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Infection and Immunity, November 2004, p. 6237-6244, Vol. 72, No. 11
0019-9567/04/$08.00+0     DOI: 10.1128/IAI.72.11.6237-6244.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

SdrX, a Serine-Aspartate Repeat Protein Expressed by Staphylococcus capitis with Collagen VI Binding Activity

Yule Liu,* Brenda Ames, Elena Gorovits, Bradley D. Prater, Peter Syribeys, John H. Vernachio, and Joseph M. Patti

Inhibitex, Inc., Alpharetta, Georgia

Received 11 May 2004/ Returned for modification 14 June 2004/ Accepted 3 August 2004

Staphylococcus capitis (S. capitis) has been implicated in a large proportion of coagulase-negative staphylococcal infections in very-low-birth-weight infants. To identify potential therapeutic targets, the S. capitis genome was probed for the presence of genes encoding microbial surface components recognizing adhesive matrix molecules (MSCRAMM). By using Southern blot analysis, an S. capitis gene, designated sdrX, that contained sequence motifs consistent with the Sdr family of MSCRAMM proteins was identified. By using monospecific antisera in Western blot and flow cytometry, SdrX was demonstrated to be expressed on the surface of S. capitis. Human collagen type VI was found to bind both the recombinant A domain of SdrX and viable S. capitis expressing SdrX. SdrX is the first collagen-binding Sdr protein described and is the first MSCRAMM protein identified in S. capitis.

* Corresponding author. Mailing address: Inhibitex Inc., 8995 Westside Pkwy., Alpharetta, GA 30004. Phone: (678) 336-2654. Fax: (678) 746-1232. E-mail: yliu{at}inhibitex.com.

Editor: J. T. Barbieri

Infection and Immunity, November 2004, p. 6237-6244, Vol. 72, No. 11
0019-9567/04/$08.00+0     DOI: 10.1128/IAI.72.11.6237-6244.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Sakinc, T., Kleine, B., Gatermann, S. G. (2006). SdrI, a Serine-Aspartate Repeat Protein Identified in Staphylococcus saprophyticus Strain 7108, Is a Collagen-Binding Protein.. Infect. Immun. 74: 4615-4623 [Abstract] [Full Text]  


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