6suy

From Proteopedia

Yeast cytochrome c in complex with an octa-anionic calix[4]arene

Structural highlights

6suy is a 2 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.75Å
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CYC1_YEAST Electron carrier protein. The oxidized form of the cytochrome c heme group can accept an electron from the heme group of the cytochrome c1 subunit of cytochrome reductase. Cytochrome c then transfers this electron to the cytochrome oxidase complex, the final protein carrier in the mitochondrial electron-transport chain.

Publication Abstract from PubMed

Sulfonato-calix[n]arenes (sclxn) are promising tools to generate crystalline protein frameworks. We report, for the first time, a lower rim functionalised octa-anionic calix[4]arene (sclx4mc) in complex with proteins. Two crystal structures of sclx4mc bound to yeast or horse heart cytochrome c (cytc) are described. Highly porous honeycomb or tubular assemblies were obtained with yeast or horse cytc, respectively. Related frameworks were obtained previously with sclx8 and sclx6 but not with sclx4, suggesting that the ligand charge is a determining factor.

Probing the determinants of porosity in protein frameworks: co-crystals of cytochrome c and an octa-anionic calix[4]arene.,Alex JM, Brancatelli G, Volpi S, Bonaccorso C, Casnati A, Geremia S, Crowley PB Org Biomol Chem. 2020 Jan 2;18(2):211-214. doi: 10.1039/c9ob02275a. PMID:31808772^[1]

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

References

↑ Alex JM, Brancatelli G, Volpi S, Bonaccorso C, Casnati A, Geremia S, Crowley PB. Probing the determinants of porosity in protein frameworks: co-crystals of cytochrome c and an octa-anionic calix[4]arene. Org Biomol Chem. 2020 Jan 2;18(2):211-214. PMID:31808772 doi:10.1039/c9ob02275a