Drosophila Heparan Sulfate 6-O-Endosulfatase Sulf1 Facilitates Wingless (Wg) Protein Degradation.

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Title: Drosophila Heparan Sulfate 6-O-Endosulfatase Sulf1 Facilitates Wingless (Wg) Protein Degradation.
Authors: Kleinschmit, Adam1, Takemura, Masahiko1, Dejima, Katsufumi1, Pui Yee Choi1, Nakato, Hiroshi1 nakat003@umn.edu
Source: Journal of Biological Chemistry. 2/15/2013, Vol. 288 Issue 7, p5081-5089. 9p.
Subjects: Heparan sulfate proteoglycans, Heparan sulfate, Sulfotransferases, Golgi apparatus, Proteoglycans, Drosophila, Sulfates
Abstract: Heparan sulfate proteoglycans regulate various physiological and developmental processes through interactions with a number of protein ligands. Heparan sulfate (HS)-ligand binding depends on the amount and patterns of sulfate groups on HS, which are controlled by various HS sulfotransferases in the Golgi apparatus as well as extracellular 6-O-endosulfatases called "Sulfs." Sulfs are a family of secreted molecules that specifically remove 6-O-sulfate groups within the highly sulfated regions on HS. Vertebrate Sulfs promote Wnt signaling, whereas the only Drosophila homologue of Sulfs, Sulf1, negatively regulates Wingless (Wg) signaling. To understand the molecular mechanism for the negative regulation of Wg signaling by Sulf1, we studied the effects of Sulf1 on HS-Wg interaction and Wg stability. Sulf1 overexpression strongly inhibited the binding of Wg to Dally, a potential target heparan sulfate proteoglycan of Sulf1. This effect of Drosophila Sulf1 on the HS-Wg interaction is similar to that of vertebrate Sulfs. Using in vitro, in vivo, and ex vivo systems, we show that Sulf1 reduces extracellularWgprotein levels, at least partly by facilitatingWg degradation. In addition, expression of human Sulf1 in the Drosophila wing disc lowers the levels of extracellular Wg protein, as observed for Drosophila Sulf1. Our study demonstrates that vertebrate and Drosophila Sulfs have an intrinsically similar activity and that the function of Sulfs in the fate of Wnt/Wg ligands is context-dependent. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Biological Chemistry is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Drosophila Heparan Sulfate 6-O-Endosulfatase Sulf1 Facilitates Wingless (Wg) Protein Degradation.
– Name: Author
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  Data: <searchLink fieldCode="AR" term="%22Kleinschmit%2C+Adam%22">Kleinschmit, Adam</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Takemura%2C+Masahiko%22">Takemura, Masahiko</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dejima%2C+Katsufumi%22">Dejima, Katsufumi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Pui+Yee+Choi%22">Pui Yee Choi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nakato%2C+Hiroshi%22">Nakato, Hiroshi</searchLink><relatesTo>1</relatesTo><i> nakat003@umn.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Biological+Chemistry%22">Journal of Biological Chemistry</searchLink>. 2/15/2013, Vol. 288 Issue 7, p5081-5089. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Heparan+sulfate+proteoglycans%22">Heparan sulfate proteoglycans</searchLink><br /><searchLink fieldCode="DE" term="%22Heparan+sulfate%22">Heparan sulfate</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfotransferases%22">Sulfotransferases</searchLink><br /><searchLink fieldCode="DE" term="%22Golgi+apparatus%22">Golgi apparatus</searchLink><br /><searchLink fieldCode="DE" term="%22Proteoglycans%22">Proteoglycans</searchLink><br /><searchLink fieldCode="DE" term="%22Drosophila%22">Drosophila</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfates%22">Sulfates</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Heparan sulfate proteoglycans regulate various physiological and developmental processes through interactions with a number of protein ligands. Heparan sulfate (HS)-ligand binding depends on the amount and patterns of sulfate groups on HS, which are controlled by various HS sulfotransferases in the Golgi apparatus as well as extracellular 6-O-endosulfatases called "Sulfs." Sulfs are a family of secreted molecules that specifically remove 6-O-sulfate groups within the highly sulfated regions on HS. Vertebrate Sulfs promote Wnt signaling, whereas the only Drosophila homologue of Sulfs, Sulf1, negatively regulates Wingless (Wg) signaling. To understand the molecular mechanism for the negative regulation of Wg signaling by Sulf1, we studied the effects of Sulf1 on HS-Wg interaction and Wg stability. Sulf1 overexpression strongly inhibited the binding of Wg to Dally, a potential target heparan sulfate proteoglycan of Sulf1. This effect of Drosophila Sulf1 on the HS-Wg interaction is similar to that of vertebrate Sulfs. Using in vitro, in vivo, and ex vivo systems, we show that Sulf1 reduces extracellularWgprotein levels, at least partly by facilitatingWg degradation. In addition, expression of human Sulf1 in the Drosophila wing disc lowers the levels of extracellular Wg protein, as observed for Drosophila Sulf1. Our study demonstrates that vertebrate and Drosophila Sulfs have an intrinsically similar activity and that the function of Sulfs in the fate of Wnt/Wg ligands is context-dependent. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Biological Chemistry is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1074/jbc.M112.447029
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 5081
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      – SubjectFull: Heparan sulfate proteoglycans
        Type: general
      – SubjectFull: Heparan sulfate
        Type: general
      – SubjectFull: Sulfotransferases
        Type: general
      – SubjectFull: Golgi apparatus
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      – SubjectFull: Proteoglycans
        Type: general
      – SubjectFull: Drosophila
        Type: general
      – SubjectFull: Sulfates
        Type: general
    Titles:
      – TitleFull: Drosophila Heparan Sulfate 6-O-Endosulfatase Sulf1 Facilitates Wingless (Wg) Protein Degradation.
        Type: main
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            NameFull: Kleinschmit, Adam
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            NameFull: Takemura, Masahiko
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            NameFull: Dejima, Katsufumi
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            NameFull: Pui Yee Choi
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            NameFull: Nakato, Hiroshi
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            – D: 15
              M: 02
              Text: 2/15/2013
              Type: published
              Y: 2013
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              Value: 288
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              Value: 7
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            – TitleFull: Journal of Biological Chemistry
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