1HFX

ALPHA-LACTALBUMIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structures of guinea-pig, goat and bovine alpha-lactalbumin highlight the enhanced conformational flexibility of regions that are significant for its action in lactose synthase.

Pike, A.C.Brew, K.Acharya, K.R.

(1996) Structure 4: 691-703

  • DOI: 10.1016/s0969-2126(96)00075-5
  • Primary Citation of Related Structures:  
    1HFZ, 1HFY, 1HFX

  • PubMed Abstract: 
  • The regulation of milk lactose biosynthesis is highly dependent on the action of a specifier protein, alpha-lactalbumin (LA). Together with a glycosyltransferase, LA forms the enzyme complex lactose synthase. LA promotes the binding of glucose to the ...

    The regulation of milk lactose biosynthesis is highly dependent on the action of a specifier protein, alpha-lactalbumin (LA). Together with a glycosyltransferase, LA forms the enzyme complex lactose synthase. LA promotes the binding of glucose to the complex and facilitates the biosynthesis of lactose. To gain further insight into the molecular basis of LA function in lactose synthase we have determined the structures of three species variants of LA.


    Related Citations: 
    • Crystal Structure of Human Alpha-Lactalbumin at 1.7 A Resolution
      Acharya, K.R., Ren, J.S., Stuart, D.I., Phillips, D.C., Fenna, R.E.
      (1991) J Mol Biol 221: 571
    • Refined Structure of Baboon Alpha-Lactalbumin at 1.7 A Resolution. Comparison with C-Type Lysozyme
      Acharya, K.R., Stuart, D.I., Walker, N.P., Lewis, M., Phillips, D.C.
      (1989) J Mol Biol 208: 99

    Organizational Affiliation

    School of Biology and Biochemistry, University of Bath, Claverton Down, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA-LACTALBUMINA123Cavia porcellusMutation(s): 0 
Gene Names: LALBA
EC: 2.4.1.22
Find proteins for P00713 (Cavia porcellus)
Explore P00713 
Go to UniProtKB:  P00713
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.59α = 90
b = 64.87β = 90
c = 49γ = 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 

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