Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacterales, Family Morganellaceae, Genus Proteus, Proteus cibi
Dai et al. 2019.
Gram-negative, 0.5–0.8 x 1.0–3.0 µm, rods presenting hairlike pili and flagella.
Growth temperature is 10-45 ºC (optimum temperature is 37 ºC). Grows in the
presence of up to 15% (w/v) NaCl (optimum 1% NaCl) and pH 4-10.
Isolated from a food sample in Fujian province, China.
- Dai H, Chen A, Wang Y, Lu B, Wang Y, Chen J, Huang Y, Li Z, Fang Y, Xiao T, et al. Proteus faecis sp. nov., and Proteus cibi sp.
nov., two new species isolated from food and clinical samples in China. Int J Syst Evol Microbiol 2019; 69:852-858.
Description is based on API 20 E, API 50 CH and API 20 NE (bioMerieux) results.
Positive results for catalase, esterase, gelatin hydrolysis, H2S production, indole production, phenylalanine deaminase,
L-tryptophane, urease, valine arylamidase, acid production from D-arabinose, D-fructose, D-galactose, D-glucose, glycerol,
gluconate, maltose, melezitose, methyl alpha-D-glucopyranoside, N-acetylglucosamine, D-ribose, sucrose, trehalose, turanose, and
Negative results for citrate utilization, esculin hydrolysis, esterase lipase, lipase, ornithine decarboxylase, trypsin, acid production
from amygdalin, L-arabinose, D-adonitol, D- and L-arabitol, arbutin, D-celiobiose, dulcitol, esculin, erythritol, D- and L-fucose,
gentiobiose, glycogen, inositol, inulin, 2- and 5-ketogluconate, D-lactose, D-lyxose, D-mannose, D-mannitol, D-melibiose,
methyl-alpha-D-mannopyranoside, D-raffinose, rhamnose, salicin, D-sorbitol, L-sorbose, starch, D-tagatose, xylitol, L-xylose, and
(c) Costin Stoica