1T1N

CRYSTAL STRUCTURE OF CARBONMONOXY HEMOGLOBIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of Trematomus newnesi haemoglobin re-opens the root effect question.

Mazzarella, L.D'Avino, R.di Prisco, G.Savino, C.Vitagliano, L.Moody, P.C.E.Zagari, A.

(1999) J.Mol.Biol. 287: 897-906

  • DOI: 10.1006/jmbi.1999.2632
  • Also Cited By: 2H8F, 2H8D, 2AA1

  • PubMed Abstract: 
  • As new structural data have become available, somewhat contrasting explanations of the Root effect in fish haemoglobins (Hb) have been provided. Hb 1 of the Antarctic fish Trematomus newnesi has a nearly pH-independent oxygen affinity, in spite of 95 ...

    As new structural data have become available, somewhat contrasting explanations of the Root effect in fish haemoglobins (Hb) have been provided. Hb 1 of the Antarctic fish Trematomus newnesi has a nearly pH-independent oxygen affinity, in spite of 95 % sequence identity with Hb 1 of Trematomus (previously named Pagothenia) bernacchii that has a strong Root effect. Here, the 2.2 A R-state structure of Trematomus newnesi Hb 1 is presented. The structure is similar to that of Root effect fish Hbs from Spot and T. bernacchii, suggesting that the differences in the pH dependence cannot be related to the modulation of the R-state. In comparison to T. bernacchii Hb 1, the role of the three mutations Thr41 (C6)alpha-->Ile, Ala97 (G3)alpha-->Ser and His41 (C7)beta-->Tyr at the alpha1beta2-interface is discussed.


    Organizational Affiliation

    Centro di Studio di Biocristallografia, CNR, Napoli, Italy. mazarrella@chemna.dichi.unina.it




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (HEMOGLOBIN)
A
143Trematomus newnesiMutation(s): 0 
Gene Names: hba1
Find proteins for P45718 (Trematomus newnesi)
Go to UniProtKB:  P45718
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (HEMOGLOBIN)
B
146Trematomus newnesiMutation(s): 0 
Find proteins for P45720 (Trematomus newnesi)
Go to UniProtKB:  P45720
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A, B
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
CMO
Query on CMO

Download SDF File 
Download CCD File 
A, B
CARBON MONOXIDE
C O
UGFAIRIUMAVXCW-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
A
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Work: 0.192 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 91.170α = 90.00
b = 88.060β = 97.65
c = 55.250γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
MOSFLMdata reduction
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-29
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance