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<StructureSection load='1w2s' size='340' side='right'caption='[[1w2s]]' scene=''>
<StructureSection load='1w2s' size='340' side='right'caption='[[1w2s]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1w2s]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W2S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1W2S FirstGlance]. <br>
<table><tr><td colspan='2'>[[1w2s]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W2S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1W2S FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1c3d|1c3d]], [[1ghq|1ghq]], [[1ly2|1ly2]]</div></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray solution scattering</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1w2s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w2s OCA], [https://pdbe.org/1w2s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1w2s RCSB], [https://www.ebi.ac.uk/pdbsum/1w2s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1w2s ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1w2s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w2s OCA], [https://pdbe.org/1w2s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1w2s RCSB], [https://www.ebi.ac.uk/pdbsum/1w2s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1w2s ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/CO3_HUMAN CO3_HUMAN] Defects in C3 are the cause of complement component 3 deficiency (C3D) [MIM:[https://omim.org/entry/613779 613779]. A rare defect of the complement classical pathway. Patients develop recurrent, severe, pyogenic infections because of ineffective opsonization of pathogens. Some patients may also develop autoimmune disorders, such as arthralgia and vasculitic rashes, lupus-like syndrome and membranoproliferative glomerulonephritis.<ref>PMID:19913840</ref> <ref>PMID:9596584</ref> <ref>PMID:11387479</ref> <ref>PMID:15713468</ref> <ref>PMID:7961791</ref> [:]  Genetic variation in C3 is associated with susceptibility to age-related macular degeneration type 9 (ARMD9) [MIM:[https://omim.org/entry/611378 611378]. ARMD is a multifactorial eye disease and the most common cause of irreversible vision loss in the developed world. In most patients, the disease is manifest as ophthalmoscopically visible yellowish accumulations of protein and lipid that lie beneath the retinal pigment epithelium and within an elastin-containing structure known as Bruch membrane.<ref>PMID:19913840</ref> <ref>PMID:17634448</ref>  Defects in C3 are a cause of susceptibility to hemolytic uremic syndrome atypical type 5 (AHUS5) [MIM:[https://omim.org/entry/612925 612925]. An atypical form of hemolytic uremic syndrome. It is a complex genetic disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, renal failure and absence of episodes of enterocolitis and diarrhea. In contrast to typical hemolytic uremic syndrome, atypical forms have a poorer prognosis, with higher death rates and frequent progression to end-stage renal disease. Note=Susceptibility to the development of atypical hemolytic uremic syndrome can be conferred by mutations in various components of or regulatory factors in the complement cascade system. Other genes may play a role in modifying the phenotype.<ref>PMID:19913840</ref> <ref>PMID:18796626</ref> <ref>PMID:20513133</ref>  Note=Increased levels of C3 and its cleavage product ASP, are associated with obesity, diabetes and coronary heart disease. Short-term endurance training reduces baseline ASP levels and subsequently fat storage.<ref>PMID:19913840</ref>
== Function ==
