Biological Assembly 1  

 3D View: Structure | Electron Density

Standalone Viewers  (To be retired June 1st  )
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B 

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

Macromolecule Content

• Total Structure Weight: 21.55 kDa 
• Atom Count: 1400 
• Residue Count: 151 
• Unique protein chains: 2

5JW9

The Crystal Structure of ELL2 Oclludin Domain and AFF4 peptide

• DOI: 10.2210/pdb5JW9/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2016-05-11 Released: 2017-02-08 
• Deposition Author(s): Qi, S., Hurley, J.H.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.248 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 

Literature

Structural basis for ELL2 and AFF4 activation of HIV-1 proviral transcription.

Qi, S., Li, Z., Schulze-Gahmen, U., Stjepanovic, G., Zhou, Q., Hurley, J.H.

(2017) Nat Commun 8: 14076-14076

• PubMed: 28134250 
• DOI: 10.1038/ncomms14076
• Structures With Same Primary Citation


• PubMed Abstract: 
  

The intrinsically disordered scaffold proteins AFF1/4 and the transcription elongation factors ELL1/2 are core components of the super elongation complex required for HIV-1 proviral transcription. Here we report the 2.0-Å resolution crystal structure of the human ELL2 C-terminal domain bound to its 50-residue binding site on AFF4, the ELLBow. The ELL2 domain has the same arch-shaped fold as the tight junction protein occludin. The ELLBow consists of an N-terminal helix followed by an extended hairpin that we refer to as the elbow joint, and occupies most of the concave surface of ELL2. This surface is important for the ability of ELL2 to promote HIV-1 Tat-mediated proviral transcription. The AFF4-ELL2 interface is imperfectly packed, leaving a cavity suggestive of a potential binding site for transcription-promoting small molecules.

---

Organizational Affiliation: 

Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
AF4/FMR2 family member 4	A	64	Homo sapiens	Mutation(s): 0  Gene Names: AFF4, AF5Q31, MCEF, HSPC092
Find proteins for Q9UHB7 (Homo sapiens) Go to UniProtKB:  Q9UHB7
NIH Common Fund Data Resources
PHAROS  Q9UHB7 GTEx  ENSG00000072364

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
RNA polymerase II elongation factor ELL2	B	122	Homo sapiens	Mutation(s): 1  Gene Names: ELL2
Find proteins for O00472 (Homo sapiens) Go to UniProtKB:  O00472
NIH Common Fund Data Resources
PHAROS  O00472 GTEx  ENSG00000118985

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.248 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 52.641	α = 90
b = 57.422	β = 90
c = 61.338	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data collection
HKL-2000	data scaling
SHELX	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2016-05-11 
• Released Date: 2017-02-08 
Deposition Author(s): Qi, S., Hurley, J.H.

Revision History 

• Version 1.0: 2017-02-08
  Type: Initial release