5vra

2.35-Angstrom In situ Mylar structure of human A2A adenosine receptor at 100 K

spinqualitylabelsall models 5vra, resolution 2.35Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5vra is a 1 chain structure with sequence from Escherichia coli and Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.35Å Ligands: CLR, NA, OLA, OLB, OLC, ZMA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function AA2AR_HUMAN Receptor for adenosine. The activity of this receptor is mediated by G proteins which activate adenylyl cyclase.C562_ECOLX Electron-transport protein of unknown function. Publication Abstract from PubMed Protein crystallography has significantly advanced in recent years, with in situ data collection, in which crystals are placed in the X-ray beam within their growth medium, being a major point of focus. In situ methods eliminate the need to harvest crystals, a previously unavoidable drawback, particularly for often small membrane-protein crystals. Here, we present a protocol for the high-throughput in situ X-ray screening of and data collection from soluble and membrane-protein crystals at room temperature (20-25 degrees C) and under cryogenic conditions. The Mylar in situ method uses Mylar-based film sandwich plates that are inexpensive, easy to make, and compatible with automated imaging, and that show very low background scattering. They support crystallization in microbatch and vapor-diffusion modes, as well as in lipidic cubic phases (LCPs). A set of 3D-printed holders for differently sized patches of Mylar sandwich films makes the method robust and versatile, allows for storage and shipping of crystals, and enables automated mounting at synchrotrons, as well as goniometer-based screening and data collection. The protocol covers preparation of in situ plates and setup of crystallization trials; 3D printing and assembly of holders; opening of plates, isolation of film patches containing crystals, and loading them onto holders; basic screening and data-collection guidelines; and unloading of holders, as well as reuse and recycling of them. In situ plates are prepared and assembled in 1 h; holders are 3D-printed and assembled in </=90 min; and an in situ plate is opened, and a film patch containing crystals is isolated and loaded onto a holder in 5 min. High-throughput in situ X-ray screening of and data collection from protein crystals at room temperature and under cryogenic conditions.,Broecker J, Morizumi T, Ou WL, Klingel V, Kuo A, Kissick DJ, Ishchenko A, Lee MY, Xu S, Makarov O, Cherezov V, Ogata CM, Ernst OP Nat Protoc. 2018 Feb;13(2):260-292. doi: 10.1038/nprot.2017.135. Epub 2018 Jan 4. PMID:29300389 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Adenosine A2A receptor 3D structures

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