3B0I

Crystal structure of recombinant human alpha lactalbumin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural insights into the stability perturbations induced by N-terminal variation in human and goat alpha-lactalbumin

Makabe, K.Nakamura, T.Kuwajima, K.

(2013) Protein Eng.Des.Sel. 26: 165-170

  • DOI: 10.1093/protein/gzs093
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Addition of an extra methionine at the N-terminus by recombinant expression of α-lactalbumin in Escherichia coli significantly destabilizes the protein, and this destabilization has hampered mutational analyses such as the mutational phi-value analys ...

    Addition of an extra methionine at the N-terminus by recombinant expression of α-lactalbumin in Escherichia coli significantly destabilizes the protein, and this destabilization has hampered mutational analyses such as the mutational phi-value analysis of the protein. Deletion of residue 1 from the recombinant form recovers the stability in human and goat α-lactalbumin. Here, we thus determined the crystal structures of the residue 1-deletion variants of recombinant human and goat α-lactalbumin, and compared the structures with those of the authentic and recombinant forms. The results demonstrate the importance of the N-terminal backbone structure and hydrogen-bonding pattern for the stability of α-lactalbumin.


    Organizational Affiliation

    Okazaki Institute for Integrative Bioscience and Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan. makabe@yz.yamagata-u.ac.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Alpha-lactalbumin
A
124Homo sapiensMutation(s): 0 
Gene Names: LALBA (LYZL7)
Find proteins for P00709 (Homo sapiens)
Go to Gene View: LALBA
Go to UniProtKB:  P00709
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.209 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 31.702α = 90.00
b = 33.156β = 104.09
c = 46.148γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-3000data collection
REFMACrefinement
HKL-3000data scaling
HKL-3000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-06-10 
  • Released Date: 2012-06-13 
  • Deposition Author(s): Makabe, K.

Revision History 

  • Version 1.0: 2012-06-13
    Type: Initial release
  • Version 1.1: 2014-01-15
    Type: Database references