Comparisons Between 3 Invertebrates Igkappa Genes

What is it about?

We attempt to establish, in the present paper, comparisons between 3 classes of Echinodermata (Asterids, Ophuirids, Crinoïds) out of 5 classes, at the level of genomes. Mainly we compare the IGKappa genes of these 3 classes which belong to Invertebrates. The Ophuirid IGKappa gene from Ophiocomina nigra seems to be the most evolved, in terms of immune functions, when compared to the two other ones.

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Photo by Diana Polekhina on Unsplash

Photo by Diana Polekhina on Unsplash

Why is it important?

As previously described, we observe something which recalls as an evolution between these3 Echinodermata (Invertebrates): 1)Antedon bifida (Crinoïds) 2)Asterias rubens (Asterids) 3)Ophiocomina nigra (Ophuirids) The Antedon bifida IGKappa gene with its two predicted amino-acids sequence presents no Immunoglobulin site; the Asterias rubens IGKappa gene:1 Immunoglobulin Domain; the Ophiocomina nigra IGKappa gene: 2 Immunoglobulin Domains at the level of constant part and the variable part of Immunoglobulins (entiere homology with human IGK) [6] At our knowledge it seems highly important to give that data in terms of emergence of Immunoglobulins in Invertebrates when compared to Vertebrates.

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