Purified chitinases and use thereof

Details Purified chitinases and use thereof Purified chitinases and use thereof

1991-06-17

1992-12-22

Cashion, Jr., Merrell C.

Chemistry: molecular biology and microbiology

Enzyme , proenzyme; compositions thereof; process for...

Hydrolase

424 9461, 435183, 514 2, 514 12, 530350, 530371, 530823, C12N 942

Patent

active

051734192

ABSTRACT:
Two chitinases from Trichoderma harzianum P1 (ATCC 74058) show chitin-containing-fungus- and insect-inhibiting activity. The first is an endochitinase having a molecular weight of 36 kDa and an isoelectric point of 5.3.+-.0.2. The second is an exochitinase having a molecular weight of 36 kDa an an isoelectric point of 4.4.+-.0.2. The chitinases can be applied in contact with chitin-containing fungus or insect as an inhibitor thereof. The chitinases can be applied to plants or to soil around plants which need production from a chitinase-containing pest. The chitinases can also be used to isolate genes coding for them which can be inserted into a genome of a plant needing protection from a chitinase-containing pest or into the genome of a microorganism to provide transgenic microorganism useful to produce enzyme or as a biocontrol agent.

REFERENCES:
patent: 4751081 (1988-06-01), Suslow et al.
patent: 4940840 (1990-07-01), Suslow et al.
Sivan et al., J. Gen. Microbiol. vol. 135(3) pp. 675-682 (1989) Biosis Abstract.
Sandhu et al., Enzyme Microb. Technol. vol. 11 pp. 21-25 (1989).
Usui et al., Carbohydrate Res., vol. 203 pp. 65-77 (1990).
de Vries et al., J. Gen. Microbiol., vol. 76, pp. 319-330 (1973).
WPI Abstract, Asahi-Seibutsu JP 2286082 published Nov. 26, 1990.
Tronsmo A., Norwegian Journal of Agricultural Sciences 3:157-161 (1989).
Tronsmo A., Phytopathology 79(10), 1153 (1989) entry #143.

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