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Infection and Immunity, November 2001, p. 7187-7189, Vol. 69, No. 11
Department of Cell and Molecular Biology,
Section for Molecular Pathogenesis, Lund University, Lund, Sweden
Received 31 May 2001/Returned for modification 24 July
2001/Accepted 3 August 2001
Streptococcus pyogenes secretes a specific
immunoglobulin G (IgG)-protease, SpeB, as well as the IgG
glycan-hydrolyzing enzyme EndoS. Here we show that SpeB also degrades
IgA, IgM, IgD, and IgE. We also show that EndoS only hydrolyzes the
glycan moiety on native but not denatured IgG. Thus, SpeB has a broad
immunoglobulin-degrading activity, while EndoS is highly specific for IgG.
0019-9567/01/$04.00+0 DOI: 10.1128/IAI.69.11.7187-7189.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Effect of SpeB and EndoS from Streptococcus
pyogenes on Human Immunoglobulins
*
Corresponding author. Mailing address: Department of
Cell and Molecular Biology, BMC-B14, SE-221 84, Lund, Sweden. Phone: 46(0)46-222 98 45. Fax: 46(0)46-15 77 56. E-mail:
mattias.collin{at}medkem.lu.se.
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