6KZY

Cu(II) loaded Tegillarca granosa ferritin

PDB DOI: https://doi.org/10.2210/pdb6KZY/pdb

Classification: OXIDOREDUCTASE
Organism(s): Tegillarca granosa
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2019-09-25 Released: 2019-11-06
Deposition Author(s): Jiang, Q.Q., Su, X.R., Ming, T.H., Huan, H.S.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.30 Å
R-Value Free: 0.195
R-Value Work: 0.152
R-Value Observed: 0.154

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

Literature

Structural Insights Into the Effects of Interactions With Iron and Copper Ions on Ferritin From the Blood Clam Tegillarca granosa.

Ming, T.H., Jiang, Q.Q., Huo, C., Huan, H.S., Wu, Y., Su, C., Qiu, X., Lu, C., Zhou, J., Li, Y., Han, J., Zhang, Z., Su, X.R.

(2022) Front Mol Biosci 9: 800008-800008

PubMed: 35359603 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.3389/fmolb.2022.800008
Primary Citation of Related Structures:
6KZY, 6L55, 6L56, 6L58

PubMed Abstract:
In addition to its role as an iron storage protein, ferritin can function as a major detoxification component in the innate immune defense, and Cu ²⁺ ions can also play crucial antibacterial roles in the blood clam, Tegillarca granosa . However, the mechanism of interaction between iron and copper in recombinant Tegillarca granosa ferritin (TgFer) remains to be investigated. In this study, we investigated the crystal structure of TgFer and examined the effects of Fe ²⁺ and Cu ²⁺ ions on the TgFer structure and catalytic activity. The crystal structure revealed that TgFer presented a typically 4-3-2 symmetry in a cage-like, spherical shell composed of 24 identical subunits, featuring highly conserved organization in both the ferroxidase center and the 3-fold channel. Structural and biochemical analyses indicated that the 4-fold channel of TgFer could be serviced as potential binding sites of metal ions. Cu ²⁺ ions appear to bind preferentially with the 3-fold channel as well as ferroxidase site over Fe ²⁺ ions, possibly inhibiting the ferroxidase activity of TgFer. Our results present a structural and functional characterization of TgFer, providing mechanistic insight into the interactions between TgFer and both Fe ²⁺ and Cu ²⁺ ions.

Organizational Affiliation

State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China.

