Primary Citation PubMed: 16177781
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The structure of OMCI, a novel lipocalin inhibitor of the complement system.
(2007) J Mol Biol 369
PubMed: 17445829 | PubMedCentral: PMC2724154 | DOI: 10.1016/j.jmb.2007.03.064
C5 and C5:OmCI modelling A homology model for human C5 (1681 residues) was built with the program Modeller, 53 using the crystal structure of human C3 (1653 residues, PDB ID 2A73) as a template.
In surface representation, coloured blue, a homology model for the neighbouring surface of the C5 molecule (excluding the C345C domain) based on the structure of C3, PDB ID 2A73.
(c) A representation of the two chain structure of C5, modelled after the C3 crystal structure, PDB ID 2A73.
Publication Year: 2007
Structural and functional implications of the alternative complement pathway C3 convertase stabilized by a staphylococcal inhibitor.
(2009) Nat Immunol 10
PubMed: 19503103 | PubMedCentral: PMC2729104 | DOI: 10.1038/ni.1756
( b) Model of the enzyme-substrate (C3bBb-C3) complex constructed by superimposing C3 (pdb code: 2A73) 32 on the MG4−5 domains of the dimeric C3b molecule in the complex.
Publication Year: 2009
Conformational states of a bacterial ?2-macroglobulin resemble those of human complement C3.
(2012) PLoS One 7
PubMed: 22530012 | PubMedCentral: PMC3328433 | DOI: 10.1371/journal.pone.0035384
Image processing A SPIDER  -based projection matching analysis using an initial 3D model calculated from the related C3 structure (PDB 2A73 filtered at 30 Å) was performed.
In total, 51,700 individual particles were selected and aligned against the re-projections of a 30 Å-filtered model of C3 (PDB coordinates 2A73).
Structures of C3 (PDB 2A73) and C3b (PDB 2I07, in blue) were modeled manually into the ECAM ab initio SAXS models.
Publication Year: 2012
Zinc-induced self-association of complement C3b and Factor H: implications for inflammation and age-related macular degeneration.
(2013) J Biol Chem 288
PubMed: 23661701 | PubMedCentral: PMC3696691 | DOI: 10.1074/jbc.M113.476143
Name PDB code Number of C3 domains Number of residues in the PDB file Unique zinc binding residues predicted METSITE >0.7 Number of unique zinc binding residues per 100 residues C3 2A73 13 161... 38 2.4 C3b 2ICF 12 1545 45 2.9 C3b 2I07 12 1531 27 1.8 C3u 3MMQ 13 1531 28 1.8 C3c 2A74 10 1109 17 1.5 C3d 1C3D 1 294 3 1.0 C3d 1GHQ 1 307 4 1.3 The front and back surfaces of the five C3 proteins showed that the partial zinc binding site predictions were broadly distributed ( Fig. 8 ).
The predictions used crystal structures for C3 (PDB code 2A73 ) ( 4 ), C3b (PDB codes 2I07 and 2ICF ) ( 51 , 52 ), C3c (PDB code 2A74 ) ( 4 ), and C3d (PDB codes 1C3D and 1GHQ ( 53 , 54 ), and a solution structure for C3u (PDB code 3MMQ ) ( 43 ).
The PDB codes are 2A73 for C3 ( A ), 3MMQ for C3u ( B ), 2I07 for C3b ( C ), 2A74 for C3c and 1C3D for C3d ( D ).
Publication Year: 2013
Atypical hemolytic uremic syndrome.
(2013) Semin Nephrol 33
PubMed: 24161037 | PubMedCentral: PMC3863953 | DOI: 10.1016/j.semnephrol.2013.08.003
Figure 5 Location of aHUS-associated mutations within the crystal structure of C3 (protein database identification code: 2A73).
New functional and structural insights from updated mutational databases for complement factor H, Factor I, membrane cofactor protein and C3.
(2014) Biosci Rep 34
PubMed: 25188723 | PubMedCentral: PMC4206863 | DOI: 10.1042/BSR20140117
The structure of the 13 domains in C3 was taken from its crystal structure (PDB code 2A73) [ 21 ].
Publication Year: 2014
A revised mechanism for the activation of complement C3 to C3b: a molecular explanation of a disease-associated polymorphism.
(2015) J Biol Chem 290
PubMed: 25488663 | PubMedCentral: PMC4303685 | DOI: 10.1074/jbc.M114.605691
Scattering and Sedimentation Modeling of C3, C3u, C3b, C3c, and C3d The scattering modeling of human C3, C3c, and C3d utilized their crystal structures (Protein Data Bank codes 2A73 , 2A74 , and 1C3D ... respectively).
Publication Year: 2015
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