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Rhizostomins

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Type of protein found in jellyfish

Rhizostomins are proteins that are part of a pigment family only found in jellyfish in the order Rhizostomeae. These proteins are composed of a Kringle domain inserted within a cysteine-rich Frizzled domain, first identified in 2004 as the blue pigment in the barrel jellyfish Rhizostoma pulmo. It also appears in rhizostome jellyfish that do not appear blue, such as in Nemopilema nomurai, which typically presents red-brown coloration. It has been hypothesized that pigments in this family act as a sunscreen, protecting from harmful ultraviolet radiation. Natural blue pigments, such as some of the rhizostomins, are rare and there is a growing need for industrial purposes.

References

  1. ^ Lawley, Jonathan W.; Carroll, Anthony R.; McDougall, Carmel (2021-09-24). "Rhizostomins: A Novel Pigment Family From Rhizostome Jellyfish (Cnidaria, Scyphozoa)". Frontiers in Marine Science. 8: 752949. doi:10.3389/fmars.2021.752949. hdl:10072/409365. ISSN 2296-7745.
  2. Bulina, Maria E.; Lukyanov, Konstantin A.; Yampolsky, Ilia V.; Chudakov, Dmitry M.; Staroverov, Dmitry B.; Shcheglov, Alexander S.; Gurskaya, Nadya G.; Lukyanov, Sergey (October 2004). "New Class of Blue Animal Pigments Based on Frizzled and Kringle Protein Domains". Journal of Biological Chemistry. 279 (42): 43367–43370. doi:10.1074/jbc.C400337200. PMID 15297465.
  3. Blanquet, R. S.; Phelan, M. A. (1987-04-01). "An unusual blue mesogleal protein from the mangrove jellyfish Cassiopea xamachana". Marine Biology. 94 (3): 423–430. Bibcode:1987MarBi..94..423B. doi:10.1007/BF00428249. ISSN 1432-1793. S2CID 84985231.
  4. Santos, Marcela Colombo dos; Bicas, Juliano Lemos (March 2021). "Natural blue pigments and bikaverin". Microbiological Research. 244: 126653. doi:10.1016/j.micres.2020.126653. PMID 33302226. S2CID 228100424.
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