title: Structure of acrosome reaction-inducing substance in the jelly coat of starfish eggs: a mini review.
abstract: Our knowledge at present on the structure of acrosome-reaction inducing substance (ARIS) in the jelly coat of starfish eggs is summarized. ARIS ia a proteoglycan-like molecule consisting of very long, linear, and highly sulfated glycans and three ARIS proteins, ARIS1-3. Detailed structures of the major glycan of ARIS and of ARIS1-3 are discussed. 3D-models of ARIS glycans are also presented. Phylogenetic distribution of ARIS proteins and/or genes indicates that ARIS genes are well preserved from the Ctenophore to Cephalochordata. In the Echinodermata, ARIS1-3 and ARIS genes were detected in all classes except for sea urchins.
authors.affiliation: The Open University of Japan, Chiba, Japan. hoshim@ouj.ac.jp
authors.forename: Motonori
authors.initials: M
authors.lastname: Hoshi
authors.forename: Hideaki
authors.initials: H
authors.lastname: Moriyama
authors.forename: Midori
authors.initials: M
authors.lastname: Matsumoto
mesh_terms: D020101:Acrosome Reaction; D000818:Animals; D015394:Molecular Structure; D011134:Polysaccharides / Q000737:chemistry / Q000378:metabolism*; D013084:Sperm-Ovum Interactions; D013215:Starfish / Q000378:metabolism / Q000502:physiology*
chemical_list: D011134:Polysaccharides