A soluble specific substance was isolated from Mexican typhus Rickettsia which gave, with Proteus X-19 antiserum and typhus human serum, the same precipitation reactions as the polysaccharides extracted from B. proteus OX-19. The soluble specific substance extracted from Rickettsia and Proteus OX-19 is likely to be of a polysaccharide nature owing to the strong Molisch reactions obtained with s...

O-specific polysaccharide of Proteus penneri strain 41 was studied using 1H- and 13C-NMR spectroscopy, including two-dimensional COSY, heteronuclear 13C,1H-correlation (HETCOR) and one-dimensional NOE spectroscopy, and the following structure of a non-stoichiometrically O-acetylated hexasaccharide repeating unit was established:[structure: see text] where RGlcNAc is 2-acetamido-4-O-[(S)-1-carbo...

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A method of typing isolates of Proteus mirabilis and Proteus vulgaris is described based on the sensitivity of the organisms to bacteriocine. Twelve standard proteocine producing strains were selected from a large number of isolates tested, and from these liquid proteocine preparations were prepared. The sensitivities of 1805 isolates to these 12 preparations were then determined and none was f...

Strains of Proteus penneri from seven abdominal wounds (after bowel resection), five urine samples, and eight other sites were isolated in mixed cultures. Seven urine isolates were in pure cultures. All infections were nosocomially acquired, indicating that complete identification of P. penneri in the clinical laboratory is warranted.

We are reporting two different cases of two new Proteus speciesProteus hauseri and Proteus penneri isolated from two different patients. One case reports a one month old male child with history of diarrhoea since six days. His stool sample was sent for microbiological examination and the second case is of Ante natal care patient with urinary tract infection whose urine was send for microbiologi...

The unique feature of some Proteus O-polysaccharides is occurrence of an amide of galacturonic acid with N(ε)-[(S/R)-1-Carboxyethyl]-L-lysine, GalA6(2S,8S/R-AlaLys). The results of the serological studies presented here, with reference to known O-antigens structures suggest that GalA6(2S,8S/R-AlaLys) or 2S,8R-AlaLys contribute to cross-reactions of O13 Proteus antisera, and Proteeae LPSs. It wa...

In this editorial, we briefly (1) define Proteus syndrome; (2) analyze reports of PTEN mutations claimed to have ‘‘Proteus syndrome’’ or a ‘‘Proteus-like syndrome’’; (3) demonstrate the high frequency of misdiagnosis of Proteus syndrome by clinicians less familiar with the disorder; and (4) discuss two series of patients who do meet the diagnostic criteria for Proteus syndrome among whom none h...

We have reported elsewhere the racemization of lysine by cell preparations of Proteus vulgaris strain ATCC 4669 (Huang et al., 1958). The simplest explanation of the results presented is that Proteus vulgaris contains a lysine racemase. The distribution of this activity in bacteria has now been investigated. Almost a hundred species, from eleven families, have been examined. Only nine species, ...