2ffx
From Proteopedia
(New page: 200px<br /> <applet load="2ffx" size="450" color="white" frame="true" align="right" spinBox="true" caption="2ffx, resolution 1.90Å" /> '''Structure of Human ...) |
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caption="2ffx, resolution 1.90Å" /> | caption="2ffx, resolution 1.90Å" /> | ||
'''Structure of Human Ferritin L. Chain'''<br /> | '''Structure of Human Ferritin L. Chain'''<br /> | ||
==Overview== | ==Overview== | ||
| - | Ferritin is the major iron-storage protein present in all cells. It | + | 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. |
==Disease== | ==Disease== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2FFX is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with CD and SO4 as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http:// | + | 2FFX is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=CD:'>CD</scene> and <scene name='pdbligand=SO4:'>SO4</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FFX OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Carter, D | + | [[Category: Carter, D C.]] |
| - | [[Category: Ellenburg, M | + | [[Category: Ellenburg, M P.]] |
| - | [[Category: Ho, J | + | [[Category: Ho, J X.]] |
[[Category: Li, C.]] | [[Category: Li, C.]] | ||
| - | [[Category: Ruble, J | + | [[Category: Ruble, J R.]] |
| - | [[Category: Soitsman, E | + | [[Category: Soitsman, E M.]] |
| - | [[Category: Wang, Z | + | [[Category: Wang, Z M.]] |
| - | [[Category: Wright, B | + | [[Category: Wright, B S.]] |
[[Category: CD]] | [[Category: CD]] | ||
[[Category: SO4]] | [[Category: SO4]] | ||
[[Category: human ferritin light chain perdeuterated capsid]] | [[Category: human ferritin light chain perdeuterated capsid]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 17:20:58 2008'' |
Revision as of 15:21, 21 February 2008
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Structure of Human Ferritin L. Chain
Contents |
Overview
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.
Disease
Known diseases associated with this structure: Basal ganglia disease, adult-onset OMIM:[134790], Hyperferritinemia-cataract syndrome OMIM:[134790]
About this Structure
2FFX is a Single protein structure of sequence from Homo sapiens with and as ligands. Full crystallographic information is available from OCA.
Reference
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
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