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2fg4
From Proteopedia
| 2fg4, resolution 2.10Å () | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Sites: | , , , , , , , , , , , and | ||||||||
| Ligands: | |||||||||
| Gene: | FTL (Homo sapiens) | ||||||||
| Related: | 2ffx, 2fg8 | ||||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
Contents |
Structure of Human Ferritin L Chain
Ferritin is the major iron-storage protein present in all cells. It generally contains 24 subunits, with different ratios of heavy chain (H) to light chain (L), in the shape of a hollow sphere hosting up to 4500 ferric Fe atoms inside. H-rich ferritins catalyse the oxidation of iron(II), while L-rich ferritins promote the nucleation and storage of iron(III). Several X-ray structures have been determined, including those of L-chain ferritins from horse spleen (HoSF), recombinant L-chain ferritins from horse (HoLF), mouse (MoLF) and bullfrog (BfLF) as well as recombinant human H-chain ferritin (HuHF). Here, structures have been determined of two crystal forms of recombinant human L-chain ferritin (HuLF) obtained from native and perdeuterated proteins. The structures show a cluster of acidic residues at the ferrihydrite nucleation site and at the iron channel along the threefold axis. An ordered Cd2+ structure is observed within the iron channel, offering further insight into the route and mechanism of iron transport into the capsid. The loop between helices D and E, which is disordered in many other L-chain structures, is clearly visible in these two structures. The crystals generated from perdeuterated HuLF will be used for neutron diffraction studies.
Structure of human ferritin L chain., Wang Z, Li C, Ellenburg M, Soistman E, Ruble J, Wright B, Ho JX, Carter DC, Acta Crystallogr D Biol Crystallogr. 2006 Jul;62(Pt 7):800-6. Epub 2006, Jun 20. PMID:16790936
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
2fg4 is a 1 chain structure of Ferritin with sequence from Homo sapiens. Full crystallographic information is available from OCA.
See Also
Reference
- Wang Z, Li C, Ellenburg M, Soistman E, Ruble J, Wright B, Ho JX, Carter DC. Structure of human ferritin L chain. Acta Crystallogr D Biol Crystallogr. 2006 Jul;62(Pt 7):800-6. Epub 2006, Jun 20. PMID:16790936 doi:10.1107/S0907444906018294
