Aplysia capsulin is localized to egg capsules and egg cordon sheaths and shares sequence homology with Drosophila dec-1 gene products

Scott F Cummins; G T Nagle

doi:10.1016/j.peptides.2004.11.006

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Aplysia capsulin is localized to egg capsules and egg cordon sheaths and shares sequence homology with Drosophila dec-1 gene products

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Aplysia capsulin is localized to egg capsules and egg cordon sheaths and shares sequence homology with Drosophila dec-1 gene products

Scott F Cummins and G T Nagle

Peptides, Vol.26(4), pp.589-596

2005

DOI: https://doi.org/10.1016/j.peptides.2004.11.006

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Abstract

Fisheries Sciences

Aplysia

capsulin

egg capsule protein

Differential library screening of an albumen gland cDNA library, Western blot analysis, protein expression, immunolocalization studies, comparative genomics, and secretion assays identified a major Aplysia californica albumen gland protein ('capsulin') that is localized to egg capsules and to the sheaths of the egg cordon. Capsulin shared sequence homology with eggshell proteins encoded by the Drosophila dec-1 gene. The 1790-amino acid A. californica precursor contains 17 repeat sequences that are flanked by basic residue processing sites. The numerous proteolytic processing sites may facilitate the breakdown of capsulin prior to when veliger larvae break out of egg capsules as free-swimming larvae. An Aplysia brasiliana capsulin repeat sequence was 97% identical to its A. californica homolog. Capsulin fragments were not detected in the eluates of egg cordons, suggesting that capsulin is not a candidate water-borne pheromone precursor

Details

Title: Aplysia capsulin is localized to egg capsules and egg cordon sheaths and shares sequence homology with Drosophila dec-1 gene products
Authors: Scott F Cummins (Author) - University of Texas, United States
G T Nagle (Author) - University of Texas, United States
Publication details: Peptides, Vol.26(4), pp.589-596
Publisher: Elsevier Inc.
Date published: 2005
DOI: 10.1016/j.peptides.2004.11.006
ISSN: 0196-9781
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99449429102621
Output Type: Journal article

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Web Of Science research areas: Biochemistry & Molecular Biology; Endocrinology & Metabolism; Pharmacology & Pharmacy