1NPO

BOVINE NEUROPHYSIN II COMPLEX WITH OXYTOCIN

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Crystal structure of the neurophysin-oxytocin complex.

Rose, J.P., Wu, C.K., Hsiao, C.D., Breslow, E., Wang, B.C.

(1996) Nat Struct Biol 3: 163-169

  • DOI: 10.1038/nsb0296-163
  • Primary Citation of Related Structures:  
    1NPO

  • PubMed Abstract: 

    • The first crystal structure of the pituitary hormone oxytocin complexed with its carrier protein neurophysin has been determined and refined to 3.0 A resolution. The hormone-binding site is located at the end of a 3(10)-helix and involves residues from both domains of each monomer ...

    The first crystal structure of the pituitary hormone oxytocin complexed with its carrier protein neurophysin has been determined and refined to 3.0 A resolution. The hormone-binding site is located at the end of a 3(10)-helix and involves residues from both domains of each monomer. Hormone residues Tyr 2, which is buried deep in the binding pocket, and Cys 1 have been confirmed as the key residues involved in neurophysin-hormone recognition. We have compared the bound oxytocin observed in the neurophysin-oxytocin complex, the X-ray structures of unbound oxytocin analogues and the NMR-derived structure for bound oxytocin. We find that while our structure is in agreement with the previous crystallographic findings, it differs from the NMR result with regard to how Tyr 2 of the hormone is recognized by neurophysin.

    Related Citations: 
    • Crystal Structure of a Bovine Neurophysin II Dipeptide Complex at 2.8 A Determined from the Single-Wavelength Anomalous Scattering Signal of an Incorporated Iodine Atom
      Chen, L.Q., Rose, J.P., Breslow, E., Yang, D., Chang, W.R., Furey Junior, W.F., Sax, M., Wang, B.C.
      (1991) Proc Natl Acad Sci U S A 88: 4240
    • Crystals of Modified Bovine Neurophysin II
      Rose, J.P., Yang, D., Yoo, C.S., Sax, M., Breslow, E., Wang, B.C.
      (1988) Eur J Biochem 174: 145
    • Crystals of a Bovine Neurophysin II-Dipeptide Amide Complex
      Yoo, C.S., Wang, B.C., Sax, M., Breslow, E.
      (1979) J Mol Biol 127: 241
    Organizational Affiliation: 

    Department of Biochemistry and Molecular Biology, University of Georgia, Athens 30602, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NEUROPHYSIN IIA95Bos taurusMutation(s): 0 
Gene Names: AVP
UniProt
Find proteins for P01180 (Bos taurus)
Explore P01180 
Go to UniProtKB:  P01180
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01180
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
OXYTOCINB, D9N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
NEUROPHYSIN IIC95Bos taurusMutation(s): 0 
Gene Names: AVP
UniProt
Find proteins for P01180 (Bos taurus)
Explore P01180 
Go to UniProtKB:  P01180
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01180
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.05α = 90
b = 69.05β = 90
c = 113.26γ = 90
Software Package:
Software NamePurpose
XENGENdata collection
X-PLORmodel building
X-PLORrefinement
XENGENdata reduction
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-02-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance