A new lysozyme from the eastern oyster, Crassostrea virginica, and a possible evolutionary pathway for i-type lysozymes in bivalves from host defense to digestion |
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| Authors: | Qinggang Xue Michael E Hellberg Kevin L Schey Naoki Itoh Ron I Eytan Richard K Cooper Jerome F La Peyre |
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| Affiliation: | (1) Department of Veterinary Science, Louisiana State University Agricultural Center, 70830 Baton Rouge, LA, USA;(2) Department of Biological Sciences, Louisiana State University, 70830 Baton Rouge, LA, USA;(3) Department of Cell and Molecular Pharmacology, Medical University of South Carolina, 29425 Charleston, SC, USA;(4) Mass Spectrometry Center, Department of Biochemistry, Vanderbilt University, 37240 Nashville, TN, USA;(5) Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori Amamiya-machi, Aoba-ku, 981-8555 Sendai, Miyagi, Japan |
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| Abstract: | Background Lysozymes are enzymes that lyse bacterial cell walls, an activity widely used for host defense but also modified in some instances for digestion. The biochemical and evolutionary changes between these different functional forms has been well-studied in the c-type lysozymes of vertebrates, but less so in the i-type lysozymes prevalent in most invertebrate animals. Some bivalve molluscs possess both defensive and digestive lysozymes. |
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