Structural highlights
4xva is a 4 chain structure with sequence from Baker's yeast. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | , |
| Related: | 4xv4, 4xv5, 4xv6, 4xv7, 4xv8 |
| Gene: | CCP1, CCP, CPO, YKR066C (Baker's yeast) |
| Activity: | Cytochrome-c peroxidase, with EC number 1.11.1.5 |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
[CCPR_YEAST] Destroys radicals which are normally produced within the cells and which are toxic to biological systems.
Publication Abstract from PubMed
Interrogating fragment libraries by X-ray crystallography is a powerful strategy for discovering allosteric ligands for protein targets. Cryocooling of crystals should theoretically increase the fraction of occupied binding sites and decrease radiation damage. However, it might also perturb protein conformations that can be accessed at room temperature. Using data from crystals measured consecutively at room temperature and at cryogenic temperature, we found that transient binding sites could be abolished at the cryogenic temperatures employed by standard approaches. Changing the temperature at which the crystallographic data was collected could provide a deliberate perturbation to the equilibrium of protein conformations and help to visualize hidden sites with great potential to allosterically modulate protein function.
One Crystal, Two Temperatures: Cryocooling Penalties Alter Ligand Binding to Transient Protein Sites.,Fischer M, Shoichet BK, Fraser JS Chembiochem. 2015 May 28. doi: 10.1002/cbic.201500196. PMID:26032594[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Fischer M, Shoichet BK, Fraser JS. One Crystal, Two Temperatures: Cryocooling Penalties Alter Ligand Binding to Transient Protein Sites. Chembiochem. 2015 May 28. doi: 10.1002/cbic.201500196. PMID:26032594 doi:http://dx.doi.org/10.1002/cbic.201500196
