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6QSW

Complement factor B protease domain in complex with the reversible inhibitor N-(2-bromo-4-methylnaphthalen-1-yl)-4,5-dihydro-1H-imidazol-2-amine.

This is a non-PDB format compatible entry.
Summary for 6QSW
Entry DOI10.2210/pdb6qsw/pdb
DescriptorComplement factor B, SULFATE ION, ~{N}-(2-bromanyl-4-methyl-naphthalen-1-yl)-4,5-dihydro-1~{H}-imidazol-2-amine, ... (4 entities in total)
Functional Keywordscomplement, immune, inhibitor, c3 convertase, hydrolase
Biological sourceHomo sapiens (Human)
Total number of polymer chains3
Total formula weight100740.83
Authors
Primary citationSchubart, A.,Anderson, K.,Mainolfi, N.,Sellner, H.,Ehara, T.,Adams, C.M.,Mac Sweeney, A.,Liao, S.M.,Crowley, M.,Littlewood-Evans, A.,Sarret, S.,Wieczorek, G.,Perrot, L.,Dubost, V.,Flandre, T.,Zhang, Y.,Smith, R.J.H.,Risitano, A.M.,Karki, R.G.,Zhang, C.,Valeur, E.,Sirockin, F.,Gerhartz, B.,Erbel, P.,Hughes, N.,Smith, T.M.,Cumin, F.,Argikar, U.A.,Haraldsson, B.,Mogi, M.,Sedrani, R.,Wiesmann, C.,Jaffee, B.,Maibaum, J.,Flohr, S.,Harrison, R.,Eder, J.
Small-molecule factor B inhibitor for the treatment of complement-mediated diseases.
Proc.Natl.Acad.Sci.USA, 116:7926-7931, 2019
Cited by
PubMed Abstract: Dysregulation of the alternative complement pathway (AP) predisposes individuals to a number of diseases including paroxysmal nocturnal hemoglobinuria, atypical hemolytic uremic syndrome, and C3 glomerulopathy. Moreover, glomerular Ig deposits can lead to complement-driven nephropathies. Here we describe the discovery of a highly potent, reversible, and selective small-molecule inhibitor of factor B, a serine protease that drives the central amplification loop of the AP. Oral administration of the inhibitor prevents KRN-induced arthritis in mice and is effective upon prophylactic and therapeutic dosing in an experimental model of membranous nephropathy in rats. In addition, inhibition of factor B prevents complement activation in sera from C3 glomerulopathy patients and the hemolysis of human PNH erythrocytes. These data demonstrate the potential therapeutic value of using a factor B inhibitor for systemic treatment of complement-mediated diseases and provide a basis for its clinical development.
PubMed: 30926668
DOI: 10.1073/pnas.1820892116
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (1.64 Å)
Structure validation

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