[https://www.uniprot.org/uniprot/CO3_HUMAN CO3_HUMAN] C3 plays a central role in the activation of the complement system. Its processing by C3 convertase is the central reaction in both classical and alternative complement pathways. After activation C3b can bind covalently, via its reactive thioester, to cell surface carbohydrates or immune aggregates.<ref>PMID:8376604</ref> <ref>PMID:2909530</ref> <ref>PMID:9059512</ref> <ref>PMID:9555951</ref> <ref>PMID:10432298</ref> <ref>PMID:15833747</ref> <ref>PMID:16333141</ref> <ref>PMID:19615750</ref>  Derived from proteolytic degradation of complement C3, C3a anaphylatoxin is a mediator of local inflammatory process. It induces the contraction of smooth muscle, increases vascular permeability and causes histamine release from mast cells and basophilic leukocytes.<ref>PMID:8376604</ref> <ref>PMID:2909530</ref> <ref>PMID:9059512</ref> <ref>PMID:9555951</ref> <ref>PMID:10432298</ref> <ref>PMID:15833747</ref> <ref>PMID:16333141</ref> <ref>PMID:19615750</ref>  Acylation stimulating protein (ASP): adipogenic hormone that stimulates triglyceride (TG) synthesis and glucose transport in adipocytes, regulating fat storage and playing a role in postprandial TG clearance. Appears to stimulate TG synthesis via activation of the PLC, MAPK and AKT signaling pathways. Ligand for GPR77. Promotes the phosphorylation, ARRB2-mediated internalization and recycling of GPR77.<ref>PMID:8376604</ref> <ref>PMID:2909530</ref> <ref>PMID:9059512</ref> <ref>PMID:9555951</ref> <ref>PMID:10432298</ref> <ref>PMID:15833747</ref> <ref>PMID:16333141</ref> <ref>PMID:19615750</ref>
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Gilbert, H E]]
[[Category: Gilbert HE]]
[[Category: Hannan, J P]]
[[Category: Hannan JP]]
[[Category: Holers, V M]]
[[Category: Holers VM]]
[[Category: Perkins, S J]]
[[Category: Perkins SJ]]
[[Category: Analytical ultracentrifugation]]
[[Category: Complement]]
[[Category: Constrained modelling]]
[[Category: Glycoprotein]]
[[Category: Immune system]]
[[Category: Immunology]]
[[Category: Thrombospondin type i repeat]]
[[Category: X-ray scattering]]

Latest revision as of 12:09, 9 May 2024

Solution structure of CR2 SCR 1-2 in its complex with C3d by X-ray scatteringSolution structure of CR2 SCR 1-2 in its complex with C3d by X-ray scattering

Structural highlights

1w2s is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray solution scattering
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

CO3_HUMAN Defects in C3 are the cause of complement component 3 deficiency (C3D) [MIM:613779. A rare defect of the complement classical pathway. Patients develop recurrent, severe, pyogenic infections because of ineffective opsonization of pathogens. Some patients may also develop autoimmune disorders, such as arthralgia and vasculitic rashes, lupus-like syndrome and membranoproliferative glomerulonephritis.[1] [2] [3] [4] [5] [:] Genetic variation in C3 is associated with susceptibility to age-related macular degeneration type 9 (ARMD9) [MIM:611378. ARMD is a multifactorial eye disease and the most common cause of irreversible vision loss in the developed world. In most patients, the disease is manifest as ophthalmoscopically visible yellowish accumulations of protein and lipid that lie beneath the retinal pigment epithelium and within an elastin-containing structure known as Bruch membrane.[6] [7] Defects in C3 are a cause of susceptibility to hemolytic uremic syndrome atypical type 5 (AHUS5) [MIM:612925. An atypical form of hemolytic uremic syndrome. It is a complex genetic disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, renal failure and absence of episodes of enterocolitis and diarrhea. In contrast to typical hemolytic uremic syndrome, atypical forms have a poorer prognosis, with higher death rates and frequent progression to end-stage renal disease. Note=Susceptibility to the development of atypical hemolytic uremic syndrome can be conferred by mutations in various components of or regulatory factors in the complement cascade system. Other genes may play a role in modifying the phenotype.[8] [9] [10] Note=Increased levels of C3 and its cleavage product ASP, are associated with obesity, diabetes and coronary heart disease. Short-term endurance training reduces baseline ASP levels and subsequently fat storage.[11]

