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Echinobase
ECB-ART-41154
Dev Genes Evol 2009 Jun 01;2196:281-8. doi: 10.1007/s00427-009-0289-5.
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Sea urchin arylsulfatase, an extracellular matrix component, is involved in gastrulation during embryogenesis.

Mitsunaga-Nakatsubo K , Akimoto Y , Kawakami H , Akasaka K .


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Arylsulfatases (Arses) have been regarded as lysosomal enzymes because of their hydrolytic activities on synthetic aromatic substrates and their lysosomal localization of their enzymatic activities. Using sea urchin embryos, we previously demonstrated that the bulk of Hemicentrotus Ars (HpArs) does not exhibit enzyme activity and is located on the apical surface of the epithelial cells co-localizing with sulfated polysaccharides. Here we show that HpArs strongly binds to sulfated polysaccharides and that repression of the synthesis by HpArs-morpholino results in retardation of gastrulation in the sea urchin embryo. Accumulation of HpArs protein and sulfated polysaccharides on the apical surface of the epithelial cells in sea urchin larvae is repressed by treatment with beta-aminopropionitrile (BAPN), suggesting that deposition of HpArs and sulfated polysaccharides is dependent on the crosslinking of proteins such as collagen-like molecules. We suggest that HpArs functions by binding to components of the extracellular matrix.

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Genes referenced: arsal LOC100887844 LOC115925116 LOC575336 LOC577694
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References [+] :
Adelson, Sea urchin morphogenesis and cell-hyalin adhesion are perturbed by a monoclonal antibody specific for hyalin. 1988, Pubmed, Echinobase