scholarly journals An amino acid switch (Gly281–>Arg) within the “hinge” region of the tryptophan synthase beta subunit creates a novel cleavage site for the OmpT protease and selectively diminishes affinity toward a specific monoclonal antibody

1993 ◽  
Vol 268 (20) ◽  
pp. 14912-14920 ◽  
Author(s):  
G.P. Zhao ◽  
R.L. Somerville
2000 ◽  
Vol 378 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Katalin Uray ◽  
Judit Kajtár ◽  
Elemér Vass ◽  
Michael R. Price ◽  
Miklós Hollósi ◽  
...  

2012 ◽  
Vol 95 (4) ◽  
pp. 1118-1124 ◽  
Author(s):  
Ulrike Immer ◽  
Sigrid Haas-Lauterbach ◽  
V Cerne ◽  
F Chirdo ◽  
J de Sadeleer ◽  
...  

Abstract The Working Group on Prolamin Analysis and Toxicity (WGPAT) organized a collaborative study to confirm whether the two R5 antibody-based ELISA test kits are able to detect gliadin in the lower mg/kg (ppm) level. Twenty laboratories investigated 12 blind-coded samples, spiked and naturally contaminated, to show the possibility of determining traces of gliadin in heat-treated or nonheat-treated foods by ELISA. It was shown that very small amounts of gliadin (below 100 ppm) could be detected by ELISA with a reproducibility RSDR (37%) and a repeatability RSDr (27%) common for ELISA under these conditions. The recovery of gliadin from the spiked samples was between 84 and 109%, based on the results of all laboratories, including those with poor performance. No false positives were found by the method (P ≤ 0.05), but one negative sample was contaminated during the bakery process. It is recommended that the method be accepted by AOAC as Official First Action.


2011 ◽  
Vol 14 (1) ◽  
pp. 141-143 ◽  
Author(s):  
K. Śmietanka ◽  
Z. Minta

Isolation of an atypical pigeon paramyxovirus type 1 in Poland In this study, a pigeon paramyxovirus type 1 (PPMV-1) isolated from a flock of ornamental pigeons in Poland in 2010 is described. The PPMV-1/Poland/H2/10 isolate showed the amino acid sequence at the cleavage site of F2/F1 112KRQKRF117 i.e. typical of virulent strains. Despite having the monoclonal antibody binding pattern typical of pigeon variants PPMV-1 (antigenic group "P"), the Polish isolate clustered into genetic sublineage 4a, which is usually associated with PMV-1 isolated from poultry.


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