Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryology
<p>The proprotein convertases (PCs) comprise a family of subtilisin-like endoproteases that activate precursor proteins (including, prohormones, growth factors, and adhesion molecules) during their transit through secretory pathways or at the cell surface. To explore the evolution of the PC ge...
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doaj-4b1d25af23014289bc9a2c199777c0662020-11-24T23:17:02ZengIvyspring International PublisherInternational Journal of Biological Sciences1449-22882006-01-0123125132Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryologyStéphanie Bertrand, Alain Camasses, Mathilde Paris, Nicholas D. Holland, Hector Escriva<p>The proprotein convertases (PCs) comprise a family of subtilisin-like endoproteases that activate precursor proteins (including, prohormones, growth factors, and adhesion molecules) during their transit through secretory pathways or at the cell surface. To explore the evolution of the PC gene family in chordates, we made a phylogenetic analysis of PC genes found in databases, with special attention to three PC genes of the cephalochordate amphioxus, the closest living invertebrate relative to the vertebrates. Since some vertebrate PC genes are essential for early development, we investigated the expression pattern of the C isoform of the amphioxus PC6 gene (aPC6C). In amphioxus embryos and larvae, aPC6C is expressed at places where epithelia fuse. Several kinds of fusions occur: ectoderm-to-ectoderm during neurulation; mesoderm-to-ectoderm during formation of the preoral ciliated pit; and endoderm-to-ectoderm during formation of the mouth, pharyngeal slits, anus, and external opening of the club-shaped gland. Presumably, at all these sites, aPC6C is activating proteins favoring association between previously disjunct cell populations.</p>http://www.biolsci.org/v02p0125.htm |
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DOAJ |
language |
English |
format |
Article |
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DOAJ |
author |
Stéphanie Bertrand, Alain Camasses, Mathilde Paris, Nicholas D. Holland, Hector Escriva |
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Stéphanie Bertrand, Alain Camasses, Mathilde Paris, Nicholas D. Holland, Hector Escriva Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryology International Journal of Biological Sciences |
author_facet |
Stéphanie Bertrand, Alain Camasses, Mathilde Paris, Nicholas D. Holland, Hector Escriva |
author_sort |
Stéphanie Bertrand, Alain Camasses, Mathilde Paris, Nicholas D. Holland, Hector Escriva |
title |
Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryology |
title_short |
Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryology |
title_full |
Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryology |
title_fullStr |
Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryology |
title_full_unstemmed |
Phylogenetic analysis of Amphioxus genes of the proprotein convertase family, including aPC6C, a marker of epithelial fusions during embryology |
title_sort |
phylogenetic analysis of amphioxus genes of the proprotein convertase family, including apc6c, a marker of epithelial fusions during embryology |
publisher |
Ivyspring International Publisher |
series |
International Journal of Biological Sciences |
issn |
1449-2288 |
publishDate |
2006-01-01 |
description |
<p>The proprotein convertases (PCs) comprise a family of subtilisin-like endoproteases that activate precursor proteins (including, prohormones, growth factors, and adhesion molecules) during their transit through secretory pathways or at the cell surface. To explore the evolution of the PC gene family in chordates, we made a phylogenetic analysis of PC genes found in databases, with special attention to three PC genes of the cephalochordate amphioxus, the closest living invertebrate relative to the vertebrates. Since some vertebrate PC genes are essential for early development, we investigated the expression pattern of the C isoform of the amphioxus PC6 gene (aPC6C). In amphioxus embryos and larvae, aPC6C is expressed at places where epithelia fuse. Several kinds of fusions occur: ectoderm-to-ectoderm during neurulation; mesoderm-to-ectoderm during formation of the preoral ciliated pit; and endoderm-to-ectoderm during formation of the mouth, pharyngeal slits, anus, and external opening of the club-shaped gland. Presumably, at all these sites, aPC6C is activating proteins favoring association between previously disjunct cell populations.</p> |
url |
http://www.biolsci.org/v02p0125.htm |
work_keys_str_mv |
AT st233phaniebertrandalaincamassesmathildeparisnicholasdhollandhectorescriva phylogeneticanalysisofamphioxusgenesoftheproproteinconvertasefamilyincludingapc6camarkerofepithelialfusionsduringembryology |
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