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Ishikawa, A, Tanaka, H, Kato, C, Iwasaki, Y and Asahi, T (2005) Molecular characterization of the ZKT gene encoding a protein with PDZ, K-Box, and TPR motifs in Arabidopsis. Biosci. Biotechnol. Biochem. 69:972-8


The ZKT gene from Arabidopsis encodes a polypeptide of 335 amino acid residues, with a calculated molecular mass of 37.4 kDa. ZKT is a member of a novel protein family present in the plant kingdom, which contains a PDZ, a K-box, and a TPR motif. A BLAST search indicated that the ZKT gene is a single gene in Arabidopsis and that ZKT homologs are present in soybean and rice but not in animals. The level of ZKT mRNA decreased after wounding. Antisera from rabbit immunized with recommbinant ZKT protein recognized a protein of 37 kDa in Arabidopsis. Western analysis with anti-ZKT antibody indicated that the level of ZKT protein does not change after wounding. The ZKT protein has consensus sequence motifs for phosphorylation. Immunoprecipitation with anti-ZKT antibody and western analysis with anti-phosphoamino acid antibody indicated that the ZKT protein is phosophorylated at the threonine and serine residues after wounding. These results suggest that the ZKT protein may act as a molecular adaptor regulated by phosphorylation in wound responses.




Amino Acid Motifs; Amino Acid Sequence; Animals; Arabidopsis/metabolism; Arabidopsis Proteins/chemistry; Arabidopsis Proteins/genetics; Arabidopsis Proteins/metabolism; Molecular Sequence Data; Peptides/chemistry; Peptides/genetics; Peptides/metabolism; Protein Structure, Tertiary; Sequence Alignment; Sequence Homology, Amino Acid



Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status



GO:0009611: response to wounding

ECO:0000270: expression pattern evidence used in manual assertion


Seeded From UniProt


See also


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