Characterization of immunoaffinity purified peptidoglycan-associated lipoprotein (cas 107761-78-4) of Actinobacillus actinomycetemcomitans

Add time:08/17/2019    Source:sciencedirect.com

peptidoglycan-associated lipoprotein (cas 107761-78-4) (PAL) is a highly conserved structural outer membrane protein among Gram-negative bacteria. In some species, it is proinflammatory and released extracellularly. We purified a newly identified PAL (AaPAL) of a periodontal pathogen Actinobacillus actinomycetemcomitans by using AaPAL antipeptide antibodies coupled to immunoaffinity chromatography column. No protein impurities originating in A. actinomycetemcomitans were found in the final product. Sera from patients infected by A. actinomycetemcomitans recognized the purified AaPAL. The present purification method seems to be suitable for isolation of AaPAL and probably PALs of other bacterial species, and applicable in studies investigating proinflammatory mechanisms of A. actinomycetemcomitans.

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