Function

CO3_HUMAN C3 plays a central role in the activation of the complement system. Its processing by C3 convertase is the central reaction in both classical and alternative complement pathways. After activation C3b can bind covalently, via its reactive thioester, to cell surface carbohydrates or immune aggregates.[12] [13] [14] [15] [16] [17] [18] [19] Derived from proteolytic degradation of complement C3, C3a anaphylatoxin is a mediator of local inflammatory process. It induces the contraction of smooth muscle, increases vascular permeability and causes histamine release from mast cells and basophilic leukocytes.[20] [21] [22] [23] [24] [25] [26] [27] Acylation stimulating protein (ASP): adipogenic hormone that stimulates triglyceride (TG) synthesis and glucose transport in adipocytes, regulating fat storage and playing a role in postprandial TG clearance. Appears to stimulate TG synthesis via activation of the PLC, MAPK and AKT signaling pathways. Ligand for GPR77. Promotes the phosphorylation, ARRB2-mediated internalization and recycling of GPR77.[28] [29] [30] [31] [32] [33] [34] [35]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Complement receptor type 2 (CR2, CD21) forms a tight complex with C3d, a fragment of C3, the major complement component. Previous crystal structures of the C3d-CR2 SCR 1-2 complex and free CR2 SCR 1-2 showed that the two SCR domains of CR2 form contact with each other in a closed V-shaped structure. SCR 1 and SCR 2 are connected by an unusually long eight-residue linker peptide. Medium-resolution solution structures for CR2 SCR 1-2, C3d, and their complex were determined by X-ray scattering and analytical ultracentrifugation. CR2 SCR 1-2 is monomeric. For CR2 SCR 1-2, its radius of gyration R(G) of 2.12(+/-0.05) nm, its maximum length of 10nm and its sedimentation coefficient s20,w(o) of 1.40(+/-0.03) S do not agree with those calculated from the crystal structures, and instead suggest an open structure. Computer modelling of the CR2 SCR1-2 solution structure was based on the structural randomisation of the eight-residue linker peptide joining SCR 1 and SCR 2 to give 9950 trial models. Comparisons with the X-ray scattering curve indicated that the most favoured arrangements for the two SCR domains corresponded to an open V-shaped structure with no contacts between the SCR domains. For C3d, X-ray scattering and sedimentation velocity experiments showed that it exists as a monomer-dimer equilibrium with a dissociation constant of 40 microM. The X-ray scattering curve for monomeric C3d gave an R(G) value of 1.95 nm, and this together with its s20,w(o) value of 3.17 S gave good agreement with the monomeric C3d crystal structure. Modelling of the C3d dimer gave good agreements with its scattering and ultracentrifugation parameters. For the complex, scattering and ultracentrifugation experiments showed that there was no dimerisation, indicating that the C3d dimerisation site was located close to the CR2 SCR 1-2 binding site. The R(G) value of 2.44(+/-0.1) nm, its length of 9 nm and its s20,w(o) value of 3.45(+/-0.01) S showed that its structure was not much more elongated than that of C3d. Calculations with 9950 models of CR2 SCR 1-2 bound to C3d through SCR 2 showed that SCR 1 formed an open V-shaped structure with SCR 2 and was capable of interacting with the surface of C3d. We conclude that the open V-shaped structures formed by CR2 SCR 1-2, both when free and when bound to C3d, are optimal for the formation of a tight two-domain interaction with its ligand C3d.

