4ont

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Ternary host recognition complex of complement factor H, C3d, and sialic acidTernary host recognition complex of complement factor H, C3d, and sialic acid

Structural highlights

4ont is a 6 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:, , ,
Gene:CFH, HF, HF1, HF2 (HUMAN), C3, CPAMD1 (HUMAN)
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[CFAH_HUMAN] Genetic variations in CFH are associated with basal laminar drusen (BLD) [MIM:126700]; also known as drusen of Bruch membrane or cuticular drusen or grouped early adult-onset drusen. Drusen are extracellular deposits that accumulate below the retinal pigment epithelium on Bruch membrane. Basal laminar drusen refers to an early adult-onset drusen phenotype that shows a pattern of uniform small, slightly raised yellow subretinal nodules randomly scattered in the macula. In later stages, these drusen often become more numerous, with clustered groups of drusen scattered throughout the retina. In time these small basal laminar drusen may expand and ultimately lead to a serous pigment epithelial detachment of the macula that may result in vision loss. Defects in CFH are the cause of complement factor H deficiency (CFHD) [MIM:609814]. A disorder that can manifest as several different phenotypes, including asymptomatic, recurrent bacterial infections, and renal failure. Laboratory features usually include decreased serum levels of factor H, complement component C3, and a decrease in other terminal complement components, indicating activation of the alternative complement pathway. It is associated with a number of renal diseases with variable clinical presentation and progression, including membranoproliferative glomerulonephritis and atypical hemolytic uremic syndrome.[1] [2] [3] [4] [5] [6] [7] [8] Defects in CFH are a cause of susceptibility to hemolytic uremic syndrome atypical type 1 (AHUS1) [MIM:235400]. 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.[9] [10] [11] [12] [13] [14] [15] [16] Genetic variation in CFH is associated with age-related macular degeneration type 4 (ARMD4) [MIM:610698]. 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 (known as drusen) that lie beneath the retinal pigment epithelium and within an elastin-containing structure known as Bruch membrane.[17] [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.[18] [19] [20] [21] [22] [:] 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.[23] [24] 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.[25] [26] [27] 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.[28]

Function

[CFAH_HUMAN] Factor H functions as a cofactor in the inactivation of C3b by factor I and also increases the rate of dissociation of the C3bBb complex (C3 convertase) and the (C3b)NBB complex (C5 convertase) in the alternative complement pathway. [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.[29] [30] [31] [32] [33] [34] [35] [36] 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.[37] [38] [39] [40] [41] [42] [43] [44] 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.[45] [46] [47] [48] [49] [50] [51] [52]

Publication Abstract from PubMed

The serum protein complement factor H (FH) ensures downregulation of the complement alternative pathway, a branch of innate immunity, upon interaction with specific glycans on host cell surfaces. Using ligand-based NMR, we screened a comprehensive set of sialylated glycans for binding to FH and solved the crystal structure of a ternary complex formed by the two C-terminal domains of FH, a sialylated trisaccharide and the complement C3b thioester-containing domain. Key residues in the sialic acid binding site are conserved from mice to men, and residues linked to atypical hemolytic uremic syndrome cluster within this binding site, suggesting a possible role for sialic acid as a host marker also in other mammals and a critical role in human renal complement homeostasis. Unexpectedly, the FH sialic acid binding site is structurally homologous to the binding sites of two evolutionarily unrelated proteins. The crystal structure also advances our understanding of bacterial immune evasion strategies.

