Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

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

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

Biological assembly 2 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 51.74 kDa 
• Atom Count: 3821 
• Modelled Residue Count: 428 
• Deposited Residue Count: 442 
• Unique protein chains: 2

1S1Q

TSG101(UEV) domain in complex with Ubiquitin

• PDB DOI: 10.2210/pdb1S1Q/pdb

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


• Deposited: 2004-01-07 Released: 2004-05-04 
• Deposition Author(s): Sundquist, W.I., Schubert, H.L., Kelly, B.N., Hill, G.C., Holton, J.M., Hill, C.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.240 
• R-Value Work: 0.201 
• R-Value Observed: 0.203 

Literature

Ubiquitin recognition by the human TSG101 protein

Sundquist, W.I., Schubert, H.L., Kelly, B.N., Hill, G.C., Holton, J.M., Hill, C.P.

(2004) Mol Cell 13: 783-789

• PubMed: 15053872 
• DOI: 10.1016/s1097-2765(04)00129-7
• Primary Citation of Related Structures:  
  1S1Q


• PubMed Abstract: 
  

The UEV domain of the TSG101 protein functions in both HIV-1 budding and the vacuolar protein sorting (VPS) pathway, where it binds ubiquitylated proteins as they are sorted into vesicles that bud into late endosomal compartments called multivesicular bodies (MVBs). TSG101 UEV-ubiquitin interactions are therefore important for delivery of both substrates and hydrolytic enzymes to lysosomes, which receive proteins via fusion with MVBs. Here, we report the crystal structure of the TSG101 UEV domain in complex with ubiquitin at 2.0 A resolution. TSG101 UEV contacts the Ile44 surface and an adjacent loop of ubiquitin through a highly solvated interface. Mutations that disrupt the interface inhibit MVB sorting, and the structure also explains how the TSG101 UEV can independently bind its ubiquitin and Pro-Thr/Ser-Ala-Pro peptide ligands. Remarkably, comparison with mapping data from other UEV and related E2 proteins indicates that although the different E2/UEV domains share the same structure and have conserved ubiquitin binding activity, they bind through very different interfaces.

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Organizational Affiliation: 

Department of Biochemistry, University of Utah, Salt Lake City, UT 84132, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tumor susceptibility gene 101 protein	A, C	145	Homo sapiens	Mutation(s): 5  Gene Names: TSG101
UniProt & NIH Common Fund Data Resources
Find proteins for Q99816 (Homo sapiens) Explore Q99816  Go to UniProtKB:  Q99816
PHAROS:  Q99816 GTEx:  ENSG00000074319

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ubiquitin	B, D	76	Homo sapiens	Mutation(s): 1  Gene Names: UBC
UniProt & NIH Common Fund Data Resources
Find proteins for P0CG48 (Homo sapiens) Explore P0CG48  Go to UniProtKB:  P0CG48
PHAROS:  P0CG48

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	F [auth A], G [auth A], J [auth C], K [auth C]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CU	E [auth A], H [auth B], I [auth C], M [auth D]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N
ACY	L [auth C], N [auth D]	ACETIC ACID C2 H4 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, C	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: 0.240 
• R-Value Work: 0.201 
• R-Value Observed: 0.203 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 143.634	α = 90
b = 59.154	β = 128.67
c = 93.998	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-01-07 
• Released Date: 2004-05-04 
Deposition Author(s): Sundquist, W.I., Schubert, H.L., Kelly, B.N., Hill, G.C., Holton, J.M., Hill, C.P.

Revision History  

• Version 1.0: 2004-05-04
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance