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Entry Information
Entry status
(1)
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
Entries
Macromolecules
Compounds
Protein families
Entries 1 to 8 of 8
Select all entries on this page
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
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
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
Assembly name:
C4d-A
(Preferred)
search this complex
PDBe complex ID:
PDB-CPX-142895 (Preferred)
search this ID

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
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

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
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

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
Assembly name:
C4d-A and IG-heavy chain
(Preferred)
search this complex
PDBe complex ID:
PDB-CPX-209598 (Preferred)
search this ID

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
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

The hC4Nb8 complement inhibitory nanobody in complex with C4b
Zarantonello A, Laursen NS, Andersen GR
J Immunol
(2020)
[PMID: 32769120 ]
Source organisms: Escherichia coli , Homo sapiens
Assembly composition: protein/protein complex
Carbohydrate polymer components:
Molecule 1 -
BMA(1), NAG(2)
PDBe complex ID:
PDB-CPX-276058 (Preferred)
search this ID
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
Assembly name:
C4d-A
(Preferred)
search this complex
PDBe complex ID:
PDB-CPX-142894 (Preferred)
search this ID

Entries 1 to 8 of 8