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Isolation and Characterization of a new Dgalactose- Binding Lectin from Sambucus Racemosa L.

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A new acidic lectin from red elder (Sambucus racemosa L.) bark has been isolated by affinity chromatography and gel filtration. Noteworthy, and in contrast to other Sambucus species, red elder bark lacks acidic non-toxic type 2 ribosome-inactivating proteins but has basic ribosome-inactivating protein activities. The new lectin (SRLbm) shows specificity for N-Ac-Galactosamine / D-Galactose and has an apparent Mr of 30,000. The N-terminal amino acid sequence displays a close homology with other lectins and B chains of non-toxic type 2 ribosome-inactivating proteins nigrins and ebulins present in other Sambucus species. SRLbm triggers red blood cell agglutination in the range 4-12 μg/ml.

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Keywords: bark; d-galactose; lectin; ribosome-inactivating protein; sambucus racemosa

Document Type: Review Article

Publication date: 2003-06-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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