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http://hdl.handle.net/10397/94319
Title: | Finding species-specific extracellular surface-facing proteomes in toxic dinoflagellates | Authors: | Chan, KKY Kong, HK Tse, SPK Chan, Z Lo, PY Kwok, KWH Lo, SCL |
Issue Date: | Sep-2021 | Source: | Toxins, Sept. 2021, v. 13, no. 9, 624 | Abstract: | As a sequel to our previous report of the existence of species-specific protein/peptide expression profiles (PEPs) acquired by mass spectrometry in some dinoflagellates, we established, with the help of a plasma-membrane-impermeable labeling agent, a surface amphiesmal protein extraction method (SAPE) to label and capture species-specific surface proteins (SSSPs) as well as saxitoxins-producing-species-specific surface proteins (Stx-SSPs) that face the extracellular space (i.e., SSSPsEf and Stx-SSPsEf ). Five selected toxic dinoflagellates, Alexandrium minutum, A. lusitanicum, A. tamarense, Gymnodinium catenatum, and Karenia mikimotoi, were used in this study. Transcrip-tomic databases of these five species were also constructed. With the aid of liquid chromatography linked-tandem mass spectrometry (LC-MS/MS) and the transcriptomic databases of these species, extracellularly facing membrane proteomes of the five different species were identified. Within these proteomes, 16 extracellular-facing and functionally significant transport proteins were found. Fur-thermore, 10 SSSPs and 6 Stx-SSPs were identified as amphiesmal proteins but not facing outward to the extracellular environment. We also found SSSPsEf and Stx-SSPsEf in the proteomes. The potential functional correlation of these proteins towards the production of saxitoxins in dinoflagellates and the degree of species specificity were discussed accordingly. | Keywords: | Cell surface labeling Orthogroup inference Proteomics Toxic dinoflagellates |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Toxins | EISSN: | 2072-6651 | DOI: | 10.3390/toxins13090624 | Rights: | © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Chan, K. K. Y., Kong, H. K., Tse, S. P. K., Chan, Z., Lo, P. Y., Kwok, K. W. H., & Lo, S. C. L. (2021). Finding Species-Specific Extracellular Surface-Facing Proteomes in Toxic Dinoflagellates. Toxins, 13(9), 624 is available at https://doi.org/10.3390/toxins13090624 |
Appears in Collections: | Journal/Magazine Article |
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