Constitutive expression and alternative splicing of the exons encoding SCRs in Sp152, the sea urchin homologue of complement factor B. Implications on the evolution of the Bf/C2 gene family

@article{Terwilliger2004ConstitutiveEA,
  title={Constitutive expression and alternative splicing of the exons encoding SCRs in Sp152, the sea urchin homologue of complement factor B. Implications on the evolution of the Bf/C2 gene family},
  author={David P. Terwilliger and Lori A. Clow and Paul S. Gross and L Courtney Smith},
  journal={Immunogenetics},
  year={2004},
  volume={56},
  pages={531-543}
}
The purple sea urchin, Strongylocentrotus purpuratus, possesses a non-adaptive immune system including elements homologous to C3 and factor B (Bf) of the vertebrate complement system. SpBf is composed of motifs typical of the Bf/C2 protein family. Expression of Sp152 (encodes SpBf) was identified in the phagocyte type of coelomocyte in addition to gut, pharynx and esophagus, which may have been due to the presence of these coelomocytes in and on all tissues of the animal. Sp152 expression in… CONTINUE READING
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