background: lipopolysaccharides (lpss) and several antigenic proteins of brucella have been considered for preparation of diagnostic reagents and subunit vaccines. the objective of this study was to identify and compare immunogens of b. abortus s19 which induce humoral immune responses in human, goat and rabbit.   material and methods: the bacterial whole cell extract was prepared in extraction...

OBJECTIVES 2D gel electrophoresis (2-DE) is the method of choice for analyzing protein expression in the field of proteomics, for example, comparing a reference with a test population. However, due to complex physical and chemical processes the locations of proteins generally vary in different 2-DE images. To cope with these variations, accurate geometric alignment of 2-DE images is important. ...

conclusions our successful extraction of purified lps from e. coli isolates of uti patients’ urine samples can be an important step to understand the uti disease conditions. results the silver-stained gel demonstrated both smooth and rough type lps by showing trail-like band patterns with the presence and lacking o-antigen region, respectively. coomassie blue staining showed no band assuring th...

In order to overcome the limitations of carrier ampholyte generated pH gradients, IPGs were developed in the late 1970s. However, the 2-DE pattern we included in the first publication on IEF with IPGs [Bjellqvist et al., J. Biochem. Biophys. Methods 1982, 6, 317-339] was far from being competitive to O'Farrell's high-resolution 2-DE with carrier ampholytes. Our 2-DE pattern in this article was,...

The binding of bovine testicular hyaluronidase to AH-Sepharose (1,6-diaminohexane--Sepharose) gels substituted with (1) dermatan sulphate, (2) desulphated dermatan sulphate, (3) heparin and (4) de-N/O-sulphated, re-N-acetylated heparin was investigated. Hyaluronidase was found to bind to (1) and (3), but not (2) and (4). On the basis of these observations a preparative scheme for the purificati...

Recently, proteomics research has become a large growth area in the biosciences. Studies involve differential analysis of large sets of 2-D Electrophoresis (2-DE) gels. We present a robust and accurate 2-DE gel alignment algorithm which combines point matching and local image-based refinement. The algorithm uses a novel combination of Euclidian, shape context, image and feature based attributes...