TY - JOUR
T1 - The Fur-like protein Mur of Rhizobium leguminosarum is a Mn2+ responsive transcriptional regulator.
AU - Diaz-Mireles, E.
AU - Wexler, M.
AU - Sawers, G.
AU - Bellini, D.
AU - Todd, J.D.
AU - Johnston, A.W.B.
PY - 2004
Y1 - 2004
N2 - In wild-type Rhizobium leguminosarum, the sitABCD operon specifies a Mn2+ transporter whose expression is severely reduced in cells grown in the presence of this metal. Mutations in the R. leguminosarum gene, mur (manganese uptake regulator), whose product resembles the Fur transcriptional regulator, cause high-level expression of sitABCD in the presence of Mn2+. In gel-shift mobility assays, purified R. leguminosarum Mur protein bound to at least two regions near the sitABCD promoter region, although this DNA has no conventional consensus Fur-binding sequences (fur boxes). Thus, in contrast to γ-proteobacteria, where Fur binds Fe2+, the R. leguminosarum Fur homologue, Mur, act as a Mn2-responsive transcriptional regulator.
AB - In wild-type Rhizobium leguminosarum, the sitABCD operon specifies a Mn2+ transporter whose expression is severely reduced in cells grown in the presence of this metal. Mutations in the R. leguminosarum gene, mur (manganese uptake regulator), whose product resembles the Fur transcriptional regulator, cause high-level expression of sitABCD in the presence of Mn2+. In gel-shift mobility assays, purified R. leguminosarum Mur protein bound to at least two regions near the sitABCD promoter region, although this DNA has no conventional consensus Fur-binding sequences (fur boxes). Thus, in contrast to γ-proteobacteria, where Fur binds Fe2+, the R. leguminosarum Fur homologue, Mur, act as a Mn2-responsive transcriptional regulator.
U2 - 10.1099/mic.0.26961-0
DO - 10.1099/mic.0.26961-0
M3 - Article
VL - 150
SP - 1447
EP - 1456
JO - Microbiology
JF - Microbiology
SN - 1350-0872
IS - 5
ER -