1LHS

LOGGERHEAD SEA TURTLE MYOGLOBIN (AQUO-MET)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Reptile heme protein structure: X-ray crystallographic study of the aquo-met and cyano-met derivatives of the loggerhead sea turtle (Caretta caretta) myoglobin at 2.0 A resolution.

Nardini, M.Tarricone, C.Rizzi, M.Lania, A.Desideri, A.De Sanctis, G.Coletta, M.Petruzzelli, R.Ascenzi, P.Coda, A.Bolognesi, M.

(1995) J.Mol.Biol. 247: 459-465

  • Primary Citation of Related Structures:  1LHT

  • PubMed Abstract: 
  • The X-ray crystal structures of the aquo-met and cyano-met derivatives of the loggerhead sea turtle (Caretta caretta) myoglobin have been determined at 2.0 A resolution (R = 0.182, and 0.178, respectively). The results here reported, representing the ...

    The X-ray crystal structures of the aquo-met and cyano-met derivatives of the loggerhead sea turtle (Caretta caretta) myoglobin have been determined at 2.0 A resolution (R = 0.182, and 0.178, respectively). The results here reported, representing the first reptile globin solved by X-ray crystallography, have been analyzed in parallel with data for related monomeric hemoproteins, and indicate a strong overall structural similarity between the loggerhead sea turtle and mammalian myoglobins, reflected by the 63% amino acid identity of their primary structures. The root-mean-square deviation between the entire polypeptide backbones of loggerhead sea turtle and sperm whale myoglobins, after structure superposition, is 0.83 A. Upon cyanide binding to the protein distal site, the iron-bound water molecule present in the aquo-met form is displaced by the incoming ligand. Cyanide is oriented towards the inner part of the heme distal site forming a Fe-C-N angle of 133 degrees.


    Related Citations: 
    • X-Ray Crystal Structure of Aplysia Limacina Myoglobin in Different Liganded States
      Conti, E.,Moser, C.,Rizzi, M.,Mattevi, A.,Lionetti, C.,Coda, A.,Ascenzi, P.,Brunori, M.,Bolognesi, M.
      (1993) J.Mol.Biol. 233: 498
    • Structural Studies on the Loggerhead Sea Turtle (Caretta Caretta) Myoglobin
      Petruzzelli, R.,Aureli, G.,Casale, E.,Nardini, M.,Rizzi, M.,Ascenzi, P.,Coletta, M.,De Sanctis, G.,Desideri, A.,Galtieri, A.,Bolognesi, M.
      (1993) Biochem.Mol.Biol.Int. 31: 19


    Organizational Affiliation

    Dipartimento di Fiscia, Università di Genova, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MYOGLOBIN
A
153Caretta carettaGene Names: MB
Find proteins for P56208 (Caretta caretta)
Go to Gene View: MB
Go to UniProtKB:  P56208
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 37.500α = 90.00
b = 61.100β = 90.00
c = 75.200γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement
MOSFLMdata reduction
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-06-03
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-02-22
    Type: Database references