4YDY

CRYSTAL STRUCTURE OF DARPIN 44C12V5 IN COMPLEX WITH HUMAN IL-4

• PDB DOI: https://doi.org/10.2210/pdb4YDY/pdb

• Classification: CYTOKINE/DE NOVO PROTEIN
• Organism(s): synthetic construct, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-02-23 Released: 2015-03-04 
• Deposition Author(s): Teplyakov, A., Obmolova, G., Gilliland, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.239 
• R-Value Work: 0.202 
• R-Value Observed: 0.202 

Starting Models: experimental

Literature

CRYSTAL STRUCTURE OF DARPIN 44C12V5 IN COMPLEX WITH HUMAN IL-4

Teplyakov, A., Obmolova, G., Gilliland, G.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 66.26 kDa 
• Atom Count: 4,625 
• Modelled Residue Count: 561 
• Deposited Residue Count: 598 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DARPIN 44C12V5	A, C [auth B]	169	synthetic construct	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Interleukin-4	B [auth I], D [auth J]	130	Homo sapiens	Mutation(s): 0  Gene Names: IL4
UniProt & NIH Common Fund Data Resources
Find proteins for P05112 (Homo sapiens) Explore P05112  Go to UniProtKB:  P05112
PHAROS:  P05112 GTEx:  ENSG00000113520

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	E [auth A], F [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ACT	G [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.239 
• R-Value Work: 0.202 
• R-Value Observed: 0.202 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.25	α = 90
b = 113.66	β = 90
c = 117.06	γ = 90

Software Package:

Software Name	Purpose
XDS	data reduction
XDS	data scaling
PHASER	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-03-04 
Deposition Author(s): Teplyakov, A., Obmolova, G., Gilliland, G.

Revision History  

• Version 1.0: 2015-03-04
  Type: Initial release
  
• Version 1.1: 2016-07-20
  Changes: Data collection
• Version 1.2: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.3: 2024-11-06
  Changes: Structure summary