Sandbox Reserved 1100

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The organisation of the structure of the Adiponectin receptor 1 is the opposite to [[G protein-coupled receptor]] family. Indeed, the Adiponectin receptor has an internal <scene name='82/829353/N-terminus_domain/2'>N-terminus domain</scene> and an external <scene name='82/829353/C-terminus_domain/3'>C-terminus domain</scene> while the G-protein family has an internal N-terminus domain and an external C-terminus domain. <ref name="doc3"> Takashi Kadowaki and Toshimasa Yamauchi et al. « Adiponectin and adiponectin receptors». 2015 https://www.ncbi.nlm.nih.gov/pubmed/15897298</ref> <ref name="doc1"/> <ref name="doc5"> Parker-Duffen JL, Nakamura K, Silver M, Zuriaga MA, MacLauchlan S, Aprahamian TR, Walsh K et al. «Divergent roles for adiponectin receptor 1 (AdipoR1) and AdipoR2 in mediating revascularization and metabolic dysfunction in vivo.» 17 April 2014 : https://www.ncbi.nlm.nih.gov/pubmed/24742672</ref>
The organisation of the structure of the Adiponectin receptor 1 is the opposite to [[G protein-coupled receptor]] family. Indeed, the Adiponectin receptor has an internal <scene name='82/829353/N-terminus_domain/2'>N-terminus domain</scene> and an external <scene name='82/829353/C-terminus_domain/3'>C-terminus domain</scene> while the G-protein family has an internal N-terminus domain and an external C-terminus domain. <ref name="doc3"> Takashi Kadowaki and Toshimasa Yamauchi et al. « Adiponectin and adiponectin receptors». 2015 https://www.ncbi.nlm.nih.gov/pubmed/15897298</ref> <ref name="doc1"/> <ref name="doc5"> Parker-Duffen JL, Nakamura K, Silver M, Zuriaga MA, MacLauchlan S, Aprahamian TR, Walsh K et al. «Divergent roles for adiponectin receptor 1 (AdipoR1) and AdipoR2 in mediating revascularization and metabolic dysfunction in vivo.» 17 April 2014 : https://www.ncbi.nlm.nih.gov/pubmed/24742672</ref>
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The Adiponectin receptor 1 contains <scene name='82/829353/7helices/1'>seven transmembrane helices</scene> linked thanks to three extracellular loops and three intracellular loops. The <scene name='82/829353/Helix1/2'>helix I</scene> is formed by the residues 135 to 157, <scene name='82/829353/Helix2/2'>helix II</scene> by the residues 169 to 192, the <scene name='82/829353/Helix3/2'>helix III</scene> by the residues 198 to 227, the <scene name='82/829353/Helix4/2'>helice IV</scene> by the residues 232 to 252, the <scene name='82/829353/Helice5/2'>helix V</scene> by the residues 264 to 288 <scene name='82/829353/Helix6/2'>heliX VI</scene> by the residues 305 to 319 and the <scene name='82/829353/Helix7/2'>helix VII</scene> by the residues 336 to 364 .Besides, the <scene name='82/829353/Helix3/2'>helix III</scene> and <scene name='82/829353/Helix7/2'>VII</scene> are longer than the other helices. These <scene name='82/829353/7tm/2'>seven transmembrane helices</scene> have a clockwise circular specific organisation (from helix I to helix VII) and form a bundle.
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The Adiponectin receptor 1 contains <scene name='82/829353/7helices/1'>seven transmembrane helices</scene> linked thanks to three <scene name='82/829353/3externalloop/1'>extracellular loops</scene> and three <scene name='82/829353/3externalloop/1'>intracellular loops</scene>. The <scene name='82/829353/Helix1/2'>helix I</scene> is formed by the residues 135 to 157, <scene name='82/829353/Helix2/2'>helix II</scene> by the residues 169 to 192, the <scene name='82/829353/Helix3/2'>helix III</scene> by the residues 198 to 227, the <scene name='82/829353/Helix4/2'>helice IV</scene> by the residues 232 to 252, the <scene name='82/829353/Helice5/2'>helix V</scene> by the residues 264 to 288 <scene name='82/829353/Helix6/2'>heliX VI</scene> by the residues 305 to 319 and the <scene name='82/829353/Helix7/2'>helix VII</scene> by the residues 336 to 364 .Besides, the <scene name='82/829353/Helix3/2'>helix III</scene> and <scene name='82/829353/Helix7/2'>VII</scene> are longer than the other helices. These <scene name='82/829353/7tm/2'>seven transmembrane helices</scene> have a clockwise circular specific organisation (from helix I to helix VII) and form a bundle.
