RRC ID 32409
著者 Linnemannstöns K, Ripp C, Honemann-Capito M, Brechtel-Curth K, Hedderich M, Wodarz A.
タイトル The PTK7-related transmembrane proteins off-track and off-track 2 are co-receptors for Drosophila Wnt2 required for male fertility.
ジャーナル PLoS Genet
Abstract Wnt proteins regulate many developmental processes and are required for tissue homeostasis in adult animals. The cellular responses to Wnts are manifold and are determined by the respective Wnt ligand and its specific receptor complex in the plasma membrane. Wnt receptor complexes contain a member of the Frizzled family of serpentine receptors and a co-receptor, which commonly is a single-pass transmembrane protein. Vertebrate protein tyrosine kinase 7 (PTK7) was identified as a Wnt co-receptor required for control of planar cell polarity (PCP) in frogs and mice. We found that flies homozygous for a complete knock-out of the Drosophila PTK7 homolog off track (otk) are viable and fertile and do not show PCP phenotypes. We discovered an otk paralog (otk2, CG8964), which is co-expressed with otk throughout embryonic and larval development. Otk and Otk2 bind to each other and form complexes with Frizzled, Frizzled2 and Wnt2, pointing to a function as Wnt co-receptors. Flies lacking both otk and otk2 are viable but male sterile due to defective morphogenesis of the ejaculatory duct. Overexpression of Otk causes female sterility due to malformation of the oviduct, indicating that Otk and Otk2 are specifically involved in the sexually dimorphic development of the genital tract.
巻・号 10(7)
ページ e1004443
公開日 2014-7-1
DOI 10.1371/journal.pgen.1004443
PII PGENETICS-D-13-01637
PMID 25010066
PMC PMC4091708
MeSH Animals Cell Membrane / genetics Cell Membrane / metabolism Cell Polarity / genetics* Drosophila / genetics Drosophila / growth & development Drosophila Proteins / genetics* Drosophila Proteins / metabolism Fertility / genetics* Frizzled Receptors / metabolism Gene Expression Regulation, Developmental Gene Knockout Techniques Male Mice Receptor Protein-Tyrosine Kinases / genetics* Receptor Protein-Tyrosine Kinases / metabolism Receptors, Wnt / genetics Receptors, Wnt / metabolism Sex Determination Processes / genetics Wnt2 Protein / genetics* Wnt2 Protein / metabolism
IF 5.175
引用数 20
WOS 分野 GENETICS & HEREDITY
リソース情報
ショウジョウバエ DGRC#115192 DGRC#122107