Uniprot accession / id : (P0C0L4)
 
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Entry Information
Entry status  (1)
REL
(8)
 
Experimental methods  (2)
X-ray diffraction
(5)
Electron Microscopy
(3)
 
Authors  (31)
Andersen GR
(4)
Croll TI
(3)
De la O Becerra KI
(3)
Gros P
(3)
Lorent JH
(3)
Oosterheert W
(3)
Rooijakkers SHM
(3)
Ruyken M
(3)
Schouten A
(3)
Xenaki KT
(3)
van Bergen En Henegouwen PMP
(3)
van den Bos RM
(3)
Carroll MC
(1)
Clemenza L
(1)
Fox R
(1)
Hansen A
(1)
Isenman DE
(1)
Johnson MB
(1)
Laursen NS
(1)
Martin A
(1)
Olesen HG
(1)
Presumey J
(1)
Rose DR
(1)
Simoni L
(1)
Stevens B
(1)
Thiel S
(1)
Wong V
(1)
Yalcin E
(1)
Zarantonello A
(1)
van den Elsen JM
(1)
van den Elsen JMH
(1)
 
Homo / hetero assembly  (2)
hetero
(7)
homo
(1)
 
Assembly composition  (2)
protein/protein complex
(7)
protein structure
(1)
 
Assembly polymer count  (4)
tetramer
(4)
trimer
(2)
monomer
(1)
pentamer
(1)
 
Resolution distribution
2.0 - 2.5
(1)
3.0 - 3.5
(4)
3.5 - 4
(3)
 
Release year distribution
2000 - 2005
(1)
2015 - 2020
(4)
2020 - 2025
(4)
 
Journal  (3)
J Immunol
(4)
Acta Crystallogr D Struct Biol
(3)
J Mol Biol
(1)
 
Macromolecules
Organism superkingdom  (1)
Eukaryota
(8)
 
Organism name  (1)
Homo sapiens
(8)
 
Molecule name  (21)
Acidic complement C4
(8)
C3 and PZP-like alpha-2-macroglobulin domain-containing protein 2
(8)
C4a anaphylatoxin
(8)
C4b-A
(8)
C4d-A
(8)
Complement C4 beta chain
(8)
Complement C4 gamma chain
(8)
Complement C4-A
(8)
Complement C4-A alpha chain
(8)
Basic complement C4
(1)
C3 and PZP-like alpha-2-macroglobulin domain-containing protein 3
(1)
C4b-B
(1)
C4d-B
(1)
Complement C4-B
(1)
Complement C4-B alpha chain
(1)
MASP-2
(1)
MBL-associated serine protease 2
(1)
Mannan-binding lectin serine protease 2
(1)
Mannan-binding lectin serine protease 2 A chain
(1)
Mannan-binding lectin serine protease 2 B chain
(1)
Mannose-binding protein-associated serine protease 2
(1)
 
Molecule type  (1)
Protein
(8)
 
Gene names  (7)
C4A
(8)
CO4
(8)
CPAMD2
(8)
C4B
(1)
C4B_2
(1)
CPAMD3
(1)
MASP2
(1)
 
Interacting Molecules  (10)
Complement C4 beta chain
(7)
Complement C4 gamma chain
(7)
Complement C4-A alpha chain
(5)
C4b-A
(2)
Anti-C4b nanobody B12
(1)
Anti-C4b nanobody E3
(1)
Mannan-binding lectin serine protease 2 A chain
(1)
Mannan-binding lectin serine protease 2 B chain
(1)
Nanobody B5
(1)
hC4Nb8 nanobody
(1)
 
Interacting ligands  (5)
NAG : 2-acetamido-2-deoxy-beta-D-glucopyranose
(7)
BMA : beta-D-mannopyranose
(3)
A2G : 2-acetamido-2-deoxy-alpha-D-galactopyranose
(1)
MAN : alpha-D-mannopyranose
(1)
PBM : TRIMETHYL LEAD ION
(1)
 
Function and Biology
EC number / name  (2)
3.4.21.104 : Mannan-binding lectin-associated serine protease-2
(1)
3.4.21.43 : Classical-complement-pathway C3/C5 convertase
(1)
 
