Properties of a ribonuclease from Aedes aegypti larvae

Mary Ann Fritz; Ann Marie Fallon

doi:10.1016/0305-0491(87)90350-6

Properties of a ribonuclease from Aedes aegypti larvae

Mary Ann Fritz, Ann Marie Fallon

Entomology

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2 Scopus citations

Abstract

1. 1. The properties of a soluble ribonuclease from Aedes aegypti larvae have been compared with ribonuclease activity in adult female tissue. 2. 2. In larval extracts ribonuclease activity was maximal at 40-45°C whereas activity in tissue from adult females was highest at 50°C. 3. 3. Ribonuclease activity that was recovered in a 20-60% ammonium sulfate precipitate was further purified by batch elution from DEAE-Sephacel and from carboxymethylcellulose. 4. 4. Ribonuclease activity in the partially purified fraction was sensitive to EDTA, stimulated by magnesium, had a pH optimum at 9.0 and a M_r of 45,000. 5. 5. Agarose gels containing yeast RNA substrate were used to monitor partial purification of the larval ribonuclease.

Original language	English (US)
Pages (from-to)	595-601
Number of pages	7
Journal	Comparative Biochemistry and Physiology -- Part B: Biochemistry and
Volume	88
Issue number	2
DOIs	https://doi.org/10.1016/0305-0491(87)90350-6
State	Published - 1987

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title = "Properties of a ribonuclease from Aedes aegypti larvae",

abstract = "1. 1. The properties of a soluble ribonuclease from Aedes aegypti larvae have been compared with ribonuclease activity in adult female tissue. 2. 2. In larval extracts ribonuclease activity was maximal at 40-45°C whereas activity in tissue from adult females was highest at 50°C. 3. 3. Ribonuclease activity that was recovered in a 20-60% ammonium sulfate precipitate was further purified by batch elution from DEAE-Sephacel and from carboxymethylcellulose. 4. 4. Ribonuclease activity in the partially purified fraction was sensitive to EDTA, stimulated by magnesium, had a pH optimum at 9.0 and a Mr of 45,000. 5. 5. Agarose gels containing yeast RNA substrate were used to monitor partial purification of the larval ribonuclease.",

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AU - Fallon, Ann Marie

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N2 - 1. 1. The properties of a soluble ribonuclease from Aedes aegypti larvae have been compared with ribonuclease activity in adult female tissue. 2. 2. In larval extracts ribonuclease activity was maximal at 40-45°C whereas activity in tissue from adult females was highest at 50°C. 3. 3. Ribonuclease activity that was recovered in a 20-60% ammonium sulfate precipitate was further purified by batch elution from DEAE-Sephacel and from carboxymethylcellulose. 4. 4. Ribonuclease activity in the partially purified fraction was sensitive to EDTA, stimulated by magnesium, had a pH optimum at 9.0 and a Mr of 45,000. 5. 5. Agarose gels containing yeast RNA substrate were used to monitor partial purification of the larval ribonuclease.

AB - 1. 1. The properties of a soluble ribonuclease from Aedes aegypti larvae have been compared with ribonuclease activity in adult female tissue. 2. 2. In larval extracts ribonuclease activity was maximal at 40-45°C whereas activity in tissue from adult females was highest at 50°C. 3. 3. Ribonuclease activity that was recovered in a 20-60% ammonium sulfate precipitate was further purified by batch elution from DEAE-Sephacel and from carboxymethylcellulose. 4. 4. Ribonuclease activity in the partially purified fraction was sensitive to EDTA, stimulated by magnesium, had a pH optimum at 9.0 and a Mr of 45,000. 5. 5. Agarose gels containing yeast RNA substrate were used to monitor partial purification of the larval ribonuclease.

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Properties of a ribonuclease from Aedes aegypti larvae

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