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Concerning the extracellular faces, the three extracellular loops which connect the transmembrane helices are exposed and it is the same for the <scene name='82/829353/C-terminus_domain/3'>C-terminus domain</scene>. Besides, <scene name='82/829353/Helix3/2'>helix III</scene> and the <scene name='82/829353/Helix7/2'>VII</scene> are longer than the other helices and as a result the <scene name='82/829353/C-terminus_domain/3'>C-terminus domain</scene> two turns of the <scene name='82/829353/Helix7/2'>VII</scene> are exposed too. <ref name="doc1"/>
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Concerning the extracellular faces, the three <scene name='82/829353/3externalloop/1'>extracellular loops</scene> which connect the transmembrane helices are exposed and it is the same for the <scene name='82/829353/C-terminus_domain/3'>C-terminus domain</scene>. Besides, <scene name='82/829353/Helix3/2'>helix III</scene> and the <scene name='82/829353/Helix7/2'>VII</scene> are longer than the other helices and as a result the <scene name='82/829353/C-terminus_domain/3'>C-terminus domain</scene> two turns of the <scene name='82/829353/Helix7/2'>VII</scene> are exposed too. <ref name="doc1"/>
In the middle of the seven transmembrane helices there is a large internal cavity where a <scene name='82/829353/Zinc-binding_site/2'>zinc-binding site</scene> can be found. This cavity located from the cytoplasmic surface to the middle of the outer lipid layer of the membrane has small openings between the <scene name='82/829353/Helice5/2'>helix V</scene> and <scene name='82/829353/Helix6/2'>VI</scene>, and between the <scene name='82/829353/Helix4/2'>helice IV</scene> and <scene name='82/829353/Helix6/2'>VI</scene>. It has been assumed that these openings are involved in the entrance and exit of both substrate and product.
In the middle of the seven transmembrane helices there is a large internal cavity where a <scene name='82/829353/Zinc-binding_site/2'>zinc-binding site</scene> can be found. This cavity located from the cytoplasmic surface to the middle of the outer lipid layer of the membrane has small openings between the <scene name='82/829353/Helice5/2'>helix V</scene> and <scene name='82/829353/Helix6/2'>VI</scene>, and between the <scene name='82/829353/Helix4/2'>helice IV</scene> and <scene name='82/829353/Helix6/2'>VI</scene>. It has been assumed that these openings are involved in the entrance and exit of both substrate and product.
In this cavity, there is a zinc ion which is coordinated thanks to three histidine residues. These three histidine residues are <scene name='82/829353/H191/2'>H191</scene> in the helix II, <scene name='82/829353/H337/2'>H337</scene> and <scene name='82/829353/H341/2'>H341</scene> in the <scene name='82/829353/Helix7/2'>helix VII</scene>. As a result, the zinc ion is in the intracellular layer of the membrane, in the neighbourhood of 4° deep from the inner surface of the plasma membrane. Thanks to its tetrahedral coordination, this zinc ion binds the <scene name='82/829353/Helix2/2'>helix II</scene>, <scene name='82/829353/Helix3/2'>III</scene> and <scene name='82/829353/Helix7/2'>VII</scene> together. The adiponectin-stimulated AMPK phosphorylation doesn’t directly require the zinc binding site, nevertheless it has been supposed that the zinc ion allows a stabilizing effect. <ref name="doc1"/>
In this cavity, there is a zinc ion which is coordinated thanks to three histidine residues. These three histidine residues are <scene name='82/829353/H191/2'>H191</scene> in the helix II, <scene name='82/829353/H337/2'>H337</scene> and <scene name='82/829353/H341/2'>H341</scene> in the <scene name='82/829353/Helix7/2'>helix VII</scene>. As a result, the zinc ion is in the intracellular layer of the membrane, in the neighbourhood of 4° deep from the inner surface of the plasma membrane. Thanks to its tetrahedral coordination, this zinc ion binds the <scene name='82/829353/Helix2/2'>helix II</scene>, <scene name='82/829353/Helix3/2'>III</scene> and <scene name='82/829353/Helix7/2'>VII</scene> together. The adiponectin-stimulated AMPK phosphorylation doesn’t directly require the zinc binding site, nevertheless it has been supposed that the zinc ion allows a stabilizing effect. <ref name="doc1"/>