Biological function  (2)
endopeptidase inhibitor activity
(7)
serine-type endopeptidase activity
(1)
 
Biological process  (3)
complement activation
(5)
inflammatory response
(5)
proteolysis
(1)
 
Biological cell component  (2)
extracellular space
(8)
extracellular region
(7)
 
Sequence and Structure classification
SCOP fold  (1)
alpha/alpha toroid
(1)
 
SCOP family  (1)
Complement components
(1)
 
CATH class  (3)
Mainly Alpha
(4)
Mainly Beta
(3)
Special
(3)
 
CATH topology  (9)
Glycosyltransferase
(4)
Immunoglobulin-like
(3)
Jelly Rolls
(3)
N-terminal domain of TfIIb
(3)
S-adenosyl-L-methionine-dependent methyltransferases
(3)
Influenza Virus Matrix Protein; Chain A, domain 1
(2)
OB fold (Dihydrolipoamide Acetyltransferase, E2P)
(2)
Complement Module; domain 1
(1)
Thrombin, subunit H
(1)
 
Pfam accession / name  (13)
PF07678 : TED_complement
(8)
PF00207 : A2M
(7)
PF01759 : NTR
(7)
PF01835 : MG2
(7)
PF07677 : A2M_recep
(7)
PF07703 : A2M_BRD
(7)
PF17789 : MG4
(7)
PF17791 : MG3
(7)
PF21145 : C4_MG1
(7)
PF22661 : CO4A-B_CUB_C
(7)
PF01821 : ANATO
(5)
PF00084 : Sushi
(1)
PF00089 : Trypsin
(1)
 
Experimental Information
Diffraction protocol  (1)
Single wavelength
(5)
 
Diffraction radiation source type  (2)
Synchrotron
(4)
Rotating anode
(1)
 
Diffraction source  (5)
ESRF BEAMLINE ID29
(2)
SOLEIL BEAMLINE PROXIMA 1
(2)
ESRF BEAMLINE ID23-1
(1)
PETRA III, EMBL c/o DESY BEAMLINE P13 (MX1)
(1)
RIGAKU RU200
(1)
 
Synchrotron site  (3)
ESRF
(3)
SOLEIL
(2)
PETRA III, EMBL c/o DESY
(1)
 
Diffraction detector type  (3)
Pixel
(4)
CCD
(2)
Image plate
(1)
 
Refinement software  (2)
PHENIX
(7)
CNS
(1)
 
EM microscope model  (1)
FEI TALOS ARCTICA
(3)
 
EM detector name  (1)
GATAN K2 SUMMIT (4k x 4k)
(3)
 