Structural basis for sialic acid-mediated self-recognition by complement factor H.,Blaum BS, Hannan JP, Herbert AP, Kavanagh D, Uhrin D, Stehle T Nat Chem Biol. 2014 Nov 24. doi: 10.1038/nchembio.1696. PMID:25402769[53]

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

See Also

References

  1. ↑ Ault BH, Schmidt BZ, Fowler NL, Kashtan CE, Ahmed AE, Vogt BA, Colten HR. Human factor H deficiency. Mutations in framework cysteine residues and block in H protein secretion and intracellular catabolism. J Biol Chem. 1997 Oct 3;272(40):25168-75. PMID:9312129
  2. ↑ Sanchez-Corral P, Bellavia D, Amico L, Brai M, Rodriguez de Cordoba S. Molecular basis for factor H and FHL-1 deficiency in an Italian family. Immunogenetics. 2000 Apr;51(4-5):366-9. PMID:10803850
  3. ↑ Perez-Caballero D, Gonzalez-Rubio C, Gallardo ME, Vera M, Lopez-Trascasa M, Rodriguez de Cordoba S, Sanchez-Corral P. Clustering of missense mutations in the C-terminal region of factor H in atypical hemolytic uremic syndrome. Am J Hum Genet. 2001 Feb;68(2):478-84. Epub 2001 Jan 17. PMID:11170895 doi:S0002-9297(07)64099-3
  4. ↑ Richards A, Buddles MR, Donne RL, Kaplan BS, Kirk E, Venning MC, Tielemans CL, Goodship JA, Goodship TH. Factor H mutations in hemolytic uremic syndrome cluster in exons 18-20, a domain important for host cell recognition. Am J Hum Genet. 2001 Feb;68(2):485-90. Epub 2001 Jan 17. PMID:11170896 doi:S0002-9297(07)64100-7
  5. ↑ Caprioli J, Bettinaglio P, Zipfel PF, Amadei B, Daina E, Gamba S, Skerka C, Marziliano N, Remuzzi G, Noris M. The molecular basis of familial hemolytic uremic syndrome: mutation analysis of factor H gene reveals a hot spot in short consensus repeat 20. J Am Soc Nephrol. 2001 Feb;12(2):297-307. PMID:11158219
  6. ↑ Remuzzi G, Ruggenenti P, Codazzi D, Noris M, Caprioli J, Locatelli G, Gridelli B. Combined kidney and liver transplantation for familial haemolytic uraemic syndrome. Lancet. 2002 May 11;359(9318):1671-2. PMID:12020532 doi:10.1016/S0140-6736(02)08560-4
  7. ↑ Dragon-Durey MA, Fremeaux-Bacchi V, Loirat C, Blouin J, Niaudet P, Deschenes G, Coppo P, Herman Fridman W, Weiss L. Heterozygous and homozygous factor h deficiencies associated with hemolytic uremic syndrome or membranoproliferative glomerulonephritis: report and genetic analysis of 16 cases. J Am Soc Nephrol. 2004 Mar;15(3):787-95. PMID:14978182
  8. ↑ Licht C, Heinen S, Jozsi M, Loschmann I, Saunders RE, Perkins SJ, Waldherr R, Skerka C, Kirschfink M, Hoppe B, Zipfel PF. Deletion of Lys224 in regulatory domain 4 of Factor H reveals a novel pathomechanism for dense deposit disease (MPGN II). Kidney Int. 2006 Jul;70(1):42-50. Epub 2006 Apr 12. PMID:16612335 doi:10.1038/sj.ki.5000269
  9. ↑ Dragon-Durey MA, Fremeaux-Bacchi V, Loirat C, Blouin J, Niaudet P, Deschenes G, Coppo P, Herman Fridman W, Weiss L. Heterozygous and homozygous factor h deficiencies associated with hemolytic uremic syndrome or membranoproliferative glomerulonephritis: report and genetic analysis of 16 cases. J Am Soc Nephrol. 2004 Mar;15(3):787-95. PMID:14978182
  10. ↑ Warwicker P, Goodship TH, Donne RL, Pirson Y, Nicholls A, Ward RM, Turnpenny P, Goodship JA. Genetic studies into inherited and sporadic hemolytic uremic syndrome. Kidney Int. 1998 Apr;53(4):836-44. PMID:9551389 doi:10.1111/j.1523-1755.1998.00824.x
  11. ↑ Ying L, Katz Y, Schlesinger M, Carmi R, Shalev H, Haider N, Beck G, Sheffield VC, Landau D. Complement factor H gene mutation associated with autosomal recessive atypical hemolytic uremic syndrome. Am J Hum Genet. 1999 Dec;65(6):1538-46. PMID:10577907 doi:S0002-9297(07)63573-3
  12. ↑ Buddles MR, Donne RL, Richards A, Goodship J, Goodship TH. Complement factor H gene mutation associated with autosomal recessive atypical hemolytic uremic syndrome. Am J Hum Genet. 2000 May;66(5):1721-2. PMID:10762557 doi:10.1086/302877
