beta 2-Microglobulin is bound to streptococcal M protein.

Abstract:

:The presence of receptors for three human proteins (fibrinogen, IgG, and beta 2-microglobulin (beta 2m)) was studied in group A streptococcal strains. M type 1, 12 and 14, and in M protein-negative variants of these strains. Fibrinogen binding was detected in all six strains. IgG did not bind to the two type-12 strains and uptake was low in both type-14 strains. The type-1, M protein-positive strain was negative in binding experiments with radiolabelled IgG, whereas the M protein-negative variant was strongly positive. Aggregated beta 2m showed a high degree of reactivity with the M protein-positive strains but not with the corresponding M protein-negative variants. The results indicate that the receptor for aggregated beta 2m is located on M protein in group A streptococci.

journal_name

Scand J Immunol

authors

Björck L,Tylewska SK,Wadström T,Kronvall G

doi

10.1111/j.1365-3083.1981.tb00149.x

subject

Has Abstract

pub_date

1981-01-01 00:00:00

pages

391-4

issue

4

eissn

0300-9475

issn

1365-3083

journal_volume

13

pub_type

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