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Journal of Bacteriology, May 2002, p. 2833-2836, Vol. 184, No. 10
0021-9193/02/$04.00+0 DOI: 10.1128/JB.184.10.2833-2836.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
Bacteriophage SP6 Is Closely Related to Phages K1-5, K5, and K1E but Encodes a Tail Protein Very Similar to That of the Distantly Related P22
Dean Scholl,1 Sankar Adhya,2 and Carl R. Merril1*
Laboratory of Biochemical Genetics, National Institute of Mental Health,1
Section of Developmental Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 208922
Received 17 October 2001/
Accepted 22 February 2002
The lytic salmonella phage SP6 encodes a tail protein with a high degree of sequence similarity to the tail protein of the biologically unrelated lysogenic salmonella phage P22. The SP6 tail gene is flanked by an upstream region that contains a promoter and a downstream region that contains a putative Rho-independent transcription terminator, giving it a cassette or modular structure almost identical to the structure of the tail genes of coliphages K1E, K5, and K1-5. It now appears that SP6, K1-5, K5, and K1E are very closely related but have different tail fiber proteins, giving them different host specificities.
* Corresponding author. Mailing address: Laboratory of Biochemical Genetics, National Institute of Mental Health, National Institutes of Health, Building 10, Room 2D54, 9000 Rockville Pike, Bethesda, MD 20892. Phone: (301) 435-3583. Fax: (301) 435-9862. E-mail: merrilc{at}helix.nih.gov.
Journal of Bacteriology, May 2002, p. 2833-2836, Vol. 184, No. 10
0021-9193/02/$04.00+0 DOI: 10.1128/JB.184.10.2833-2836.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
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Copyright © 2002 by the American Society for Microbiology. All rights reserved.