1HZ4

CRYSTAL STRUCTURE OF TRANSCRIPTION FACTOR MALT DOMAIN III

• PDB DOI: https://doi.org/10.2210/pdb1HZ4/pdb

• Classification: TRANSCRIPTION ACTIVATOR
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-01-23 Released: 2001-11-28 
• Deposition Author(s): Steegborn, C., Danot, O., Clausen, T., Huber, R.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.207 
• R-Value Work: 0.189 

Literature

Crystal structure of transcription factor MalT domain III: a novel helix repeat fold implicated in regulated oligomerization.

Steegborn, C., Danot, O., Huber, R., Clausen, T.

(2001) Structure 9: 1051-1060

• PubMed: 11709169 
• DOI: https://doi.org/10.1016/s0969-2126(01)00665-7
• Primary Citation of Related Structures:  
  1HZ4


• PubMed Abstract: 
  

  MalT from Escherichia coli, the best-studied member of the MalT family of ATP-dependent transcriptional activators, regulates the genes for malto-oligosaccharide utilization. The active form of this 4 domain protein is a homooligomer, and its multimerization is induced by the binding of maltotriose. Domains II and III of MalT were suggested to mediate the oligomerization process, but its molecular mechanism and the specific functions of these domains remain to be identified.

---

Organizational Affiliation: 

Max-Planck-Institut für Biochemie, Abteilung Strukturforschung, Am Klopferspitz 18a, 82152, Planegg-Martinsried, Germany. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 44 kDa 
• Atom Count: 3,525 
• Modelled Residue Count: 366 
• Deposited Residue Count: 373 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MALT REGULATORY PROTEIN	A	373	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P06993 (Escherichia coli (strain K12)) Explore P06993  Go to UniProtKB:  P06993

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BEZ	J [auth A]	BENZOIC ACID C7 H6 O2 WPYMKLBDIGXBTP-UHFFFAOYSA-N
SO4	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	K [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.207 
• R-Value Work: 0.189 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 87.845	α = 90
b = 87.845	β = 90
c = 110.036	γ = 120

Software Package:

Software Name	Purpose
MLPHARE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-11-28 
Deposition Author(s): Steegborn, C., Danot, O., Clausen, T., Huber, R.

Revision History  

• Version 1.0: 2001-11-28
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations