Nucleotide sequence of a variant protein A of Staphylococcus aureus suggests molecular heterogeneity among strains.

Abstract excerpt

Protein A is a cell wall linked protein of Staphylococcus aureus that binds mammalian IgG. Although protein A displays high size heterogeneity among strains, cloning and sequencing of its gene from two strains had not shown a large difference in size. Here we report a third protein A gene sequence that shows a size variation relative to these two, due to deletions on both one IgG binding domain and a cell wall...

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