7jgq

From Proteopedia

Crystal Structure of the Ni-bound Human Heavy-chain variant 122H-delta C-star with 2,5-furandihyrdoxamate collected at 278K after one heating/cooling cycle

Structural highlights

7jgq is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3.01Å
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).

Publication Abstract from PubMed

We recently introduced protein-metal-organic frameworks (protein-MOFs) as chemically designed protein crystals, composed of ferritin nodes that predictably assemble into 3D lattices upon coordination of various metal ions and ditopic, hydroxamate-based linkers. Owing to their unique tripartite construction, protein-MOFs possess extremely sparse lattice connectivity, suggesting that they might display unusual thermomechanical properties. Leveraging the synthetic modularity of ferritin-MOFs, we investigated the temperature-dependent structural dynamics of six distinct frameworks. Our results show that the thermostabilities of ferritin-MOFs can be tuned through the metal component or the presence of crowding agents. Our studies also reveal a framework that undergoes a reversible and isotropic first-order phase transition near-room temperature, corresponding to a 4% volumetric change within 1 degrees C and a hysteresis window of approximately 10 degrees C. This highly cooperative crystal-to-crystal transformation, which stems from the soft crystallinity of ferritin-MOFs, illustrates the advantage of modular construction strategies in discovering tunable-and unpredictable-material properties.

Tunable and Cooperative Thermomechanical Properties of Protein-Metal-Organic Frameworks.,Bailey JB, Tezcan FA J Am Chem Soc. 2020 Oct 5. doi: 10.1021/jacs.0c07835. PMID:32972136^[1]

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

References

↑ Bailey JB, Tezcan FA. Tunable and Cooperative Thermomechanical Properties of Protein-Metal-Organic Frameworks. J Am Chem Soc. 2020 Oct 5. doi: 10.1021/jacs.0c07835. PMID:32972136 doi:http://dx.doi.org/10.1021/jacs.0c07835