1HQQ | pdb_00001hqq

MINIPROTEIN MP-2 (M9A) COMPLEX WITH STREPTAVIDIN

• PDB DOI: https://doi.org/10.2210/pdb1HQQ/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Streptomyces avidinii
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-12-19 Released: 2003-09-16 
• Deposition Author(s): Yang, H.W., Liu, D.Q., Fan, X., White, M.A., Fox, R.O.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 
  0.249 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.224 (Depositor), 0.224 (DCC) 

Starting Model: experimental

Literature

Conformational Ensemble Analysis of Ligand Binding in Streptavidin Mini-protein Complexes

Yang, H.W., Liu, D.Q., Fan, X., White, M.A., Fox, R.O.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Hetero 8-mer - A4B4 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 8-mer - A4B1C1D1E1 

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

Macromolecule Content 

• Total Structure Weight: 60.01 kDa 
• Atom Count: 4,116 
• Modeled Residue Count: 528 
• Deposited Residue Count: 572 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
STREPTAVIDIN	A, C [auth B], E [auth C], G [auth D]	129	Streptomyces avidinii	Mutation(s): 0
UniProt
Find proteins for P22629 (Streptomyces avidinii) Explore P22629  Go to UniProtKB:  P22629

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
MP-2	B [auth E], D [auth F], F [auth G], H	14	N/A	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free:  0.249 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.224 (Depositor), 0.224 (DCC) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.133	α = 90
b = 89.299	β = 90.57
c = 58.137	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-09-16 
Deposition Author(s): Yang, H.W., Liu, D.Q., Fan, X., White, M.A., Fox, R.O.

Revision History  

• Version 1.0: 2003-09-16
  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: 2024-11-20
  Changes: Data collection, Database references, Refinement description, Structure summary