6p5f

From Proteopedia

Photoactive Yellow Protein PYP Pure Dark

Structural highlights

6p5f is a 1 chain structure with sequence from Halorhodospira halophila. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.7Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PYP_HALHA Photoactive blue light protein. Probably functions as a photoreceptor for a negative phototaxis response.

Publication Abstract from PubMed

The European XFEL (EuXFEL) is a 3.4-km long X-ray source, which produces femtosecond, ultrabrilliant and spatially coherent X-ray pulses at megahertz (MHz) repetition rates. This X-ray source has been designed to enable the observation of ultrafast processes with near-atomic spatial resolution. Time-resolved crystallographic investigations on biological macromolecules belong to an important class of experiments that explore fundamental and functional structural displacements in these molecules. Due to the unusual MHz X-ray pulse structure at the EuXFEL, these experiments are challenging. Here, we demonstrate how a biological reaction can be followed on ultrafast timescales at the EuXFEL. We investigate the picosecond time range in the photocycle of photoactive yellow protein (PYP) with MHz X-ray pulse rates. We show that difference electron density maps of excellent quality can be obtained. The results connect the previously explored femtosecond PYP dynamics to timescales accessible at synchrotrons. This opens the door to a wide range of time-resolved studies at the EuXFEL.

Time-resolved serial femtosecond crystallography at the European XFEL.,Pandey S, Bean R, Sato T, Poudyal I, Bielecki J, Cruz Villarreal J, Yefanov O, Mariani V, White TA, Kupitz C, Hunter M, Abdellatif MH, Bajt S, Bondar V, Echelmeier A, Doppler D, Emons M, Frank M, Fromme R, Gevorkov Y, Giovanetti G, Jiang M, Kim D, Kim Y, Kirkwood H, Klimovskaia A, Knoska J, Koua FHM, Letrun R, Lisova S, Maia L, Mazalova V, Meza D, Michelat T, Ourmazd A, Palmer G, Ramilli M, Schubert R, Schwander P, Silenzi A, Sztuk-Dambietz J, Tolstikova A, Chapman HN, Ros A, Barty A, Fromme P, Mancuso AP, Schmidt M Nat Methods. 2019 Nov 18. pii: 10.1038/s41592-019-0628-z. doi:, 10.1038/s41592-019-0628-z. PMID:31740816^[1]

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

References

↑ Pandey S, Bean R, Sato T, Poudyal I, Bielecki J, Cruz Villarreal J, Yefanov O, Mariani V, White TA, Kupitz C, Hunter M, Abdellatif MH, Bajt S, Bondar V, Echelmeier A, Doppler D, Emons M, Frank M, Fromme R, Gevorkov Y, Giovanetti G, Jiang M, Kim D, Kim Y, Kirkwood H, Klimovskaia A, Knoska J, Koua FHM, Letrun R, Lisova S, Maia L, Mazalova V, Meza D, Michelat T, Ourmazd A, Palmer G, Ramilli M, Schubert R, Schwander P, Silenzi A, Sztuk-Dambietz J, Tolstikova A, Chapman HN, Ros A, Barty A, Fromme P, Mancuso AP, Schmidt M. Time-resolved serial femtosecond crystallography at the European XFEL. Nat Methods. 2019 Nov 18. pii: 10.1038/s41592-019-0628-z. doi:, 10.1038/s41592-019-0628-z. PMID:31740816 doi:http://dx.doi.org/10.1038/s41592-019-0628-z