Cloning and sequencing of the gene encoding a novel lysine-specific cysteine proteinase (Lys-gingipain) in Porphyromonas gingivalis: structural relationship with the arginine-specific cysteine proteinase (Arg-gingipain).

Abstract excerpt

Lys-gingipain (KGP), so termed due to its peptide cleavage specificity for lysine residues, is a cysteine proteinase produced by the Gram-negative anaerobic bacterium Porphyromonas gingivalis. Mixed oligonucleotide primers designed from the NH2-terminal sequence of the purified enzyme were used to clone the KGP-encoding gene (kgp) from the organism. The nucleotide sequence of kgp had a 5,169-bp open reading frame...

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