ISDA

Entry Detail

PDB ID:

4X1B

Keywords:

METAL TRANSPORT

Title:

Human serum transferrin with ferric ion bound at the C-lobe only

Biological Source:

Source Organism:

Homo sapiens

PDB Version:

Deposition Date:

2014-11-24

Release Date:

2015-04-08

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.45 Å

R-Value Free:

0.22

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

C 2 2 21

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Serotransferrin
Chain IDs:A
Chain Length:679
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P02787 Pfam ID:PF00405

Ligand Molecules

GOL

MLI

Primary Citation

"Anion clamp" allows flexible protein to impose coordination geometry on metal ions

Wang, M, Lai, T.P, Wang, L, Zhang, H, Yang, N, Sadler, P.J, Sun, H.Show

Chem.Commun.(Camb.) 51 7867 7870 (2015)

PMID: 25854324 DOI: 10.1039/c4cc09642h

Abstact

X-ray crystal structures of human serum transferrin (77 kDa) with Yb(III) or Fe(III) bound to the C-lobe and malonate as the synergistic anion show that the large Yb(III) ion causes the expansion of the metal binding pocket while octahedral metal coordination geometry is preserved, an unusual geometry for a lanthanide ion.

Legend

Protein

Chemical

Disease

Primary Citation of related structures