Representative Structures
Representative Structures
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Entries 1 to 8 of 8
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Structure of the complex of human complement C4 with MASP-2 rebuilt using iMDFF
Croll TI, Andersen GR
Acta Crystallogr D Struct Biol (2016) [PMID: 27599733  ]
Source organism: Homo sapiens  
Assembly composition: protein/protein complex
Modified residues: TYS    TYS   
Carbohydrate polymer components:
Molecule 1 - BMA(1), NAG(2)
Assembly name: C4d-A and Mannan-binding lectin serine protease 2 A chain (Preferred)   search this complex
PDBe complex ID: PDB-CPX-126142 (Preferred)   search this ID
PDBe-KB: O00187    P0C0L4   
X-ray diffraction
3.75Å resolution
Released: 10 Aug 2016
Model geometry
Fit model/data
5jpm
5jpm
5jpm
Crystal structure of complement C4b re-refined using iMDFF
Croll TI, Andersen GR
Acta Crystallogr D Struct Biol (2016) [PMID: 27599733  ]
Source organism: Homo sapiens  
Assembly composition: protein/protein complex
Bound ligands: NAG    NAG   
Assembly name: C4d-A (Preferred)   search this complex
PDBe complex ID: PDB-CPX-142895 (Preferred)   search this ID
PDBe-KB: P0C0L4   
X-ray diffraction
3.5Å resolution
Released: 10 Aug 2016
Model geometry
Fit model/data
5jtw
5jtw
5jtw
Cryo-EM structure of complement C4b in complex with nanobody B12
Oosterheert W, De la O Becerra KI, Gros P
J Immunol (2022) [PMID: 35428691  ]
Source organisms: Lama glama  , Homo sapiens  
Assembly composition: protein/protein complex
Bound ligands: NAG    NAG   
Carbohydrate polymer components:
Molecule 1 - NAG(2)
Assembly name: C4d-A and IG-heavy chain (Preferred)   search this complex
PDBe complex ID: PDB-CPX-209600 (Preferred)   search this ID
PDBe-KB: P0C0L4   
Electron Microscopy
3.76Å resolution
Released: 2 Mar 2022
Model geometry
Fit model/data
Data not analysed
7b2q
7b2q
7b2q
Cryo-EM structure of complement C4b in complex with nanobody B5
Oosterheert W, De la O Becerra KI, Gros P
J Immunol (2022) [PMID: 35428691  ]
Source organisms: Lama glama  , Homo sapiens  
Assembly composition: protein/protein complex
Bound ligands: NAG    NAG   
Carbohydrate polymer components:
Molecule 1 - NAG(2)
Assembly name: C4d-A and IG-heavy chain (Preferred)   search this complex
PDBe complex ID: PDB-CPX-209599 (Preferred)   search this ID
PDBe-KB: P0C0L4   
Electron Microscopy
3.43Å resolution
Released: 2 Mar 2022
Model geometry
Fit model/data
Data not analysed
7b2p
7b2p
7b2p
Cryo-EM structure of complement C4b in complex with nanobody E3
Oosterheert W, De la O Becerra KI, van den Bos RM, Gros P
J Immunol (2022) [PMID: 35428691  ]
Source organisms: Lama glama  , Homo sapiens  
Assembly composition: protein/protein complex
Bound ligands: NAG    NAG   
Assembly name: C4d-A and IG-heavy chain (Preferred)   search this complex
PDBe complex ID: PDB-CPX-209598 (Preferred)   search this ID
PDBe-KB: P0C0L4   
Electron Microscopy
3.39Å resolution
Released: 2 Mar 2022
Model geometry
Fit model/data
Data not analysed
7b2m
7b2m
7b2m
Structure of human complement C4 rebuilt using iMDFF
Croll TI, Andersen GR
Acta Crystallogr D Struct Biol (2016) [PMID: 27599733  ]
Source organism: Homo sapiens  
Assembly composition: protein/protein complex
Bound ligands: A2G    PBM    PBM    A2G   
Carbohydrate polymer components:
Molecule 1 - BMA(1), NAG(2)
Molecule 2 - NAG(2)
Molecule 3 - BMA(1), MAN(2), NAG(2)
Assembly name: C4d-A (Preferred)   search this complex
PDBe complex ID: PDB-CPX-142895 (Preferred)   search this ID
PDBe-KB: P0C0L4   
X-ray diffraction
3.6Å resolution
Released: 10 Aug 2016
Model geometry
Fit model/data
5jpn
5jpn
5jpn
The hC4Nb8 complement inhibitory nanobody in complex with C4b
Zarantonello A, Laursen NS, Andersen GR
J Immunol (2020) [PMID: 32769120  ]
Assembly composition: protein/protein complex
Carbohydrate polymer components:
Molecule 1 - BMA(1), NAG(2)
PDBe complex ID: PDB-CPX-276058 (Preferred)   search this ID
PDBe-KB: P0C0L5    P0C0L4   
X-ray diffraction
3.3Å resolution
Released: 24 Jun 2020
Model geometry
Fit model/data
6ysq
6ysq
6ysq
C4ADG FRAGMENT OF HUMAN COMPLEMENT FACTOR C4A
van den Elsen JMH, Martin A, Wong V, Clemenza L, Rose DR, Isenman DE
J Mol Biol (2002) [PMID: 12367531  ]
Source organism: Homo sapiens  
Assembly composition: protein only structure
Modified residues: MSE    MSE   
Assembly name: C4d-A (Preferred)   search this complex
PDBe complex ID: PDB-CPX-142894 (Preferred)   search this ID
PDBe-KB: P0C0L4   
X-ray diffraction
2.3Å resolution
Released: 9 Oct 2002
Model geometry
Fit model/data
1hzf
1hzf
1hzf
Entries 1 to 8 of 8
Entries 1 to 8 of 8