6SVA

Multicrystal structure of equine Haemoglobin at room temperature using a multilayer monochromator.

• PDB DOI: https://doi.org/10.2210/pdb6SVA/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Equus caballus
• Mutation(s): No 


• Deposited: 2019-09-18 Released: 2019-11-20 
• Deposition Author(s): Sandy, J., Sanchez-Weatherby, J., Mikolajek, H., Lewis, G., Angus, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.92 Å
• R-Value Free: 0.173 
• R-Value Work: 0.141 
• R-Value Observed: 0.142 

Starting Model: experimental

Literature

Protein-to-structure pipeline for ambient-temperature crystallography at VMXi

Mikolajek, H., Sanchez-Weatherby, J., Sandy, J., Gildea, R.G., Campeotto, I., Cheruvara, H., Clarke, J.D., Foster, T., Fujii, S., Paulsen, I.T., Shah, B.S., Hough, M.A.

(2023) IUCrJ 

• DOI: https://doi.org/10.1107/S2052252523003810

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Dihedral - D2  (Explore in 3D)
Pseudo Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 32.25 kDa 
• Atom Count: 2,420 
• Modelled Residue Count: 285 
• Deposited Residue Count: 286 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin subunit alpha	A	140	Equus caballus	Mutation(s): 0
UniProt
Find proteins for P01958 (Equus caballus) Explore P01958  Go to UniProtKB:  P01958

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin subunit beta	B	146	Equus caballus	Mutation(s): 0
UniProt
Find proteins for P02062 (Equus caballus) Explore P02062  Go to UniProtKB:  P02062

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	C [auth A], D [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.92 Å
• R-Value Free: 0.173 
• R-Value Work: 0.141 
• R-Value Observed: 0.142 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 108.515	α = 90
b = 62.992	β = 111.051
c = 54.591	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
DIALS	data reduction
xia2	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2019-11-20 
Deposition Author(s): Sandy, J., Sanchez-Weatherby, J., Mikolajek, H., Lewis, G., Angus, R.

Revision History  

• Version 1.0: 2019-11-20
  Type: Initial release
  
• Version 1.1: 2023-05-17
  Changes: Database references, Derived calculations
• Version 1.2: 2024-02-07
  Changes: Data collection, Refinement description