PelN Is a New Pectate Lyase of Dickeya dadantii with Unusual Characteristics
نویسندگان
چکیده
منابع مشابه
PelN is a new pectate lyase of Dickeya dadantii with unusual characteristics.
The plant-pathogenic bacterium Dickeya dadantii produces several pectinolytic enzymes that play a major role in the soft-rot disease. Eight characterized endopectate lyases are secreted in the extracellular medium by the type II secretion system, Out. They cleave internal glycosidic bonds of pectin, leading to plant tissue maceration. The D. dadantii pectate lyases belong to different families,...
متن کاملToward a quantitative modeling of the synthesis of the pectate lyases, essential virulence factors in Dickeya dadantii.
A dynamic mathematical model has been developed and validated to describe the synthesis of pectate lyases (Pels), the major virulence factors in Dickeya dadantii. This work focuses on the simultaneous modeling of the metabolic degradation of pectin by Pel enzymes and the genetic regulation of pel genes by 2-keto-3-deoxygluconate (KDG), a catabolite product of pectin that inactivates KdgR, one o...
متن کاملCommensal effect of pectate lyases secreted from Dickeya dadantii on proliferation of Escherichia coli O157:H7 EDL933 on lettuce leaves.
The outbreaks caused by enterohemorrhagic Escherichia coli O157:H7 on leafy greens have raised serious and immediate food safety concerns. It has been suggested that several phytopathogens aid in the persistence and proliferation of the human enteropathogens in the phyllosphere. In this work, we examined the influence of virulence mechanisms of Dickeya dadantii 3937, a broad-host-range phytopat...
متن کاملAn unusual pectate lyase from a Bacillus sp. with high activity on pectin: cloning and characterization.
The gene pelA encoding a pectate lyase from the strain Bacillus sp. BP-23 was cloned and expressed in Escherichia coli. The nucleotide sequence of a 1214 bp DNA fragment containing pelA gene was determined, revealing an ORF of 666 nucleotides that encoded a protein of 23233 Da. The deduced amino acid sequence of the encoded enzyme showed homology to pectate lyases A, B, C and D from Fusarium so...
متن کاملSlyA, a MarR family transcriptional regulator, is essential for virulence in Dickeya dadantii 3937.
SlyA, a MarR family transcriptional regulator, controls an assortment of biological functions in several animal-pathogenic bacteria. In order to elucidate the functions of SlyA in the phytopathogen Dickeya dadantii (formerly Erwinia chrysanthemi) 3937, a slyA gene deletion mutant (denoted DeltaslyA) was constructed. The mutant exhibited increased sensitivity to sodium hypochlorite, the cationic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2013
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.02118-12