| sequence analysis and expression in escherichia coli of the hyaluronidase gene of streptococcus pyogenes bacteriophage h4489a. | the hyaluronidase gene (hylp) from streptococcus pyogenes bacteriophage h4489a was previously cloned into escherichia coli plasmid puc8 as a 3.1-kilobase thai fragment. southern hybridization experiments confirmed the origin of this fragment in bacteriophage h4489a before determination of the nucleotide sequence of the entire fragment. two open reading frames (orfs) were found, the first of which specified a 39,515-molecular-weight protein identified as the bacteriophage hyaluronidase. the secon ... | 1989 | 2643574 |