Solution structure of the complex between CR2 SCR 1-2 and C3d of human complement: an X-ray scattering and sedimentation modelling study.,Gilbert HE, Eaton JT, Hannan JP, Holers VM, Perkins SJ J Mol Biol. 2005 Feb 25;346(3):859-73. Epub 2005 Jan 12. PMID:15713468[36]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Onat A, Hergenc G, Can G, Kaya Z, Yuksel H. Serum complement C3: a determinant of cardiometabolic risk, additive to the metabolic syndrome, in middle-aged population. Metabolism. 2010 May;59(5):628-34. doi: 10.1016/j.metabol.2009.09.006. Epub 2009 , Nov 14. PMID:19913840 doi:10.1016/j.metabol.2009.09.006
  2. ↑ Nagar B, Jones RG, Diefenbach RJ, Isenman DE, Rini JM. X-ray crystal structure of C3d: a C3 fragment and ligand for complement receptor 2. Science. 1998 May 22;280(5367):1277-81. PMID:9596584
  3. ↑ Szakonyi G, Guthridge JM, Li D, Young K, Holers VM, Chen XS. Structure of complement receptor 2 in complex with its C3d ligand. Science. 2001 Jun 1;292(5522):1725-8. PMID:11387479 doi:10.1126/science.1059118
  4. ↑ Gilbert HE, Eaton JT, Hannan JP, Holers VM, Perkins SJ. Solution structure of the complex between CR2 SCR 1-2 and C3d of human complement: an X-ray scattering and sedimentation modelling study. J Mol Biol. 2005 Feb 25;346(3):859-73. Epub 2005 Jan 12. PMID:15713468 doi:10.1016/j.jmb.2004.12.006
  5. ↑ Singer L, Whitehead WT, Akama H, Katz Y, Fishelson Z, Wetsel RA. Inherited human complement C3 deficiency. An amino acid substitution in the beta-chain (ASP549 to ASN) impairs C3 secretion. J Biol Chem. 1994 Nov 11;269(45):28494-9. PMID:7961791
  6. ↑ Onat A, Hergenc G, Can G, Kaya Z, Yuksel H. Serum complement C3: a determinant of cardiometabolic risk, additive to the metabolic syndrome, in middle-aged population. Metabolism. 2010 May;59(5):628-34. doi: 10.1016/j.metabol.2009.09.006. Epub 2009 , Nov 14. PMID:19913840 doi:10.1016/j.metabol.2009.09.006
  7. ↑ Yates JR, Sepp T, Matharu BK, Khan JC, Thurlby DA, Shahid H, Clayton DG, Hayward C, Morgan J, Wright AF, Armbrecht AM, Dhillon B, Deary IJ, Redmond E, Bird AC, Moore AT. Complement C3 variant and the risk of age-related macular degeneration. N Engl J Med. 2007 Aug 9;357(6):553-61. Epub 2007 Jul 18. PMID:17634448 doi:NEJMoa072618
  8. ↑ Onat A, Hergenc G, Can G, Kaya Z, Yuksel H. Serum complement C3: a determinant of cardiometabolic risk, additive to the metabolic syndrome, in middle-aged population. Metabolism. 2010 May;59(5):628-34. doi: 10.1016/j.metabol.2009.09.006. Epub 2009 , Nov 14. PMID:19913840 doi:10.1016/j.metabol.2009.09.006
  9. ↑ Fremeaux-Bacchi V, Miller EC, Liszewski MK, Strain L, Blouin J, Brown AL, Moghal N, Kaplan BS, Weiss RA, Lhotta K, Kapur G, Mattoo T, Nivet H, Wong W, Gie S, Hurault de Ligny B, Fischbach M, Gupta R, Hauhart R, Meunier V, Loirat C, Dragon-Durey MA, Fridman WH, Janssen BJ, Goodship TH, Atkinson JP. Mutations in complement C3 predispose to development of atypical hemolytic uremic syndrome. Blood. 2008 Dec 15;112(13):4948-52. doi: 10.1182/blood-2008-01-133702. Epub 2008 , Sep 16. PMID:18796626 doi:10.1182/blood-2008-01-133702
  10. ↑ Maga TK, Nishimura CJ, Weaver AE, Frees KL, Smith RJ. Mutations in alternative pathway complement proteins in American patients with atypical hemolytic uremic syndrome. Hum Mutat. 2010 Jun;31(6):E1445-60. doi: 10.1002/humu.21256. PMID:20513133 doi:10.1002/humu.21256
