TY - JOUR
T1 - Amino-acylation site mutations in amino acid-activating domains of surfactin synthetase
T2 - Effects on surfactin production and competence development in Bacillus subtilis
AU - D'Souza, C.
AU - Nakano, M. M.
AU - Corbell, N.
AU - Zuber, P.
PY - 1993
Y1 - 1993
N2 - The part of the srfA operon of Bacillus subtilis that contains the region required for competence development is composed of the first four amino acid- activating domains which are responsible for the incorporation of Glu, Leu, D-Leu, and Val into the peptide moiety of the lipopeptide surfactin. Ser-to- Ala substitutions were made in the amino-acylation site of each domain, and their effects on surfactin production and competence development were examined. All of the mutations conferred a surfactin-negative phenotype, supporting the finding that the conserved Ser in the amino-acylation site is required for peptide synthesis. However, none of the mutations affected significantly competence development or the expression of a lacZ fusion to the late competence operon comG. This, coupled with recent findings that only the fourth, Val-activating, domain is required for competence, suggests that some activity, other than amino-acylation and perhaps unrelated to peptide synthesis, possessed by the fourth domain is involved in the role of srfA in regulating competence development.
AB - The part of the srfA operon of Bacillus subtilis that contains the region required for competence development is composed of the first four amino acid- activating domains which are responsible for the incorporation of Glu, Leu, D-Leu, and Val into the peptide moiety of the lipopeptide surfactin. Ser-to- Ala substitutions were made in the amino-acylation site of each domain, and their effects on surfactin production and competence development were examined. All of the mutations conferred a surfactin-negative phenotype, supporting the finding that the conserved Ser in the amino-acylation site is required for peptide synthesis. However, none of the mutations affected significantly competence development or the expression of a lacZ fusion to the late competence operon comG. This, coupled with recent findings that only the fourth, Val-activating, domain is required for competence, suggests that some activity, other than amino-acylation and perhaps unrelated to peptide synthesis, possessed by the fourth domain is involved in the role of srfA in regulating competence development.
UR - http://www.scopus.com/inward/record.url?scp=0027284693&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027284693&partnerID=8YFLogxK
U2 - 10.1128/jb.175.11.3502-3510.1993
DO - 10.1128/jb.175.11.3502-3510.1993
M3 - Article
C2 - 8501054
AN - SCOPUS:0027284693
SN - 0021-9193
VL - 175
SP - 3502
EP - 3510
JO - Journal of bacteriology
JF - Journal of bacteriology
IS - 11
ER -