Data-mining of the Meloidogyne incognita degradome and comparative analysis of proteases in nematodes.
Proteases perform essential physiological functions in all living organisms. In parasitic helminths, they are of particular importance for tissue penetration, digestion of host tissues for nutrition, and evasion of host immune responses. The recent availability of the genome sequence of the nematode Meloidogyne incognita has allowed the analysis of the protease repertoire of this major crop pathogen. The M. incognita degradome consists of at least 334 proteases that are distributed into 43 families of the five known catalytic classes. Expression profiling identified protease genes with a differential transcript level between eggs and infective juveniles. Comparing the M. incognita degradome with those of five other nematodes showed discrepancies in the distribution of some protease families, including large expansion in some families, that could reflect specific aspects of the parasitic lifestyle of this organism. This comparative study should provide a framework for deciphering the diversity of protease-mediated functions in nematodes.
Castagnone-Sereno
Philippe
P
INRA UMR1301/UNSA/CNRS UMR6243, 400 route des Chappes, BP167, 06903 Sophia Antipolis cedex, France. philippe.castagnone@sophia.inra.fr
Deleury
Emeline
E
Danchin
Etienne G J
EG
Perfus-Barbeoch
Laetitia
L
Abad
Pierre
P
D000818:Animals; D057225:Data Mining / Q000379:methods*; D004722:Endoribonucleases / Q000235:genetics*; D008018:Life Cycle Stages / Q000235:genetics; D009097:Multienzyme Complexes / Q000235:genetics*; D009348:Nematoda; D010447:Peptide Hydrolases / Q000235:genetics*; D011117:Polyribonucleotide Nucleotidyltransferase / Q000235:genetics*; D020365:RNA Helicases / Q000235:genetics*; D014431:Tylenchoidea / Q000201:enzymology*
D009097:Multienzyme Complexes; C111244:degradosome; D011117:Polyribonucleotide Nucleotidyltransferase; D004722:Endoribonucleases; D010447:Peptide Hydrolases; D020365:RNA Helicases