Structural highlights
6ftv is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | , , |
| Gene: | FTH1, FTH, FTHL6, OK/SW-cl.84, PIG15 (HUMAN) |
| Activity: | Ferroxidase, with EC number 1.16.3.1 |
| 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).
Publication Abstract from PubMed
The reaction of the antimetastatic ruthenium(iii) drug NAMI A with human H-chain ferritin (HuHf) was investigated through a variety of biophysical methods. We observed that the addition of HuHf to NAMI A solutions significantly increases the rate of spontaneous NAMI A hydrolysis suggesting the occurrence of a direct metallodrug-protein interaction. The resulting hydrolyzed Ru species binds the protein mostly forming a relatively tight 1 : 1 ruthenium/ferritin (subunit) adduct that was then separated and characterized. Notably, this adduct shows a characteristic CD spectrum in the visible region, which is diagnostic of the existence of at least one protein bound ruthenium center. The crystal structure of this NAMI A/HuHf adduct was subsequently solved at 1.58 A resolution; clear evidence is given for the selective binding of a single Ru ion to His105 of each subunit with concomitant release of all other original Ru ligands in agreement with previous observations. We also noted that NAMI A produces a partial inhibition of HuHf ferroxidase activity. The implications of the above results are discussed.
The NAMI A - human ferritin system: a biophysical characterization.,Ciambellotti S, Pratesi A, Severi M, Ferraro G, Alessio E, Merlino A, Messori L Dalton Trans. 2018 Jul 31. doi: 10.1039/c8dt00860d. PMID:30063237[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Ciambellotti S, Pratesi A, Severi M, Ferraro G, Alessio E, Merlino A, Messori L. The NAMI A - human ferritin system: a biophysical characterization. Dalton Trans. 2018 Jul 31. doi: 10.1039/c8dt00860d. PMID:30063237 doi:http://dx.doi.org/10.1039/c8dt00860d
