Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white.

Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white. Research Abstract Details 

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Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white. Abstract Text:

K Kondo,H Fujio,T Amano,

Three lysozymes (DLs-1, -2, and -3) were purified from Peking-duck egg white by adsorption on CM-Sephadex C-25 resin, followed by CM-Sephadex C-25 and Sephadex G-50 column chromatographies. The three enzymes each moved as a single band, but showed different electrophoretic mobilities, on disc-polyacrylamide gel electrophoresis at pH 4.1. Final yields of DL-1, DL-2, DL-3 were 18.2%, 22.0%, and 6.0%, respectively, from the crude material adsorbed on CM-Sephadex resin. The enzymatic activities of DL-1, DL-2, and DL-3 were 1.53, 1.52, and 1.34 times that of hen egg white lysozyme, respectively, using Micrococcus lysodeikticus cell wall as a substrate at pH 6.2 and 37 degrees C. All the DLs lacked histidine and their amino acid compositions differed from each other by a few amino acid exchanges. The amino acid sequences of DL-2 and DL-3 differed from that of DL-1 by two displacements (Ser-37 to Gly and Gly-71 to Arg) and three displacements (Pro-79 to Arg in addition to the same substitutions), respectively. In comparison with Duck II and Duck III lysozymes from Kaki-duck (Hermann and Jollès (1970) Biochim. Biophys. Acta 200, 178-179; Hermann et al. (1971) Eur. J. Biochem. 24, 12-17) as regards amino acid sequences, Duck II is identical to DL-1 except for one displacement of Gln-57 in DL-1 to Glu in Duck II, while Duck III is rather different from our three lysozymes. All DLs gave single precipitin lines with any rabbit antisera against DLs and each precipitin line fused completely with that of any of the DLs in Ouchterlony double diffusion tests. However, the radiobinding inhibition assay showed that some anti-DL antisera clearly discriminated fine differences among the three DLs. The displacement at residue 79 (Pro in equilibrium Arg) gave the clearest immunological difference among the three kinds of displacements found in DLs.

Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white. Publishing Authors By Initials

K Kondo,H Fujio,T Amano,

For similar enzymes and coenzymes: enzymes: hydrolases: glycoside hydrolases: muramidase research abstracts see: enzymes and coenzymes: enzymes: hydrolases: glycoside hydrolases: muramidase research

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Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 91

Page Numbers: 571-87

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Feb

YEAR: 1982

Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white. Information

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LANGUAGE: eng

NlmUniqueID: 376600

Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white. Keywords Mesh Terms:

KEYWORDS: Muramidase

MESH TERMS: isolation & purification

Chemical & Substance for Abstract: Chemical and immunological properties and amino acid sequences of three lysozymes from Peking-duck egg white. Information

Substance Name: Muramidase

Registry Number: EC 3.2.1.17

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Country: JAPAN

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MEDLINETA: J Biochem

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