6Y8M

Fragment bikinin bound to Interleukin 1 beta

• PDB DOI: https://doi.org/10.2210/pdb6Y8M/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2020-03-05 Released: 2020-03-18 
• Deposition Author(s): De Nicola, G.F., Nichols, C.E.
• Funding Organization(s): British Heart Foundation, Medical Research Council (MRC, United Kingdom)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.222 
• R-Value Work: 0.197 
• R-Value Observed: 0.198 

Starting Model: experimental

Literature

Fragment bikinin bound to Interleukin 1 beta

De Nicola, G.F., Nichols, C.E.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 18.04 kDa 
• Atom Count: 1,308 
• Modelled Residue Count: 149 
• Deposited Residue Count: 153 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Interleukin-1 beta	A	153	Homo sapiens	Mutation(s): 0  Gene Names: IL1B, IL1F2
UniProt & NIH Common Fund Data Resources
Find proteins for P01584 (Homo sapiens) Explore P01584  Go to UniProtKB:  P01584
PHAROS:  P01584 GTEx:  ENSG00000125538

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SX2 (Subject of Investigation/LOI)	C [auth A], D [auth A]	4-[(5-bromopyridin-2-yl)amino]-4-oxobutanoic acid C9 H9 Br N2 O3 XFYYQDHEDOXWGA-UHFFFAOYSA-N
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.222 
• R-Value Work: 0.197 
• R-Value Observed: 0.198 
• Space Group: P 4₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.795	α = 90
b = 54.795	β = 90
c = 75.218	γ = 90

Software Package:

Software Name	Purpose
CrysalisPro	data collection
CrysalisPro	data reduction
Aimless	data scaling
PHASER	phasing
PHENIX	refinement

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-03-18 
Deposition Author(s): De Nicola, G.F., Nichols, C.E.

---

Funding Organization	Location	Grant Number
British Heart Foundation	United Kingdom	SP/14/2/30922, FS/14/29/30896
Medical Research Council (MRC, United Kingdom)	United Kingdom	MC_PC_17164

Revision History  

• Version 1.0: 2020-03-18
  Type: Initial release
  
• Version 1.1: 2024-01-24
  Changes: Data collection, Database references, Refinement description