1ldr Citations

Three-dimensional structure of the second cysteine-rich repeat from the human low-density lipoprotein receptor.

Biochemistry 34 14474-81 (1995)
Cited: 50 times
EuropePMC logo PMID: 7578052

Abstract

The ligand-binding domain of the low-density lipoprotein receptor comprises seven cysteine-rich repeats, which have been highly conserved through evolution. This domain mediates interactions of the receptor with two lipoprotein apoproteins, apo E and apo B-100, putatively through a calcium-dependent association of the ligands with a cluster of acidic residues on the receptor. The second repeat (rLB2) of the receptor binding domain has been expressed as a thrombin-cleavable GST fusion protein, cleaved, and purified. On oxidation the protein refolded to give a single peak on reverse-phase HPLC. The aqueous solution structure of rLB2 has been determined using two-dimensional 1H NMR spectroscopy. In contrast to the amino-terminal repeat, rLB1, rLB2 has a very flexible structure in water. However, the conformation of rLB2 is markedly more ordered in the presence of a 4-fold molar excess of calcium chloride; the proton resonance dispersion and the number of NOESY cross-peaks are greatly enhanced. The three-dimensional structure of rLB2, obtained from the NMR data by molecular geometry and restrained molecular dynamics methods, parallels that of rLB1, with an amino-terminal hairpin structure followed by a succession of turns. However, there are clear differences in the backbone topology and structural flexibility. As for rLB1, the acidic residues are clustered on one face of the module. The side chain of Asp 37, which is part of a completely conserved SDE sequence thought to be involved in ligand binding, is buried, as is its counterpart (Asp 36) in rLB1. These results provide the first experimental support for the hypothesis that each of the repeats in the ligand-binding domain has a similar global fold but also highlight significant differences in structure and internal dynamics.

Articles - 1ldr mentioned but not cited (5)

  1. The cellular receptor to human rhinovirus 2 binds around the 5-fold axis and not in the canyon: a structural view. Hewat EA, Neumann E, Conway JF, Moser R, Ronacher B, Marlovits TC, Blaas D. EMBO J 19 6317-6325 (2000)
  2. Gentamicin binds to the megalin receptor as a competitive inhibitor using the common ligand binding motif of complement type repeats: insight from the nmr structure of the 10th complement type repeat domain alone and in complex with gentamicin. Dagil R, O'Shea C, Nykjær A, Bonvin AM, Kragelund BB. J Biol Chem 288 4424-4435 (2013)
  3. The relaxin receptor (RXFP1) utilizes hydrophobic moieties on a signaling surface of its N-terminal low density lipoprotein class A module to mediate receptor activation. Kong RC, Petrie EJ, Mohanty B, Ling J, Lee JC, Gooley PR, Bathgate RA. J Biol Chem 288 28138-28151 (2013)
  4. The dipeptidyl peptidase IV inhibitors vildagliptin and K-579 inhibit a phospholipase C: a case of promiscuous scaffolds in proteins. Chakraborty S, Rendón-Ramírez A, Ásgeirsson B, Dutta M, Ghosh AS, Oda M, Venkatramani R, Rao BJ, Dandekar AM, Goñi FM. F1000Res 2 286 (2013)
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Reviews citing this publication (7)

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Articles citing this publication (38)

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  15. Ligand-binding domains in vitellogenin receptors and other LDL-receptor family members share a common ancestral ordering of cysteine-rich repeats. Sappington TW, Raikhel AS. J Mol Evol 46 476-487 (1998)
  16. Scrambled isomers as key intermediates in the oxidative folding of ligand binding module 5 of the low density lipoprotein receptor. Arias-Moreno X, Arolas JL, Aviles FX, Sancho J, Ventura S. J Biol Chem 283 13627-13637 (2008)
  17. The structure, dynamics, and binding of the LA45 module pair of the low-density lipoprotein receptor suggest an important role for LA4 in ligand release. Guttman M, Komives EA. Biochemistry 50 11001-11008 (2011)
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  19. Solution structure of the viral receptor domain of Tva and its implications in viral entry. Wang QY, Huang W, Dolmer K, Gettins PG, Rong L. J Virol 76 2848-2856 (2002)
  20. Localization of basic residues required for receptor binding to the single alpha-helix of the receptor binding domain of human alpha2-macroglobulin. Huang W, Dolmer K, Liao X, Gettins PG. Protein Sci 7 2602-2612 (1998)
  21. Apolipoprotein E-low density lipoprotein receptor binding: study of protein-protein interaction in rationally selected docked complexes. Prévost M, Raussens V. Proteins 55 874-884 (2004)
  22. Role of calcium in protein folding and function of Tva, the receptor of subgroup A avian sarcoma and leukosis virus. Wang QY, Dolmer K, Huang W, Gettins PG, Rong L. J Virol 75 2051-2058 (2001)
  23. Thermodynamics of protein-cation interaction: Ca(+2) and Mg(+2) binding to the fifth binding module of the LDL receptor. Arias-Moreno X, Cuesta-Lopez S, Millet O, Sancho J, Velazquez-Campoy A. Proteins 78 950-961 (2010)
  24. Structural basis for ligand capture and release by the endocytic receptor ApoER2. Hirai H, Yasui N, Yamashita K, Tabata S, Yamamoto M, Takagi J, Nogi T. EMBO Rep 18 982-999 (2017)
  25. The human LGR7 low-density lipoprotein class A module requires calcium for structure. Hopkins EJ, Bathgate RA, Gooley PR. Ann N Y Acad Sci 1041 27-34 (2005)
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  32. Solution structure of the twelfth cysteine-rich ligand-binding repeat in rat megalin. Wolf CA, Dancea F, Shi M, Bade-Noskova V, Rüterjans H, Kerjaschki D, Lücke C. J Biomol NMR 37 321-328 (2007)
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  37. LBD1 of Vitellogenin Receptor Specifically Binds to the Female-Specific Storage Protein SP1 via LBR1 and LBR3. Liu L, Wang Y, Li Y, Lin Y, Hou Y, Zhang Y, Wei S, Zhao P, Zhao P, He H. PLoS One 11 e0162317 (2016)
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Related citations provided by authors (1)

  1. Three-Dimensional Structure of a Cysteine-Rich Repeat of the Low-Density Lipoprotein Receptor. Daly NL, Scanlon MJ, Djordjevic JT, Kroon PA, Smith R Proc. Natl. Acad. Sci. U.S.A. 92 6334- (1995)