Vacuolar chitinases of tobacco: a new class of hydroxyproline-containing proteins.
The fungicidal type I chitinases contribute to the defense response of plants against pathogens. Two tobacco chitinases represent a different class of hydroxyproline-containing proteins. Hydroxyproline-rich proteins are predominantly extracellular, structural glycoproteins proteins that lack enzymatic activity and contain many hydroxyproline residues. In contrast, type I chitinases are vacuolar enzymes. They are not glycosylated and contain a small number of hydroxyproline residues restricted to a single, short peptide sequence.
Sticher
L
L
Friedrich Miescher-Institut, Basel, Switzerland.
Hofsteenge
J
J
Milani
A
A
Neuhaus
J M
JM
Meins
F
F
D000595:Amino Acid Sequence; D002688:Chitinases / Q000737:chemistry* / Q000378:metabolism; D006031:Glycosylation; D006900:Hydroxylation; D006909:Hydroxyproline / Q000032:analysis*; D008969:Molecular Sequence Data; D008970:Molecular Weight; D010947:Plants, Toxic; D011487:Protein Conformation; D014026:Nicotiana / Q000201:enzymology* / Q000648:ultrastructure; D014617:Vacuoles / Q000201:enzymology*
D002688:Chitinases; D006909:Hydroxyproline