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Open AccessResearch article

The Caenorhabditis globin gene family reveals extensive nematode-specific radiation and diversification

David Hoogewijs1 email, Sasha De Henau1 email, Sylvia Dewilde2 email, Luc Moens2 email, Marjolein Couvreur3 email, Gaetan Borgonie3 email, Serge N Vinogradov4 email, Scott W Roy5 email and Jacques R Vanfleteren1 email

Department of Biology and Center for Molecular Phylogeny and Evolution, Ghent University, B-9000 Ghent, Belgium

Department of Biomedical Sciences, University of Antwerp, B-2610 Antwerp, Belgium

Department of Biology, Nematology section, Ghent University, 9000 Ghent, Belgium

Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, Michigan 48201, USA

National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20814, USA

author email corresponding author email

BMC Evolutionary Biology 2008, 8:279doi:10.1186/1471-2148-8-279

Published: 9 October 2008

Additional files

Additional file 1:

Overview of intron insertion positions in Caenorhabditis, Brugia malayi and Pristionchus pacificus globins. Identical Caenorhabditis-Pristionchus intron positions are marked in red, identical Brugia-Pristionchus intron postions in blue and identical Brugia-Caenorhabditis intron postions in green. Phase 0 introns separate two consecutive codons (annotated by the number of the amino acid residue, a dot and number 0). Phase 1 and phase 2 introns are inserted following the first or second base of a codon, respectively (annotated by the number of the amino acid, a dot and number 1 or 2, respectively). Introns inserted in the N-terminal extensions are referred to as NA counting from amino acid 1, HC for those inserted in the C-terminal extension starting with the first amino acid after the H-helix.

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Additional file 2:

Manual alignment of nematode globins.

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Additional file 3:

Similarity matrix of all 33 C. elegans globins based on the alignment provided in Additional file 2.

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Additional file 4:

Unrooted bayesian trees based on matrices of five-way orthologs from C. elegans, C. briggsae, C. remanei, Pristionchus pacificus and Brugia malayi. glb globin; gst glutathione S-transferase; ast astacin, sod superoxide dismutase, acr nicotinic acetylcholine receptors; wrt hedgehog-related (warthog) proteins; abc ATP-binding proteins.

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