1LFH

MOLECULAR REPLACEMENT SOLUTION OF THE STRUCTURE OF APOLACTOFERRIN, A PROTEIN DISPLAYING LARGE-SCALE CONFORMATIONAL CHANGE

PDB DOI: 10.2210/pdb1LFH/pdb

Classification: IRON TRANSPORT
Organism(s): Homo sapiens
Mutation(s): No

Deposited: 1991-09-04 Released: 1993-10-31
Deposition Author(s): Anderson, B.F., Baker, E.N., Norris, G.E.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.80 Å
R-Value Observed: 0.213

wwPDB Validation 3D Report Full Report

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

Literature

Molecular replacement solution of the structure of apolactoferrin, a protein displaying large-scale conformational change.

Norris, G.E., Anderson, B.F., Baker, E.N.

(1991) Acta Crystallogr B 47: 998-1004

PubMed: 1772635 Search on PubMed
DOI: 10.1107/s0108768191008418
Primary Citation of Related Structures:
1LFH

PubMed Abstract:

The crystal structure of an orthorhombic form of human apolactoferrin (ApoLf) has been determined from 2.8 A diffractometer data by molecular replacement methods. A variety of search models derived from the diferric lactoferrin structure (Fe2Lf) were used to obtain a consistent solution to the rotation function. An R-factor search gave the correct translational solution and the model was refined by rigid-body least-squares refinement (program CORELS). Only three of the four domains were located correctly by this procedure, however; the fourth was finally placed correctly by rotating it manually onto three strands of electron density which were recognized as part of its central beta-sheet. The final model, refined by restrained least-squares methods to an R factor of 0.214 for data in the resolution range 10.0 to 2.8 A, shows a large domain movement in the N-terminal half of the molecule (a 54 degree rotation of domain N2) and smaller domain movements elsewhere, when compared with Fe2Lf. A feature of the crystal structure is that although the ApoLf and Fe2Lf unit cells appear very similar, their crystal packing and molecular structures are quite different.

Related Citations:

Apolactoferrin Structure Demonstrates Ligand-Induced Conformational Change in Transferrins
Anderson, B.F., Baker, H.M., Norris, G.E., Rumball, S.V., Baker, E.N.
(1990) Nature 344: 784

Structure of Human Lactoferrin: Crystallographic Structure Analysis and Refinement at 2.8 Angstroms Resolution
Anderson, B.F., Baker, H.M., Norris, G.E., Rice, D.W., Baker, E.N.
(1989) J Mol Biol 209: 711

Transferrins: Insights Into Structure and Function from Studies on Lactoferrin
Baker, E.N., Rumball, S.V., Anderson, B.F.
(1987) Trends Biochem Sci (pers Ed ) 12: 350

Structure of Human Lactoferrin at 3.2 Angstroms Resolution
Anderson, B.F., Baker, H.M., Dodson, E.J., Norris, G.E., Rumball, S.V., Waters, J.M., Baker, E.N.
(1987) Proc Natl Acad Sci U S A 84: 1769

Organizational Affiliation:

Department of Chemistry and Biochemistry, Massey University, Palmerston North, New Zealand.

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
LACTOFERRIN	A	691	Homo sapiens	Mutation(s): 0 Gene Names: LTF, GIG12, LF EC: 3.4.21
UniProt & NIH Common Fund Data Resources
Find proteins for P02788 (Homo sapiens) Explore P02788 Go to UniProtKB: P02788
PHAROS: P02788 GTEx: ENSG00000012223
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P02788
Protein Feature View Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A]	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Ligand Interaction