HLA-E Gene from Ophiocomina Nigra (Echinodermata-Invertebrates): Bioinformatics Data
Michel Leclerc*
Corresponding Author: Michel Leclerc, 556 rue Isabelle Romée, 45640 Sandillon, France.
Received: January 11, 2022; Revised: January 24, 2022, ; Accepted: January 27, 2022 Available Online: March 14, 2022
Citation: Leclerc M. (2022) HLA-E Gene from Ophiocomina Nigra (Echinodermata-Invertebrates): Bioinformatics Data. Int J Biopro Biotechnol Advance, 8(4): 459-461.
Copyrights: ©2022 Leclerc M. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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HLA-E gene from MHC system has been recently discovered, in our laboratory, in Invertebrates. Blasts were performed against different species to find or not homologies. Results were given in the precedent communication.


In 2020, we discovered for the first time, MHC genes in Invertebrates and particularly in Echinodermata [1,2]. More recently, in 2022 a biosynthesis of HLA-E (Class I, MHC) gene from O. nigra was performed [3].
The aim of this work is to analyze HLA-E DNA sequence.


Starting material: DNA sequence of HLA-E transcriptome
  1. Blastn original sequence
Database: Standard databases were used
We also optimize for: Highly similar sequences (mega blast)
We recall that Molecule type is DNA
Its query length is 281
We find more than 100 sequences producing significant alignments.
First results appear in the table below Table 1.
  1. BlastX original sequence: The Molecule type is again DNA with a query length of 281
The Database which is used consists in: non-redundant protein sequences (nr)
We obtain more than 100 sequences producing significant alignments
The table is recapitulated as following in Table 2.
Results summarized in the tables show homologies between the Ophiocomina nigra HLA-E gene and various proteins issued from Staphylococcus aureus to human Chromosome 13 which is sometimes implicated in human trisomy We note also a strong homology with Macaca fascicularis.: 91,86% of identity.
Mainly we retain that O. nigra HLA-E gene exists in “its own right” and in its amplification in plasmid [3].

  1. Leclerc M (2020) Evidence of MHC Class I and Class II Genes in Echinodermata. Proteomics Bioinformatics 2(1): 59-61
  2. Leclerc M (2021) Biosynthesis « De Novo » of the Ophuirid Ophiocomina Nigra Igkappa Gene. J Clin Class Immunol 1(1): 1-4.
  3. Leclerc M (2022) to be published.