title: Isolation of a complementary DNA encoding the bean PR4 chitinase: an acidic enzyme with an amino-terminus cysteine-rich domain.
abstract: The amino acid sequences of peptides generated by trypsin and chymotrypsin digestions of the acidic PR4 chitinase from bean were determined. Oligonucleotide primers derived from this sequence were used to synthesize a PR4 chitinase-specific probe by PCR-amplification. This probe allowed the isolation of cDNA clones encoding PR4 chitinase that have been sequenced. This acidic and extracellular chitinase shows some homology to the basic isoform from the same plant, and differs from other known acidic chitinases by the presence of an amino-terminal cysteine-rich domain. Southern blot analysis of bean genomic DNA revealed that PR4 chitinase is encoded by a single gene.
authors.affiliation: Institut de Biologie Moléculaire des Plantes, Strasbourg, France.
authors.forename: M
authors.initials: M
authors.lastname: Margis-Pinheiro
authors.forename: M H
authors.initials: MH
authors.lastname: Metz-Boutigue
authors.forename: A
authors.initials: A
authors.lastname: Awade
authors.forename: M
authors.initials: M
authors.lastname: de Tapia
authors.forename: M
authors.initials: M
authors.lastname: le Ret
authors.forename: G
authors.initials: G
authors.lastname: Burkard
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D015152:Blotting, Northern; D015139:Blotting, Southern; D002688:Chitinases / Q000737:chemistry / Q000235:genetics*; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics; D007887:Fabaceae / Q000235:genetics*; D015870:Gene Expression; D017343:Genes, Plant; D006360:Heat-Shock Proteins / Q000235:genetics; D008969:Molecular Sequence Data; D009841:Oligonucleotides / Q000737:chemistry; D010449:Peptide Mapping; D010935:Plant Diseases; D010946:Plants, Medicinal; D012333:RNA, Messenger / Q000235:genetics
chemical_list: D006360:Heat-Shock Proteins; D009841:Oligonucleotides; D012333:RNA, Messenger; D004247:DNA; D002688:Chitinases