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

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The mitogenic principle of Escherichia coli lipoprotein: B-lymphocyte mitogenicity of the synthetic analogue palmitoyl-tetrapeptide (Pam-Ser-Ser-Asn-Ala).

N-Palmitoyl-(S)-seryl-(S)-seryl-(S)-asparaginyl-(S)-alanine (Palmitoyl-tetrapeptide) is an analogue of the N-terminal part of the lipoprotein from the outer membrane of Escherichia coli. It was prepared by chemical synthesis and tested for biological activity in in vitro lymphocyte culture systems. In spleen cells of the inbred mouse strains C3H/HeJ, C3H/ He/ Bom/ nunu , and Balb/c, the compound exhibited stimulatory activity towards B-lymphocytes comparable to the effect of native lipoprotein, as measured by the incorporation of 3H-thymidine and 3H-uridine, and by a hemolytic plaque assay. The B-lymphocyte tumor cell line BCL1 was also activated by the compound. The results demonstrate, that the N-terminal tetrapeptide moiety of lipoprotein, linked to a lipophilic molecule, constitutes by itself a novel B-lymphocyte mitogen.[1]

References

  1. The mitogenic principle of Escherichia coli lipoprotein: B-lymphocyte mitogenicity of the synthetic analogue palmitoyl-tetrapeptide (Pam-Ser-Ser-Asn-Ala). Bessler, W.G., Cox, M., Wiesmüller, K.H., Jung, G. Biochem. Biophys. Res. Commun. (1984) [Pubmed]
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