title: Combinatorial expression patterns of heparan sulfate sulfotransferases in zebrafish: III. 2-O-sulfotransferase and C5-epimerases.
abstract: Heparan sulfate (HS) is an unbranched chain of repetitive disaccharides, which specifically binds ligands when attached to the cell surface or secreted extracellularly. HS chains contain sulfated domains, termed the HS fine structure, which give HS specific binding affinities for extracellular ligands. HS 2-O-sulfotransferase (2-OST) catalyzes the transfer of sulfate groups to the 2-O position of uronic acid residues of HS. We report here the characterization and developmental expression patterns of 2-OST in several tissues/organs throughout early zebrafish development, including early cleavage stages, eyes, somites, brain, internal organ primordial, and pectoral fin. The 2-OST gene has spatially and temporally distinct expression, which is a surprise given the essential role of 2-OST in HS fine structure formation. Furthermore, although 2-OST and C5-epimerase are predicted to be interdependent for protein translocation from the endoplasmic reticulum to the Golgi, their expression is not coordinately regulated during zebrafish development.
authors.affiliation: Huntsman Cancer Institute, Center for Children, Department of Oncological Sciences, University of Utah, Salt Lake City, Utah 84112, USA.
authors.forename: Adam B
authors.initials: AB
authors.lastname: Cadwallader
authors.forename: H Joseph
authors.initials: HJ
authors.lastname: Yost
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D016000:Cluster Analysis; D018507:Gene Expression Regulation, Developmental; D017403:In Situ Hybridization; D008969:Molecular Sequence Data; D010802:Phylogeny; D019998:Racemases and Epimerases / Q000378:metabolism*; D017422:Sequence Analysis, DNA; D013045:Species Specificity; D015238:Sulfotransferases / Q000235:genetics / Q000378:metabolism*; D015027:Zebrafish / Q000196:embryology* / Q000378:metabolism; D029961:Zebrafish Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: D029961:Zebrafish Proteins; D015238:Sulfotransferases; C518416:heparan sulfate 2-O-sulfotransferase, zebrafish; C021350:heparitin sulfotransferase; D019998:Racemases and Epimerases