The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

A degradation-sensitive anionic trypsinogen (PRSS2) variant protects against chronic pancreatitis.

Chronic pancreatitis is a common inflammatory disease of the pancreas. Mutations in the genes encoding cationic trypsinogen (PRSS1) and the pancreatic secretory trypsin inhibitor (SPINK1) are associated with chronic pancreatitis. Because increased proteolytic activity owing to mutated PRSS1 enhances the risk for chronic pancreatitis, mutations in the gene encoding anionic trypsinogen (PRSS2) may also predispose to disease. Here we analyzed PRSS2 in individuals with chronic pancreatitis and controls and found, to our surprise, that a variant of codon 191 (G191R) is overrepresented in control subjects: G191R was present in 220/6,459 (3.4%) controls but in only 32/2,466 (1.3%) affected individuals (odds ratio 0.37; P = 1.1 x 10(-8)). Upon activation by enterokinase or trypsin, purified recombinant G191R protein showed a complete loss of trypsin activity owing to the introduction of a new tryptic cleavage site that renders the enzyme hypersensitive to autocatalytic proteolysis. In conclusion, the G191R variant of PRSS2 mitigates intrapancreatic trypsin activity and thereby protects against chronic pancreatitis.[1]

References

  1. A degradation-sensitive anionic trypsinogen (PRSS2) variant protects against chronic pancreatitis. Witt, H., Sahin-Tóth, M., Landt, O., Chen, J.M., Kähne, T., Drenth, J.P., Kukor, Z., Szepessy, E., Halangk, W., Dahm, S., Rohde, K., Schulz, H.U., Le Maréchal, C., Akar, N., Ammann, R.W., Truninger, K., Bargetzi, M., Bhatia, E., Castellani, C., Cavestro, G.M., Cerny, M., Destro-Bisol, G., Spedini, G., Eiberg, H., Jansen, J.B., Koudova, M., Rausova, E., Macek, M., Malats, N., Real, F.X., Menzel, H.J., Moral, P., Galavotti, R., Pignatti, P.F., Rickards, O., Spicak, J., Zarnescu, N.O., Böck, W., Gress, T.M., Friess, H., Ockenga, J., Schmidt, H., Pfützer, R., Löhr, M., Simon, P., Weiss, F.U., Lerch, M.M., Teich, N., Keim, V., Berg, T., Wiedenmann, B., Luck, W., Groneberg, D.A., Becker, M., Keil, T., Kage, A., Bernardova, J., Braun, M., Güldner, C., Halangk, J., Rosendahl, J., Witt, U., Treiber, M., Nickel, R., Férec, C. Nat. Genet. (2006) [Pubmed]
 
WikiGenes - Universities