4LOR

C1s CUB1-EGF-CUB2 in complex with a collagen-like peptide from C1q

• PDB DOI: https://doi.org/10.2210/pdb4LOR/pdb

• Classification: HYDROLASE/protein binding
• Organism(s): Homo sapiens
• Expression System: Cricetinae
• Mutation(s): No 


• Deposited: 2013-07-13 Released: 2013-08-07 
• Deposition Author(s): Wallis, R., Venkatraman Girija, U., Moody, P.C.E., Marshall, J.E.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.252 
• R-Value Work: 0.196 
• R-Value Observed: 0.199 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A3B1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A1B1C1D1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 38.94 kDa 
• Atom Count: 2,701 
• Modelled Residue Count: 345 
• Deposited Residue Count: 363 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Complement C1s subcomponent heavy chain	A	276	Homo sapiens	Mutation(s): 0  Gene Names: C1S EC: 3.4.21.42
UniProt & NIH Common Fund Data Resources
Find proteins for P09871 (Homo sapiens) Explore P09871  Go to UniProtKB:  P09871
PHAROS:  P09871 GTEx:  ENSG00000182326

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
collagen-like peptide from C1q	B, C, D	29	N/A	Mutation(s): 0

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	J [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
CA	E [auth A], F [auth A], G [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
NA	H [auth A], I [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
HYP	B, C, D	L-PEPTIDE LINKING	C5 H9 N O3		PRO

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.252 
• R-Value Work: 0.196 
• R-Value Observed: 0.199 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.353	α = 90
b = 71.173	β = 111.12
c = 98.393	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
StructureStudio	data collection
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-08-07 
Deposition Author(s): Wallis, R., Venkatraman Girija, U., Moody, P.C.E., Marshall, J.E.

Revision History  

• Version 1.0: 2013-08-07
  Type: Initial release
  
• Version 1.1: 2013-08-28
  Changes: Database references
• Version 1.2: 2013-09-04
  Changes: Database references
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary