Abstract:
:Brucella abortus RB51 is a rough (R) stable vaccine strain used in cattle and is believed to be devoid of O-side chain. We analyzed by use of a panel of monoclonal antibodies (MAbs) directed against seven previously defined O-polysaccharide (O-PS) epitopes the O-chain expression in strain RB51. Two MAbs specific for the C/Y (A=M) and C (M>A) epitopes showed low bindings in ELISA to strain RB51. O-chain expression was further confirmed by Western blot after SDS-PAGE of strain RB51. In particular, the MAb of C (M>A) specificity, showing preferential binding to M-dominant smooth (S) Brucella strains, revealed in strain RB51 a typical smooth-lipopolysaccharide (S-LPS) pattern which resembled that of M-dominant S-LPS. Thus, the results clearly show that strain RB51 produces low levels of M-like O-antigen.
journal_name
Vaccinejournal_title
Vaccineauthors
Cloeckaert A,Zygmunt MS,Guilloteau LAdoi
10.1016/s0264-410x(02)00035-xsubject
Has Abstractpub_date
2002-03-15 00:00:00pages
1820-2issue
13-14eissn
0264-410Xissn
1873-2518pii
S0264410X0200035Xjournal_volume
20pub_type
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