1HLM

AMINO ACID SEQUENCE OF A GLOBIN FROM THE SEA CUCUMBER CAUDINA (MOLPADIA) ARENICOLA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 

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This is version 1.3 of the entry. See complete history. 


Literature

Amino acid sequence of a globin from the sea cucumber Caudina (Molpadia) arenicola.

Mauri, F., Omnaas, J., Davidson, L., Whitfill, C., Kitto, G.B.

(1991) Biochim Biophys Acta 1078: 63-67

  • DOI: 10.1016/0167-4838(91)90093-f
  • Primary Citation of Related Structures:  
    1HLM

  • PubMed Abstract: 

    • Coelomic cells from the sea cucumber Caudina (Molpadia) arenicola contain four major globins, A, B, C and D. The hemoglobins from this organism show unusual ligand-linked dissociation properties. The complete amino acid sequence of the D globin has been established ...

    Coelomic cells from the sea cucumber Caudina (Molpadia) arenicola contain four major globins, A, B, C and D. The hemoglobins from this organism show unusual ligand-linked dissociation properties. The complete amino acid sequence of the D globin has been established. It is N-acetylated, consists of 158 residues and has a 10 amino acid N-terminal extension similar to that found in some other invertebrate globins. The C. arenicola D globin has an equal sequence identity (28%) with both alpha and beta human globins and as anticipated, is more closely related to these vertebrate proteins than are molluscan globins. The C. arenicola D globin shows a 59% identity with the globin I from the sea cucumber Paracaudina chilensis. The availability of the C. arenicola D globin sequence will aid the X-ray analysis of this protein and facilitate an understanding of the changes in subunit interactions that occur with cooperative ligand binding.

    Related Citations: 
    • Preliminary Crystallographic Data on Monomeric and Dimeric Hemoglobins from the Sea Cucumber, Molpadia Arenicola
      Carson, W.M., Bowers, T.R., Kitto, G.B., Hackert, M.L.
      (1979) J Biol Chem 254: 7400
    • N-Terminal Substitution of Some Sea Cucumber Hemoglobins
      Kitto, G.B., Erwin, D., West, R., Omnaas, J.
      (1976) Comp Biochem Physiol B 55: 105
    Organizational Affiliation: 

    Clayton Foundation Biochemical Institute, Department of Chemistry and Biochemistry, University of Texas, Austin.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEMOGLOBIN (CYANO MET) A159Molpadia arenicolaMutation(s): 0 
Find proteins for P80017 (Molpadia arenicola)
Explore P80017 
Go to UniProtKB:  P80017
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM
Download Ideal Coordinates CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L		 Ligand Interaction
CYN
Query on CYN
Download Ideal Coordinates CCD File 
A
CYANIDE ION
C N
XFXPMWWXUTWYJX-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77α = 90
b = 77β = 90
c = 61.5γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-02-07
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other