Zy. Sha et al., BRUCELLA-ABORTUS CATALASE IS A PERIPLASMIC PROTEIN LACKING A STANDARDSIGNAL SEQUENCE, Journal of bacteriology, 176(23), 1994, pp. 7375-7377
A periplasmic catalase has been purified and cloned from Brucella abor
tus. The functional enzyme is a tetramer with a subunit molecular weig
ht of 55,000. All evidence indicates that a typical N-terminal signal
sequence is not associated with the export of this protein to the peri
plasm.