5fb6

Room-temperature macromolecular crystallography using a micro-patterned silicon chip with minimal background scattering

spinqualitylabelsall models 5fb6, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5fb6 is a 2 chain structure with sequence from Sus scrofa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.901Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function INS_PIG Insulin decreases blood glucose concentration. It increases cell permeability to monosaccharides, amino acids and fatty acids. It accelerates glycolysis, the pentose phosphate cycle, and glycogen synthesis in liver. Publication Abstract from PubMed Recent success at X-ray free-electron lasers has led to serial crystallography experiments staging a comeback at synchrotron sources as well. With crystal lifetimes typically in the millisecond range and the latest-generation detector technologies with high framing rates up to 1 kHz, fast sample exchange has become the bottleneck for such experiments. A micro-patterned chip has been developed from single-crystalline silicon, which acts as a sample holder for up to several thousand microcrystals at a very low background level. The crystals can be easily loaded onto the chip and excess mother liquor can be efficiently removed. Dehydration of the crystals is prevented by keeping them in a stream of humidified air during data collection. Further sealing of the sample holder, for example with Kapton, is not required. Room-temperature data collection from insulin crystals loaded onto the chip proves the applicability of the chip for macromolecular crystallography. Subsequent structure refinements reveal no radiation-damage-induced structural changes for insulin crystals up to a dose of 565.6 kGy, even though the total diffraction power of the crystals has on average decreased to 19.1% of its initial value for the same dose. A decay of the diffracting power by half is observed for a dose of D 1/2 = 147.5 +/- 19.1 kGy, which is about 1/300 of the dose before crystals show a similar decay at cryogenic temperatures. Room-temperature macromolecular crystallography using a micro-patterned silicon chip with minimal background scattering.,Roedig P, Duman R, Sanchez-Weatherby J, Vartiainen I, Burkhardt A, Warmer M, David C, Wagner A, Meents A J Appl Crystallogr. 2016 May 23;49(Pt 3):968-975. eCollection 2016 Jun 1. PMID:27275143 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Insulin 3D Structures

Proteopedia Page Contributors and Editors (what is this?)

OCA