Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 33.72 kDa 
• Atom Count: 2309 
• Modelled Residue Count: 264 
• Deposited Residue Count: 312 
• Unique protein chains: 1

1EYV

THE CRYSTAL STRUCTURE OF NUSB FROM MYCOBACTERIUM TUBERCULOSIS

• DOI: 10.2210/pdb1EYV/pdb

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


• Deposited: 2000-05-09 Released: 2000-05-18 
• Deposition Author(s): Gopal, B., Haire, L.F., Cox, R.A., Colston, M.J., Major, S., Brannigan, J.A., Smerdon, S.J., Dodson, G.G., TB Structural Genomics Consortium (TBSGC)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.234 
• R-Value Work: 0.190 

Literature

The crystal structure of NusB from Mycobacterium tuberculosis.

Gopal, B., Haire, L.F., Cox, R.A., Colston, M.J., Major, S., Brannigan, J.A., Smerdon, S.J., Dodson, G.

(2000) Nat Struct Biol 7: 475-478

• PubMed: 10881194 
• DOI: 10.1038/75876
• Primary Citation of Related Structures:  
  1EYV


• PubMed Abstract: 
  

Both prokaryotes and eukaryotes regulate transcription through mechanisms that suppress termination signals. An antitermination mechanism was first characterized in bacteriophage lambda. Bacteria have analogous machinery that regulates ribosomal RNA transcription and employs host factors, called the N-utilizing (where N stands for the phage lambda N protein) substances (Nus), NusA, NusB, NusE and NusG. Here we report the crystal structure of NusB from Mycobacterium tuberculosis, the bacterium that causes tuberculosis in humans. This molecule shares a similar tertiary structure with the related Escherichia coli protein but adopts a different quaternary organization. We show that, unlike the E. coli homolog, M. tuberculosis NusB is dimeric both in solution and in the crystal. These data help provide a framework for understanding the structural and biological function of NusB in the prokaryotic transcriptional antitermination complex.

---

Related Citations: 

• Crystallization and preliminary X-ray diffraction studies on the N-utilizing substance-B (NusB) from Mycobacterium tuberculosis.
  Gopal, B., Cox, R.A., Colston, M.J., Dodson, G.G., Smerdon, S.J., Haire, L.F.
  (2000) Acta Crystallogr D Biol Crystallogr 56: 64

---

Organizational Affiliation: 

National Institute for Medical Research, Mill Hill, London, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
N-UTILIZING SUBSTANCE PROTEIN B HOMOLOG	A, B	156	Mycobacterium tuberculosis	Mutation(s): 0
Find proteins for P9WIV1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WIV1  Go to UniProtKB:  P9WIV1

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	C [auth A], D [auth B]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.234 
• R-Value Work: 0.190 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.33	α = 90
b = 63.54	β = 90
c = 90.03	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
ARP	model building
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-05-09 
• Released Date: 2000-05-18 
Deposition Author(s): Gopal, B., Haire, L.F., Cox, R.A., Colston, M.J., Major, S., Brannigan, J.A., Smerdon, S.J., Dodson, G.G., TB Structural Genomics Consortium (TBSGC)

Revision History  

• Version 1.0: 2000-05-18
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-01-31
  Changes: Experimental preparation