1C7C

DEOXY RHB1.1 (RECOMBINANT HEMOGLOBIN)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.227 
  • R-Value Observed: 0.175 

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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

Genetically crosslinked hemoglobin: a structural study.

Brucker, E.A.

(2000) Acta Crystallogr D Biol Crystallogr 56: 812-816

  • DOI: 10.1107/s0907444900006557
  • Primary Citation of Related Structures:  
    1C7B, 1C7C, 1C7D

  • PubMed Abstract: 
  • The crystal structures of three recombinant human hemoglobins, rHb1. 0, rHb1.1 and rHb1.2, have been determined in the deoxy state at 1.8 A resolution. Two of the three proteins, rHb1.1 and rHb1.2, contain a genetic fusion of the alpha subunits, a one- or two-glycine link, respectively, whereas rHb1 ...

    The crystal structures of three recombinant human hemoglobins, rHb1. 0, rHb1.1 and rHb1.2, have been determined in the deoxy state at 1.8 A resolution. Two of the three proteins, rHb1.1 and rHb1.2, contain a genetic fusion of the alpha subunits, a one- or two-glycine link, respectively, whereas rHb1.0 does not. The glycine crosslinks, localized between one N- and C--termini pair of the alpha subunits in the deoxy crystalline state, do not perturb the overall tertiary or quaternary or even the local structure of hemoglobin. Therefore, genetic fusion to prevent the dissociation of the hemoglobin tetramer, thereby inhibiting renal clearance based upon molecular size, is a structurally conservative method to stabilize hemoglobin for use as an oxygen-delivery therapeutic.


    Related Citations: 
    • Structures of a Hemoglobin-Based Blood Substitute: Insights Into the Function of Allosteric Proteins
      Kroeger, K.S., Kundrot, C.E.
      (1997) Structure 5: 227
    • A Human Recombinant Haemoglobin Designed for Use as a Blood Substitute
      Looker, D., Abbot-Brown, D., Cozart, P., Durfee, S., Hoffman, S., Mathews, A.J., Miller-Roehrich, J., Shoemaker, S., Trimble, S., Fermi, G., Komiyama, N.H., Nagai, K., Stetler, G.L.
      (1992) Nature 356: 258

    Organizational Affiliation

    Baxter Healthcare Corporation, Hemoglobin Therapeutics Division, 2545 Central Avenue, Boulder, CO 80301-2857, USA. ebrucker@baxter. com.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (DEOXYHEMOGLOBIN (ALPHA CHAIN))A283Homo sapiensMutation(s): 1 
Gene Names: HBA1
UniProt & NIH Common Fund Data Resources
Find proteins for P69905 (Homo sapiens)
Explore P69905 
Go to UniProtKB:  P69905
PHAROS:  P69905
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (DEOXYHEMOGLOBIN (BETA CHAIN))B, C [auth D]146Homo sapiensMutation(s): 2 
Gene Names: HBB
UniProt & NIH Common Fund Data Resources
Find proteins for P68871 (Homo sapiens)
Explore P68871 
Go to UniProtKB:  P68871
PHAROS:  P68871
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM (Subject of Investigation/LOI)
Query on HEM

Download Ideal Coordinates CCD File 
D [auth A], E [auth A], F [auth B], G [auth D]PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.227 
  • R-Value Observed: 0.175 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.204α = 90
b = 83.357β = 99.07
c = 54.003γ = 90
Software Package:
Software NamePurpose
SHELXL-97refinement
XSCALEdata scaling
CNSrefinement
XDSdata scaling
XDSdata reduction
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

  • Deposited Date: 2000-02-09 
  • Released Date: 2000-06-30 
  • Deposition Author(s): Brucker, E.A.

Revision History  (Full details and data files)

  • Version 1.0: 2000-06-30
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-08-02
    Changes: Refinement description, Source and taxonomy
  • Version 1.4: 2019-07-24
    Changes: Data collection, Refinement description
  • Version 1.5: 2021-11-03
    Changes: Database references, Derived calculations