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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Spleen antibacterial peptides: high levels of PR-39 and presence of two forms of NK-lysin.

Antibacterial peptides were isolated from porcine spleen by acetic acid extraction, ion exchange chromatography and reverse-phase high-performance liquid chromatography. C-terminal ladder sequence analysis of a bioactive peptide with matrix-assisted laser desorption/ionization mass spectrometry after digestion with carboxypeptidases P and Y showed that it is identical to the antibacterial proline/arginine-rich intestinal peptide PR-39. It is present at high levels in granulocytes of the spleen, and peptides with C-terminal proline amide and internal adjacent Pro residues can be analyzed with this method. In addition, two forms of NK-lysin ( NKL) were found. One, NKLi, is identical to that isolated from pig intestine, and the other, NKLbw, to a mature peptide deduced from a clone from a porcine bone marrow cDNA library.[1]


  1. Spleen antibacterial peptides: high levels of PR-39 and presence of two forms of NK-lysin. Bonetto, V., Andersson, M., Bergman, T., Sillard, R., Norberg, A., Mutt, V., Jornvall, H. Cell. Mol. Life Sci. (1999) [Pubmed]
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