  11. ↑ Onat A, Hergenc G, Can G, Kaya Z, Yuksel H. Serum complement C3: a determinant of cardiometabolic risk, additive to the metabolic syndrome, in middle-aged population. Metabolism. 2010 May;59(5):628-34. doi: 10.1016/j.metabol.2009.09.006. Epub 2009 , Nov 14. PMID:19913840 doi:10.1016/j.metabol.2009.09.006
  12. ↑ Baldo A, Sniderman AD, St-Luce S, Avramoglu RK, Maslowska M, Hoang B, Monge JC, Bell A, Mulay S, Cianflone K. The adipsin-acylation stimulating protein system and regulation of intracellular triglyceride synthesis. J Clin Invest. 1993 Sep;92(3):1543-7. PMID:8376604 doi:http://dx.doi.org/10.1172/JCI116733
  13. ↑ Cianflone KM, Sniderman AD, Walsh MJ, Vu HT, Gagnon J, Rodriguez MA. Purification and characterization of acylation stimulating protein. J Biol Chem. 1989 Jan 5;264(1):426-30. PMID:2909530
  14. ↑ Tao Y, Cianflone K, Sniderman AD, Colby-Germinario SP, Germinario RJ. Acylation-stimulating protein (ASP) regulates glucose transport in the rat L6 muscle cell line. Biochim Biophys Acta. 1997 Feb 18;1344(3):221-9. PMID:9059512
  15. ↑ Saleh J, Summers LK, Cianflone K, Fielding BA, Sniderman AD, Frayn KN. Coordinated release of acylation stimulating protein (ASP) and triacylglycerol clearance by human adipose tissue in vivo in the postprandial period. J Lipid Res. 1998 Apr;39(4):884-91. PMID:9555951
  16. ↑ Murray I, Kohl J, Cianflone K. Acylation-stimulating protein (ASP): structure-function determinants of cell surface binding and triacylglycerol synthetic activity. Biochem J. 1999 Aug 15;342 ( Pt 1):41-8. PMID:10432298
  17. ↑ Kalant D, MacLaren R, Cui W, Samanta R, Monk PN, Laporte SA, Cianflone K. C5L2 is a functional receptor for acylation-stimulating protein. J Biol Chem. 2005 Jun 24;280(25):23936-44. Epub 2005 Apr 14. PMID:15833747 doi:10.1074/jbc.M406921200
  18. ↑ Maslowska M, Legakis H, Assadi F, Cianflone K. Targeting the signaling pathway of acylation stimulating protein. J Lipid Res. 2006 Mar;47(3):643-52. Epub 2005 Dec 6. PMID:16333141 doi:10.1194/jlr.M500500-JLR200
  19. ↑ Cui W, Simaan M, Laporte S, Lodge R, Cianflone K. C5a- and ASP-mediated C5L2 activation, endocytosis and recycling are lost in S323I-C5L2 mutation. Mol Immunol. 2009 Sep;46(15):3086-98. Epub 2009 Jul 16. PMID:19615750 doi:S0161-5890(09)00421-0
  20. ↑ Baldo A, Sniderman AD, St-Luce S, Avramoglu RK, Maslowska M, Hoang B, Monge JC, Bell A, Mulay S, Cianflone K. The adipsin-acylation stimulating protein system and regulation of intracellular triglyceride synthesis. J Clin Invest. 1993 Sep;92(3):1543-7. PMID:8376604 doi:http://dx.doi.org/10.1172/JCI116733
  21. ↑ Cianflone KM, Sniderman AD, Walsh MJ, Vu HT, Gagnon J, Rodriguez MA. Purification and characterization of acylation stimulating protein. J Biol Chem. 1989 Jan 5;264(1):426-30. PMID:2909530
  22. ↑ Tao Y, Cianflone K, Sniderman AD, Colby-Germinario SP, Germinario RJ. Acylation-stimulating protein (ASP) regulates glucose transport in the rat L6 muscle cell line. Biochim Biophys Acta. 1997 Feb 18;1344(3):221-9. PMID:9059512
  23. ↑ Saleh J, Summers LK, Cianflone K, Fielding BA, Sniderman AD, Frayn KN. Coordinated release of acylation stimulating protein (ASP) and triacylglycerol clearance by human adipose tissue in vivo in the postprandial period. J Lipid Res. 1998 Apr;39(4):884-91. PMID:9555951