  13. ↑ Perkins SJ, Goodship TH. Molecular modelling of the C-terminal domains of factor H of human complement: a correlation between haemolytic uraemic syndrome and a predicted heparin binding site. J Mol Biol. 2002 Feb 15;316(2):217-24. PMID:11851332 doi:10.1006/jmbi.2001.5337
  14. ↑ Caprioli J, Castelletti F, Bucchioni S, Bettinaglio P, Bresin E, Pianetti G, Gamba S, Brioschi S, Daina E, Remuzzi G, Noris M. Complement factor H mutations and gene polymorphisms in haemolytic uraemic syndrome: the C-257T, the A2089G and the G2881T polymorphisms are strongly associated with the disease. Hum Mol Genet. 2003 Dec 15;12(24):3385-95. Epub 2003 Oct 28. PMID:14583443 doi:10.1093/hmg/ddg363
  15. ↑ Neumann HP, Salzmann M, Bohnert-Iwan B, Mannuelian T, Skerka C, Lenk D, Bender BU, Cybulla M, Riegler P, Konigsrainer A, Neyer U, Bock A, Widmer U, Male DA, Franke G, Zipfel PF. Haemolytic uraemic syndrome and mutations of the factor H gene: a registry-based study of German speaking countries. J Med Genet. 2003 Sep;40(9):676-81. PMID:12960213
  16. ↑ 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
  17. ↑ Raychaudhuri S, Iartchouk O, Chin K, Tan PL, Tai AK, Ripke S, Gowrisankar S, Vemuri S, Montgomery K, Yu Y, Reynolds R, Zack DJ, Campochiaro B, Campochiaro P, Katsanis N, Daly MJ, Seddon JM. A rare penetrant mutation in CFH confers high risk of age-related macular degeneration. Nat Genet. 2011 Oct 23;43(12):1232-6. doi: 10.1038/ng.976. PMID:22019782 doi:10.1038/ng.976
  18. ↑ 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
  19. ↑ 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
  20. ↑ 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
  21. ↑ 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
  22. ↑ 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
  23. ↑ 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
  24. ↑ 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
  25. ↑ 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
  26. ↑ 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
  27. ↑ 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
  28. ↑ 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
  29. ↑ 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
  30. ↑ 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
  31. ↑ 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
  32. ↑ 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
  33. ↑ 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
  34. ↑ 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
  35. ↑ 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
  36. ↑ 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
  37. ↑ 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
  38. ↑ 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
  39. ↑ 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
  40. ↑ 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
  41. ↑ 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
  42. ↑ 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
  43. ↑ 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
  44. ↑ 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
  45. ↑ 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
  46. ↑ 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
  47. ↑ 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
  48. ↑ 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
  49. ↑ 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
  50. ↑ 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
  51. ↑ 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
  52. ↑ 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
  53. ↑ Blaum BS, Hannan JP, Herbert AP, Kavanagh D, Uhrin D, Stehle T. Structural basis for sialic acid-mediated self-recognition by complement factor H. Nat Chem Biol. 2014 Nov 24. doi: 10.1038/nchembio.1696. PMID:25402769 doi:http://dx.doi.org/10.1038/nchembio.1696

4ont, resolution 2.15Å

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