1z6o

From Proteopedia

(Difference between revisions)

Revision as of 07:04, 23 August 2023

Crystal Structure of Trichoplusia ni secreted ferritin

Structural highlights

1z6o is a 24 chain structure with sequence from Trichoplusia ni. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.91Å
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q52SA8_TRINI Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation (By similarity).[RuleBase:RU361145]

Evolutionary Conservation

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

Publication Abstract from PubMed

Ferritins are iron storage proteins made of 24 subunits forming a hollow spherical shell. Vertebrate ferritins contain varying ratios of heavy (H) and light (L) chains; however, known ferritin structures include only one type of chain and have octahedral symmetry. Here, we report the 1.9A structure of a secreted insect ferritin from Trichoplusia ni, which reveals equal numbers of H and L chains arranged with tetrahedral symmetry. The H/L-chain interface includes complementary features responsible for ordered assembly of the subunits. The H chain contains a ferroxidase active site resembling that of vertebrate H chains with an endogenous, bound iron atom. The L chain lacks the residues that form a putative iron core nucleation site in vertebrate L chains. Instead, a possible nucleation site is observed at the L chain 3-fold pore. The structure also reveals inter- and intrasubunit disulfide bonds, mostly in the extended N-terminal regions unique to insect ferritins. The symmetrical arrangement of H and L chains and the disulfide crosslinks reflect adaptations of insect ferritin to its role as a secreted protein.

Crystal structure of a secreted insect ferritin reveals a symmetrical arrangement of heavy and light chains.,Hamburger AE, West AP Jr, Hamburger ZA, Hamburger P, Bjorkman PJ J Mol Biol. 2005 Jun 10;349(3):558-69. Epub 2005 Apr 12. PMID:15896348^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Hamburger AE, West AP Jr, Hamburger ZA, Hamburger P, Bjorkman PJ. Crystal structure of a secreted insect ferritin reveals a symmetrical arrangement of heavy and light chains. J Mol Biol. 2005 Jun 10;349(3):558-69. Epub 2005 Apr 12. PMID:15896348 doi:10.1016/j.jmb.2005.03.074

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1z6o"

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1z6o]] is a 24 chain structure with sequence from [https://en.wikipedia.org/wiki/Trichoplusia_ni Trichoplusia ni]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Z6O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Z6O FirstGlance]. <br>
-</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>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.91&#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=1z6o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1z6o OCA], [https://pdbe.org/1z6o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1z6o RCSB], [https://www.ebi.ac.uk/pdbsum/1z6o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1z6o ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/Q52SA8_TRINI Q52SA8_TRINI]] Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation (By similarity).[RuleBase:RU361145] [[https://www.uniprot.org/uniprot/Q52SA9_TRINI Q52SA9_TRINI]] Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation (By similarity).[RuleBase:RU361145]
+[https://www.uniprot.org/uniprot/Q52SA8_TRINI Q52SA8_TRINI] Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation (By similarity).[RuleBase:RU361145]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 37: / Line 38: @@
 [[Category: Large Structures]]
 [[Category: Trichoplusia ni]]
-[[Category: Bjorkman, P J]]
+[[Category: Bjorkman PJ]]
-[[Category: Hamburger, A E]]
+[[Category: Hamburger AE]]
-[[Category: Hamburger, P]]
+[[Category: Hamburger P]]
-[[Category: Hamburger, Z A]]
+[[Category: Hamburger ZA]]
-[[Category: West, A P]]
+[[Category: West Jr AP]]
-[[Category: Iron storage]]
-[[Category: Metal binding protein]]

1z6o

From Proteopedia

Revision as of 07:04, 23 August 2023

Crystal Structure of Trichoplusia ni secreted ferritin

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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