2B97 | pdb_00002b97

Ultra-high resolution structure of hydrophobin HFBII

• PDB DOI: https://doi.org/10.2210/pdb2B97/pdb

• Classification: SURFACE ACTIVE PROTEIN
• Organism(s): Trichoderma reesei
• Mutation(s): No 


• Deposited: 2005-10-11 Released: 2006-03-28 
• Deposition Author(s): Hakanpaa, J., Linder, M., Popov, A., Schmidt, A., Rouvinen, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 0.75 Å
• R-Value Free: 
  0.148 (Depositor), 0.127 (DCC) 
• R-Value Work: 
  0.130 (Depositor), 0.119 (DCC) 

Starting Model: experimental

Literature

Hydrophobin HFBII in detail: ultrahigh-resolution structure at 0.75 A.

Hakanpaa, J., Linder, M., Popov, A., Schmidt, A., Rouvinen, J.

(2006) Acta Crystallogr D Biol Crystallogr 62: 356-367

• PubMed: 16552136 
• DOI: https://doi.org/10.1107/S0907444906000862
• Primary Citation Related Structures: 
  2B97


• PubMed Abstract: 
  

  Hydrophobins are small proteins secreted by filamentous fungi that have a unique ability to spontaneously form amphiphilic layers. Hydrophobins have only recently been structurally characterized through the first crystal structure determination of a protein of this class, Trichoderma reesei hydrophobin HFBII [Hakanpää, Paananen et al. (2004), J. Biol. Chem. 279, 534-539]. The resolution of the HFBII structure has now been extended to an ultrahigh resolution of 0.75 A. The structure was refined conventionally and multipole refinement has been initiated. The ultrahigh-resolution structure is analyzed here in detail and comparison is made to the previous atomic resolution structure of the same protein as well as to other ultrahigh-resolution structures found in the Protein Data Bank.

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Organizational Affiliation: 
• Department of Chemistry, University of Joensuu, PO Box 111, 80101 Joensuu, Finland. [e-mail]

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: 14.46 kDa 
• Atom Count: 1,278 
• Modeled Residue Count: 140 
• Deposited Residue Count: 142 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hydrophobin II	A, B	71	Trichoderma reesei	Mutation(s): 0
UniProt
Find proteins for P79073 (Hypocrea jecorina) Explore P79073  Go to UniProtKB:  P79073

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MN	C [auth A]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 0.75 Å
• R-Value Free:  0.148 (Depositor), 0.127 (DCC) 
• R-Value Work:  0.130 (Depositor), 0.119 (DCC) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 78.544	α = 90
b = 46.254	β = 111.64
c = 34.687	γ = 90

Software Package:

Software Name	Purpose
SHELX	model building
SHELXL-97	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHELX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-03-28 
Deposition Author(s): Hakanpaa, J., Linder, M., Popov, A., Schmidt, A., Rouvinen, J.

Revision History  

• Version 1.0: 2006-03-28
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2024-10-16
  Changes: Structure summary