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. 1991 Mar;95(3):928–933. doi: 10.1104/pp.95.3.928

Sequence Analysis and Comparison of Avocado Fruit and Bean Abscission Cellulases 1,2,3

Mark L Tucker 1, Stephen B Milligan 1,4
PMCID: PMC1077626  PMID: 16668074

Abstract

A 1700 nucleotide cDNA clone for a bean (Phaseolus vulgaris cv Red Kidney) abscission cellulase (endo-(1,4)-β-d-glucanase) has been identified and sequenced. This cDNA clone contains a 1485 nucleotide open reading frame which includes coding sequences for a putative signal peptide and mature protein. The nucleotide and deduced amino acid sequences for the bean abscission cellulase are compared to the previously reported sequences of an avocado fruit ripening cellulase. Optimal alignment of these sequences shows 64% and 50% identically matched nucleotides and amino acids, respectively. Analysis of the deduced amino acid sequences for the mature bean and avocado cellulases indicates that these two proteins share similar molecular weights, position of cysteine residues, and hydropathic character, but have very different isoelectric points and glycosylation. Genomic blot data suggest that the avocado fruit cellulase belongs to a small gene family, whereas the bean abscission cellulase appears to be encoded by a single gene or a few very closely related genes.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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