1CE2: Structure Of Diferric Buffalo Lactoferrin At 2.5a Resolution

The structure of buffalo lactoferrin has been determined at 303 K. The crystals belong to orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 77.5, b = 91.0, c = 131.5 A and Z = 4. The structure has been refined to an R factor of 0.187. The overall structure of the protein is similar to its structure determined at 277 K in a different crystal form. However, the lobe orientations in the two structures differ by 9.0 degrees, suggesting significant inter-lobe flexibility in this family of proteins. The inter-lobe interactions are predominantly hydrophobic and could act as a cushion for a change in orientation under the influence of external conditions. On the other hand, the domain arrangements are found to be similar in 277 and 303 K crystal structures, with orientations differing by 1.5 and 1.0 degrees in the N and C lobes, respectively. The results of these investigations suggest that the increase in temperature helps in the production of better quality crystals.
PDB ID: 1CE2Download
MMDB ID: 9871
PDB Deposition Date: 1999/3/13
Updated in MMDB: 2017/10
Experimental Method:
x-ray diffraction
Resolution: 2.5  Å
Source Organism:
Similar Structures:
Biological Unit for 1CE2: monomeric; determined by author
Molecular Components in 1CE2
Label Count Molecule
Protein (1 molecule)
Protein (Lactoferrin)
Molecule annotation
Chemicals (4 molecules)
* Click molecule labels to explore molecular sequence information.

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