ISDA

Deposition Date 1999-10-04

Release Date 2000-03-01

Last Version Date 2024-10-30

Entry Detail

PDB ID:

1D4N

Keywords:

METAL TRANSPORT

Title:

HUMAN SERUM TRANSFERRIN

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Cricetinae

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Free:

0.21

R-Value Work:

0.17

R-Value Observed:

0.17

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:TRANSFERRIN
Gene (Uniprot):TF
Mutations:H207E
Chain IDs:A
Chain Length:329
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P02787 Pfam ID:PF00405

Ligand Molecules

CO3

Primary Citation

Crystal structures of two mutants (K206Q, H207E) of the N-lobe of human transferrin with increased affinity for iron.

Yang, A.H, MacGillivray, R.T, Chen, J, Luo, Y, Wang, Y, Brayer, G.D, Mason, A.B, Woodworth, R.C, Murphy, M.E.Show

Protein Sci. 9 49 52 (2000)

PMID: 10739246

Abstact

The X-ray crystallographic structures of two mutants (K206Q and H207E) of the N-lobe of human transferrin (hTF/2N) have been determined to high resolution (1.8 and 2.0 A, respectively). Both mutant proteins bind iron with greater affinity than native hTF/2N. The structures of the K206Q and H207E mutants show interactions (both H-bonding and electrostatic) that stabilize the interaction of Lys296 in the closed conformation, thereby stabilizing the iron bound forms.

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Primary Citation of related structures