Macromolecule Content

Total Structure Weight: 81.8 kDa
Atom Count: 6,025
Modelled Residue Count: 673
Deposited Residue Count: 688
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ferritin	A, B, C, D	172	Tegillarca granosa	Mutation(s): 0 EC: 1.16.3.1
UniProt
Find proteins for D3JCC5 (Tegillarca granosa) Explore D3JCC5 Go to UniProtKB: D3JCC5
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	D3JCC5
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
TRS Query on TRS Download Ideal Coordinates CCD File SDF format, chain O [auth A] MOL2 format, chain O [auth A]	O [auth A]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C₄ H₁₂ N O₃ LENZDBCJOHFCAS-UHFFFAOYSA-O		Interactions Focus chain O [auth A] Interactions & Density Focus chain O [auth A]
CU (Subject of Investigation/LOI) Query on CU Download Ideal Coordinates CCD File SDF format, chain DA [auth C] SDF format, chain E [auth A] SDF format, chain EA [auth C] SDF format, chain F [auth A] SDF format, chain FA [auth C] SDF format, chain P [auth B] SDF format, chain Q [auth B] SDF format, chain QA [auth D] MOL2 format, chain DA [auth C] MOL2 format, chain E [auth A] MOL2 format, chain EA [auth C] MOL2 format, chain F [auth A] MOL2 format, chain FA [auth C] MOL2 format, chain P [auth B] MOL2 format, chain Q [auth B] MOL2 format, chain QA [auth D]	DA [auth C] E [auth A] EA [auth C] F [auth A] FA [auth C] DA [auth C], E [auth A], EA [auth C], F [auth A], FA [auth C], P [auth B], Q [auth B], QA [auth D]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N		Interactions Focus chain DA [auth C] Focus chain E [auth A] Focus chain EA [auth C] Focus chain F [auth A] Focus chain FA [auth C] Focus chain P [auth B] Focus chain Q [auth B] Focus chain QA [auth D] Interactions & Density Focus chain DA [auth C] Focus chain E [auth A] Focus chain EA [auth C] Focus chain F [auth A] Focus chain FA [auth C] Focus chain P [auth B] Focus chain Q [auth B] Focus chain QA [auth D]
IPA Query on IPA Download Ideal Coordinates CCD File SDF format, chain BB [auth D] SDF format, chain CA [auth B] SDF format, chain N [auth A] SDF format, chain PA [auth C] MOL2 format, chain BB [auth D] MOL2 format, chain CA [auth B] MOL2 format, chain N [auth A] MOL2 format, chain PA [auth C]	BB [auth D], CA [auth B], N [auth A], PA [auth C]	ISOPROPYL ALCOHOL C₃ H₈ O KFZMGEQAYNKOFK-UHFFFAOYSA-N		Interactions Focus chain BB [auth D] Focus chain CA [auth B] Focus chain N [auth A] Focus chain PA [auth C] Interactions & Density Focus chain BB [auth D] Focus chain CA [auth B] Focus chain N [auth A] Focus chain PA [auth C]
NA Query on NA Download Ideal Coordinates CCD File SDF format, chain AA [auth B] SDF format, chain AB [auth D] SDF format, chain BA [auth B] SDF format, chain G [auth A] SDF format, chain GA [auth C] SDF format, chain H [auth A] SDF format, chain HA [auth C] SDF format, chain I [auth A] SDF format, chain IA [auth C] SDF format, chain J [auth A] SDF format, chain JA [auth C] SDF format, chain K [auth A] SDF format, chain KA [auth C] SDF format, chain L [auth A] SDF format, chain LA [auth C] SDF format, chain M [auth A] SDF format, chain MA [auth C] SDF format, chain NA [auth C] SDF format, chain OA [auth C] SDF format, chain R [auth B] SDF format, chain RA [auth D] SDF format, chain S [auth B] SDF format, chain SA [auth D] SDF format, chain T [auth B] SDF format, chain TA [auth D] SDF format, chain U [auth B] SDF format, chain UA [auth D] SDF format, chain V [auth B] SDF format, chain VA [auth D] SDF format, chain W [auth B] SDF format, chain WA [auth D] SDF format, chain X [auth B] SDF format, chain XA [auth D] SDF format, chain Y [auth B] SDF format, chain YA [auth D] SDF format, chain Z [auth B] SDF format, chain ZA [auth D] MOL2 format, chain AA [auth B] MOL2 format, chain AB [auth D] MOL2 format, chain BA [auth B] MOL2 format, chain G [auth A] MOL2 format, chain GA [auth C] MOL2 format, chain H [auth A] MOL2 format, chain HA [auth C] MOL2 format, chain I [auth A] MOL2 format, chain IA [auth C] MOL2 format, chain J [auth A] MOL2 format, chain JA [auth C] MOL2 format, chain K [auth A] MOL2 format, chain KA [auth C] MOL2 format, chain L [auth A] MOL2 format, chain LA [auth C] MOL2 format, chain M [auth A] MOL2 format, chain MA [auth C] MOL2 format, chain NA [auth C] MOL2 format, chain OA [auth C] MOL2 format, chain R [auth B] MOL2 format, chain RA [auth D] MOL2 format, chain S [auth B] MOL2 format, chain SA [auth D] MOL2 format, chain T [auth B] MOL2 format, chain TA [auth D] MOL2 format, chain U [auth B] MOL2 format, chain UA [auth D] MOL2 format, chain V [auth B] MOL2 format, chain VA [auth D] MOL2 format, chain W [auth B] MOL2 format, chain WA [auth D] MOL2 format, chain X [auth B] MOL2 format, chain XA [auth D] MOL2 format, chain Y [auth B] MOL2 format, chain YA [auth D] MOL2 format, chain Z [auth B] MOL2 format, chain ZA [auth D]	AA [auth B] AB [auth D] BA [auth B] G [auth A] GA [auth C] AA [auth B], AB [auth D], BA [auth B], G [auth A], GA [auth C], H [auth A], HA [auth C], I [auth A], IA [auth C], J [auth A], JA [auth C], K [auth A], KA [auth C], L [auth A], LA [auth C], M [auth A], MA [auth C], NA [auth C], OA [auth C], R [auth B], RA [auth D], S [auth B], SA [auth D], T [auth B], TA [auth D], U [auth B], UA [auth D], V [auth B], VA [auth D], W [auth B], WA [auth D], X [auth B], XA [auth D], Y [auth B], YA [auth D], Z [auth B], ZA [auth D]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N		Interactions Focus chain AA [auth B] Focus chain AB [auth D] Focus chain BA [auth B] Focus chain G [auth A] Focus chain GA [auth C] Focus chain H [auth A] Focus chain HA [auth C] Focus chain I [auth A] Focus chain IA [auth C] Focus chain J [auth A] Focus chain JA [auth C] Focus chain K [auth A] Focus chain KA [auth C] Focus chain L [auth A] Focus chain LA [auth C] Focus chain M [auth A] Focus chain MA [auth C] Focus chain NA [auth C] Focus chain OA [auth C] Focus chain R [auth B] Focus chain RA [auth D] Focus chain S [auth B] Focus chain SA [auth D] Focus chain T [auth B] Focus chain TA [auth D] Focus chain U [auth B] Focus chain UA [auth D] Focus chain V [auth B] Focus chain VA [auth D] Focus chain W [auth B] Focus chain WA [auth D] Focus chain X [auth B] Focus chain XA [auth D] Focus chain Y [auth B] Focus chain YA [auth D] Focus chain Z [auth B] Focus chain ZA [auth D] Interactions & Density Focus chain AA [auth B] Focus chain AB [auth D] Focus chain BA [auth B] Focus chain G [auth A] Focus chain GA [auth C] Focus chain H [auth A] Focus chain HA [auth C] Focus chain I [auth A] Focus chain IA [auth C] Focus chain J [auth A] Focus chain JA [auth C] Focus chain K [auth A] Focus chain KA [auth C] Focus chain L [auth A] Focus chain LA [auth C] Focus chain M [auth A] Focus chain MA [auth C] Focus chain NA [auth C] Focus chain OA [auth C] Focus chain R [auth B] Focus chain RA [auth D] Focus chain S [auth B] Focus chain SA [auth D] Focus chain T [auth B] Focus chain TA [auth D] Focus chain U [auth B] Focus chain UA [auth D] Focus chain V [auth B] Focus chain VA [auth D] Focus chain W [auth B] Focus chain WA [auth D] Focus chain X [auth B] Focus chain XA [auth D] Focus chain Y [auth B] Focus chain YA [auth D] Focus chain Z [auth B] Focus chain ZA [auth D]