaneous, gray bar), after a blue light pulse (blue bar), or after a step down in orange light (orange bar). Error bars represent the 95% confidence interval. The dashed line indicates the estimated maximal tracking error of 5%. Two clones of each deletion strain were measured, except for R1Δ4 and R1Δ2–4.

Matthias Schlesner, et al. BMC Microbiol. 2009;9:56-56.
6.
Figure 5

Figure 5. From: Identification of Archaea-specific chemotaxis proteins which interact with the flagellar apparatus.

Organization of chemotaxis genes in archaeal genomes. Known chemotaxis genes (indicated by gene letter) and genes coding for receptors (Methyl-accepting chemotaxis proteins, MCP) are shown in blue. Genes coding for proteins of the family DUF439 are shown in light blue and genes coding for HEAT domain proteins in cyan. Gray indicates that, where no name is given, the function of the coded protein is unknown, or the protein is probably unrelated to chemotaxis (S6: 30S ribosomal protein S6e). A//sign indicates separated genome regions. The asterisk indicates that this protein is interrupted by a frame-shift mutation.

Matthias Schlesner, et al. BMC Microbiol. 2009;9:56-56.
7.
Figure 6

Figure 6. From: Identification of Archaea-specific chemotaxis proteins which interact with the flagellar apparatus.

Multiple alignment of the members of the protein family DUF439. The species are: OE Halobacterium salinarum R1, NP Natronomonas pharaonis, rrn Haloarcula marismortui, Memar Methanoculleus marisnigri, Mhun Methanospirillum hungatei, Mboo Candidatus Methanoregula boonei, MA Methanosarcina acetivorans, MM Methanosarcina mazei, Mbur Methanococcoides burtonii, AF Archaeoglobus fulgidus, PH Pyrococcus horikoshii, PAB Pyrococcus abyssi, TK Thermococcus kodakaraensis, MMP Methanococcus maripaludis S2, MmarC7 Methanococcus maripaludis C7, MmarC5 Methanococcus maripaludis C5, Mevan Methanococcus vannielii, MJ Methanococcus jannaschii, LRC uncultured methanogenic archaeon RC-I. Colors are according to the ClustalX coloring scheme. The boxes point to peculiarities of the second DUF439 protein of the haloarchaea.

Matthias Schlesner, et al. BMC Microbiol. 2009;9:56-56.

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