  24. ↑ Murray I, Kohl J, Cianflone K. Acylation-stimulating protein (ASP): structure-function determinants of cell surface binding and triacylglycerol synthetic activity. Biochem J. 1999 Aug 15;342 ( Pt 1):41-8. PMID:10432298
  25. ↑ Kalant D, MacLaren R, Cui W, Samanta R, Monk PN, Laporte SA, Cianflone K. C5L2 is a functional receptor for acylation-stimulating protein. J Biol Chem. 2005 Jun 24;280(25):23936-44. Epub 2005 Apr 14. PMID:15833747 doi:10.1074/jbc.M406921200
  26. ↑ Maslowska M, Legakis H, Assadi F, Cianflone K. Targeting the signaling pathway of acylation stimulating protein. J Lipid Res. 2006 Mar;47(3):643-52. Epub 2005 Dec 6. PMID:16333141 doi:10.1194/jlr.M500500-JLR200
  27. ↑ Cui W, Simaan M, Laporte S, Lodge R, Cianflone K. C5a- and ASP-mediated C5L2 activation, endocytosis and recycling are lost in S323I-C5L2 mutation. Mol Immunol. 2009 Sep;46(15):3086-98. Epub 2009 Jul 16. PMID:19615750 doi:S0161-5890(09)00421-0
  28. ↑ Baldo A, Sniderman AD, St-Luce S, Avramoglu RK, Maslowska M, Hoang B, Monge JC, Bell A, Mulay S, Cianflone K. The adipsin-acylation stimulating protein system and regulation of intracellular triglyceride synthesis. J Clin Invest. 1993 Sep;92(3):1543-7. PMID:8376604 doi:http://dx.doi.org/10.1172/JCI116733
  29. ↑ Cianflone KM, Sniderman AD, Walsh MJ, Vu HT, Gagnon J, Rodriguez MA. Purification and characterization of acylation stimulating protein. J Biol Chem. 1989 Jan 5;264(1):426-30. PMID:2909530
  30. ↑ Tao Y, Cianflone K, Sniderman AD, Colby-Germinario SP, Germinario RJ. Acylation-stimulating protein (ASP) regulates glucose transport in the rat L6 muscle cell line. Biochim Biophys Acta. 1997 Feb 18;1344(3):221-9. PMID:9059512
  31. ↑ Saleh J, Summers LK, Cianflone K, Fielding BA, Sniderman AD, Frayn KN. Coordinated release of acylation stimulating protein (ASP) and triacylglycerol clearance by human adipose tissue in vivo in the postprandial period. J Lipid Res. 1998 Apr;39(4):884-91. PMID:9555951
  32. ↑ Murray I, Kohl J, Cianflone K. Acylation-stimulating protein (ASP): structure-function determinants of cell surface binding and triacylglycerol synthetic activity. Biochem J. 1999 Aug 15;342 ( Pt 1):41-8. PMID:10432298
  33. ↑ Kalant D, MacLaren R, Cui W, Samanta R, Monk PN, Laporte SA, Cianflone K. C5L2 is a functional receptor for acylation-stimulating protein. J Biol Chem. 2005 Jun 24;280(25):23936-44. Epub 2005 Apr 14. PMID:15833747 doi:10.1074/jbc.M406921200
  34. ↑ Maslowska M, Legakis H, Assadi F, Cianflone K. Targeting the signaling pathway of acylation stimulating protein. J Lipid Res. 2006 Mar;47(3):643-52. Epub 2005 Dec 6. PMID:16333141 doi:10.1194/jlr.M500500-JLR200
  35. ↑ Cui W, Simaan M, Laporte S, Lodge R, Cianflone K. C5a- and ASP-mediated C5L2 activation, endocytosis and recycling are lost in S323I-C5L2 mutation. Mol Immunol. 2009 Sep;46(15):3086-98. Epub 2009 Jul 16. PMID:19615750 doi:S0161-5890(09)00421-0
  36. ↑ Gilbert HE, Eaton JT, Hannan JP, Holers VM, Perkins SJ. Solution structure of the complex between CR2 SCR 1-2 and C3d of human complement: an X-ray scattering and sedimentation modelling study. J Mol Biol. 2005 Feb 25;346(3):859-73. Epub 2005 Jan 12. PMID:15713468 doi:10.1016/j.jmb.2004.12.006
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