Oligogalacturonate-specific porins (KdgM) are a family of
outer bacterial membrane
The bacterial outer membrane is found in gram-negative bacteria. Its composition is distinct from that of the inner cytoplasmic cell membrane - among other things, the outer leaflet of the outer membrane of many gram-negative bacteria includes ...
proteins from ''
Dickeya dadantii
''Dickeya dadantii'' is a gram-negative bacillus that belongs to the family Pectobacteriaceae. It was formerly known as ''Erwinia chrysanthemi'' but was reassigned as ''Dickeya dadantii'' in 2005. Members of this family are facultative anaerobe ...
''. The phytopathogenic Gram-negative
bacteria ''D. dadantii'' secretes
pectinase
Pectinases are a group of enzymes that breaks down pectin, a polysaccharide found in plant cell walls, through hydrolysis, transelimination and deesterification reactions. Commonly referred to as pectic enzymes, they include pectolyase, pectozym ...
s, which are able to degrade the pectic polymers of plant
cell wall
A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mech ...
s, and uses the
degradation products as a carbon source for
growth
Growth may refer to:
Biology
* Auxology, the study of all aspects of human physical growth
* Bacterial growth
* Cell growth
* Growth hormone, a peptide hormone that stimulates growth
* Human development (biology)
* Plant growth
* Secondary growth ...
. Synthesis of KdgM is strongly
induced
Induce may refer to:
* Induced consumption
* Induced innovation
* Induced character
* Induced coma
* Induced menopause
* Induced metric
* Induced path
* Induced topology
* Induce (musician), American musician
See also
* Inducement (disambiguation ...
in the presence of pectic derivatives. KdgM behaves like a voltage-dependent
porin that is slightly selective for
anions and that exhibits fast block in the presence o
trigalacturonate KdgM seems to be monomeric.
References
{{InterPro content, IPR009331
Outer membrane proteins
Protein families