1fha: Difference between revisions

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New page: left|200px<br /> <applet load="1fha" size="450" color="white" frame="true" align="right" spinBox="true" caption="1fha, resolution 2.4Å" /> '''SOLVING THE STRUCTUR...
 
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[[Image:1fha.gif|left|200px]]<br />
<applet load="1fha" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1fha, resolution 2.4&Aring;" />
'''SOLVING THE STRUCTURE OF HUMAN H FERRITIN BY GENETICALLY ENGINEERING INTERMOLECULAR CRYSTAL CONTACTS'''<br />


==Overview==
==SOLVING THE STRUCTURE OF HUMAN H FERRITIN BY GENETICALLY ENGINEERING INTERMOLECULAR CRYSTAL CONTACTS==
Ferritin is important in iron homeostasis. Its twenty-four chains of two, types, H and L, assemble as a hollow shell providing an iron-storage, cavity. Ferritin molecules in cells containing high levels of iron tend to, be rich in L chains, and may have a long-term storage function, whereas, H-rich ferritins are more active in iron metabolism. The molecular basis, for the greater activity of H-rich ferritins has until now been obscure, largely because the structure of H-chain ferritin has remained unknown, owing to the difficulties in obtaining crystals ordered enough for X-ray, crystallographic analysis. Here we report the three-dimensional structure, of a human ferritin H-chain homopolymer. By genetically engineering a, change in the sequence of the intermolecular contact region, we obtained, crystals isomorphous with the homologous rat L ferritin and of high enough, quality for X-ray diffraction analysis. The X-ray structure of human H, ferritin shows a novel metal site embedded within each of its four-helix, bundles and we suggest that ferroxidase activity associated with this site, accounts for its rapid uptake of iron.
<StructureSection load='1fha' size='340' side='right'caption='[[1fha]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1fha]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The November 2002 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Ferritin and Transferrin''  by David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2002_11 10.2210/rcsb_pdb/mom_2002_11]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FHA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FHA FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1fha FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fha OCA], [https://pdbe.org/1fha PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fha RCSB], [https://www.ebi.ac.uk/pdbsum/1fha PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fha ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FRIH_HUMAN FRIH_HUMAN] Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Has ferroxidase activity. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation. Also plays a role in delivery of iron to cells. Mediates iron uptake in capsule cells of the developing kidney (By similarity).
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fh/1fha_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1fha ConSurf].
<div style="clear:both"></div>


==Disease==
==See Also==
Known diseases associated with this structure: Iron overload, autosomal dominant OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134770 134770]]
*[[Ferritin 3D structures|Ferritin 3D structures]]
 
__TOC__
==About this Structure==
</StructureSection>
1FHA 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 FE and CA as [http://en.wikipedia.org/wiki/ligands ligands]. The following page contains interesting information on the relation of 1FHA with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb35_1.html Ferritin and Transferrin]]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1FHA OCA].
 
==Reference==
Solving the structure of human H ferritin by genetically engineering intermolecular crystal contacts., Lawson DM, Artymiuk PJ, Yewdall SJ, Smith JM, Livingstone JC, Treffry A, Luzzago A, Levi S, Arosio P, Cesareni G, et al., Nature. 1991 Feb 7;349(6309):541-4. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=1992356 1992356]
[[Category: Ferritin and Transferrin]]
[[Category: Ferritin and Transferrin]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Artymiuk, P.J.]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Harrison, P.M.]]
[[Category: Artymiuk PJ]]
[[Category: CA]]
[[Category: Harrison PM]]
[[Category: FE]]
[[Category: iron storage]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 12 16:53:15 2007''

Latest revision as of 10:14, 7 February 2024

SOLVING THE STRUCTURE OF HUMAN H FERRITIN BY GENETICALLY ENGINEERING INTERMOLECULAR CRYSTAL CONTACTSSOLVING THE STRUCTURE OF HUMAN H FERRITIN BY GENETICALLY ENGINEERING INTERMOLECULAR CRYSTAL CONTACTS

Structural highlights

1fha is a 1 chain structure with sequence from Homo sapiens. The November 2002 RCSB PDB Molecule of the Month feature on Ferritin and Transferrin by David S. Goodsell is 10.2210/rcsb_pdb/mom_2002_11. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

FRIH_HUMAN Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Has ferroxidase activity. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation. Also plays a role in delivery of iron to cells. Mediates iron uptake in capsule cells of the developing kidney (By similarity).

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

1fha, resolution 2.40Å

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