Revision as of 22:15, 16 January 2020

This Sandbox is Reserved from 25/11/2019, through 30/9/2020 for use in the course "Structural Biology" taught by Bruno Kieffer at the University of Strasbourg, ESBS. This reservation includes Sandbox Reserved 1091 through Sandbox Reserved 1115.
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The Adiponectin receptor 1

Adiponectin receptor 1 (AdipoR1) structure

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References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Tanabe, Hiroaki, Yoshifumi Fujii, Miki Okada-Iwabu, Masato Iwabu, Yoshihiro Nakamura, Toshiaki Hosaka, Kanna Motoyama, et al. « Crystal structures of the human adiponectin receptors ». Nature 520, nᵒ 7547 (1 avril 2015): 312‑16. https://doi.org/10.1038/nature14301
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Kadowaki, Takashi et al. “Adiponectin and adiponectin receptors in insulin resistance, diabetes, and the metabolic syndrome.” The Journal of clinical investigation vol. 116,7 (2006): 1784-92. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1483172/
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Whitehead, J. P., A. A. Richards, I. J. Hickman, G. A. Macdonald, et J. B. Prins. « Adiponectin – a Key Adipokine in the Metabolic Syndrome ». Diabetes, Obesity and Metabolism 8, nᵒ 3 (2006): 264‑80. https://doi.org/10.1111/j.1463-1326.2005.00510.x.
  4. ↑ 4.0 4.1 Yamauchi, Toshimasa, Junji Kamon, Yusuke Ito, Atsushi Tsuchida, Takehiko Yokomizo, Shunbun Kita, Takuya Sugiyama, et al. « Cloning of adiponectin receptors that mediate antidiabetic metabolic effects ». Nature 423, nᵒ 6941 (1 juin 2003): 762‑69. https://doi.org/10.1038/nature01705.
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 Takashi Kadowaki and Toshimasa Yamauchi et al. « Adiponectin and adiponectin receptors». 2015 https://www.ncbi.nlm.nih.gov/pubmed/15897298
  6. ↑ 6.0 6.1 6.2 Parker-Duffen JL, Nakamura K, Silver M, Zuriaga MA, MacLauchlan S, Aprahamian TR, Walsh K et al. «Divergent roles for adiponectin receptor 1 (AdipoR1) and AdipoR2 in mediating revascularization and metabolic dysfunction in vivo.» 17 April 2014 : https://www.ncbi.nlm.nih.gov/pubmed/24742672
  7. ↑ Kosel D, Heiker JT, Juhl C, Wottawah CM, Blüher M, Mörl K, Beck-Sickinger AG et al. « Dimerization of adiponectin 1 is inhibited by adiponectin » Journal of Cell Science 123, 1320-1328 (2010) : https://www.ncbi.nlm.nih.gov/pubmed/20332107
  8. ↑ Hanson, R. M., Prilusky, J., Renjian, Z., Nakane, T. and Sussman, J. L. (2013), JSmol and the Next-Generation Web-Based Representation of 3D Molecular Structure as Applied to Proteopedia. Isr. J. Chem., 53:207-216. doi:http://dx.doi.org/10.1002/ijch.201300024
  9. ↑ Herraez A. Biomolecules in the computer: Jmol to the rescue. Biochem Mol Biol Educ. 2006 Jul;34(4):255-61. doi: 10.1002/bmb.2006.494034042644. PMID:21638687 doi:10.1002/bmb.2006.494034042644
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