The cell-surface protein FrpC from Neisseria meningitidis has been engineered to allow covalent coupling between proteins, because it generates a reactive anhydride when exposed to calcium. The bacterium also expresses unique enzymes able to cleave IgA antibodies. See also
DNA uptake sequence DNA taken up by Neisseria
NmVac4-A/C/Y/W-135 polysaccharide vaccine
Sara Branham Matthews microbiologist
Shwartzman phenomenon
Sepsis

References
External links
"Neisseria meningitidis". NCBI Taxonomy Browser. 487. Type strain of Neisseria meningitidis at BacDive - the Bacterial Diversity Metadatabase
Additional mutants in this pigment-encoding gene affect protein stability, disrupt mRNA integrity post-translationally, and affect the activation rates of transducin and opsin optical proteins.Additionally, animal models suggest that the retinal pigment epithelium fails to phagocytose the outer rod segment discs that have been shed, leading to an accumulation of outer rod segment debris. In mice that are homozygous recessive for retinal degeneration mutation, rod photoreceptors stop developing and undergo degeneration before cellular maturation completes. A defect in cGMP-phosphodiesterase has also been documented; this leads to toxic levels of cGMP. Diagnosis
An accurate diagnosis of retinitis pigmentosa relies on the documentation of the progressive loss of photoreceptor cell function, confirmed by a combination of visual field and visual acuity tests, fundus and optical coherence imagery, and electroretinography (ERG).Visual field and acuity tests measure and compare the size of the patients field of vision and the clarity of their visual perception with the standard visual measurements associated with healthy 20/20 vision. Clinical diagnostic features indicative of retinitis pigmentosa include a substantially small and progressively decreasing visual area in the visual field test, and compromised levels of clarity measured during the visual acuity test. Additionally, optical tomography such as fundus and retinal (optical coherence) imagery provide further diagnostic tools when determining an RP diagnosis. Photographing the back of the dilated eye allows the confirmation of bone spicule accumulation in the fundus, which presents during the later stages of RP retinal degeneration.