3LTL

Crystal structure of human BIG1 Sec7 domain

• PDB DOI: https://doi.org/10.2210/pdb3LTL/pdb

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


• Deposited: 2010-02-16 Released: 2011-04-13 
• Deposition Author(s): Simister, P.C., Joubert, A., Cherfils, J., Biou, V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.236 
• R-Value Work: 0.175 
• R-Value Observed: 0.178 

Starting Model: experimental

Literature

The Sec7 domain structures of human BIG1 and Cytohesin1 Arf nucleotide exchange factors

Zeeh, J.C., Simister, P.C., Rousseau, V., Joubert, A., Cherfils, J., Biou, V.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 48.92 kDa 
• Atom Count: 3,142 
• Modelled Residue Count: 377 
• Deposited Residue Count: 422 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Brefeldin A-inhibited guanine nucleotide-exchange protein 1	A, B	211	Homo sapiens	Mutation(s): 0  Gene Names: ARFGEF1, ARFGEP1, BIG1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y6D6 (Homo sapiens) Explore Q9Y6D6  Go to UniProtKB:  Q9Y6D6
PHAROS:  Q9Y6D6 GTEx:  ENSG00000066777

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACY	E [auth A]	ACETIC ACID C2 H4 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-N
CA	C [auth A], D [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.236 
• R-Value Work: 0.175 
• R-Value Observed: 0.178 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.451	α = 90
b = 36.867	β = 90.06
c = 85.848	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
PHASER	phasing
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-04-13 
Deposition Author(s): Simister, P.C., Joubert, A., Cherfils, J., Biou, V.

Revision History  

• Version 1.0: 2011-04-13
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description