Characterization of a Gene Family Encoding SEA (Sea-urchin Sperm Protein, Enterokinase and Agrin)-Domain Proteins with Lectin-Like and Heme-Binding Properties from Schistosoma japonicum

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Characterization of a Gene Family Encoding SEA (Sea-urchin Sperm Protein, Enterokinase and Agrin)-Domain Proteins with Lectin-Like and Heme-Binding Properties from Schistosoma japonicum

BACKGROUND We previously identified a novel gene family dispersed in the genome of Schistosoma japonicum by retrotransposon-mediated gene duplication mechanism. Although many transcripts were identified, no homolog was readily identifiable from sequence information. METHODOLOGY/PRINCIPAL FINDINGS Here, we utilized structural homology modeling and biochemical methods to identify remote homolog...

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SEA (sea-urchin sperm protein, enterokinase and agrin)-module cleavage, association of fragments and membrane targeting of rat intestinal mucin Muc3.

In a previous study we showed, by transient expression studies in COS-1 cells, that the C-terminal domain of rat intestinal membrane mucin Muc3 was cleaved between glycine and serine within a GSIVV (one-letter) amino acid sequence during its residence in the endoplasmic reticulum. The extracellular domain fragment remained linked to the membrane-associated fragment by non-covalent interactions....

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A sea urchin gene encoding dystrophin-related proteins.

The gene which is defective in Duchenne muscular dystrophy (DMD) is the largest known gene. The product of the gene in muscle, dystrophin, is a 427 kDa protein. The same gene encodes at least six additional products: two non-muscle dystrophin isoforms transcribed from promoters located in the 5'-end region of the gene and four smaller proteins transcribed from internal promoters located further...

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Sea Urchin Sperm Guanylate Cyclase

The Lubrol-dispersed guanylate cyclase from sea urchin sperm was purified and isolated essentially free of detergent by GTP affinity chromatography, DEAE-Sephadex chromatography, and gel filtration. After removal of the detergent, the enzyme remained in solution in the presence of 20% glycerol. The specific activity of the purified enzyme was about 12 pmol of guanosine 3’:5’-monophosphate (cycl...

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Carbohydrate Specificity of Sea a Cell Surface Lectin Mediating Urchin Sperm Bindin: Sperm-Egg Adhesion

We have examined the carbohydrate specificity of bindin, a sperm protein responsible for the adhesion of sea urchin sperm to eggs, by investigating the interaction of a number of polysaccharides and glycoconjugates with isolated bindin. Several of these polysaccharides inhibit the agglutination of eggs by bindin particles. An egg surface polysaccharide was found to be the most potent inhibitor ...

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ژورنال

عنوان ژورنال: PLoS Neglected Tropical Diseases

سال: 2014

ISSN: 1935-2735

DOI: 10.1371/journal.pntd.0002644