7NJJ

Proteinase K grown inside HARE serial crystallography chip


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

A simple vapor-diffusion method enables protein crystallization inside the HARE serial crystallography chip.

Norton-Baker, B.Mehrabi, P.Boger, J.Schonherr, R.von Stetten, D.Schikora, H.Kwok, A.O.Martin, R.W.Miller, R.J.D.Redecke, L.Schulz, E.C.

(2021) Acta Crystallogr D Struct Biol 77: 820-834

  • DOI: 10.1107/S2059798321003855
  • Primary Citation of Related Structures:  
    7NJE, 7NJF, 7NJG, 7NJH, 7NJI, 7NJJ, 7NKF

  • PubMed Abstract: 
  • Fixed-target serial crystallography has become an important method for the study of protein structure and dynamics at synchrotrons and X-ray free-electron lasers. However, sample homogeneity, consumption and the physical stress on samples remain major challenges for these high-throughput experiments, which depend on high-quality protein microcrystals ...

    Fixed-target serial crystallography has become an important method for the study of protein structure and dynamics at synchrotrons and X-ray free-electron lasers. However, sample homogeneity, consumption and the physical stress on samples remain major challenges for these high-throughput experiments, which depend on high-quality protein microcrystals. The batch crystallization procedures that are typically applied require time- and sample-intensive screening and optimization. Here, a simple protein crystallization method inside the features of the HARE serial crystallography chips is reported that circumvents batch crystallization and allows the direct transfer of canonical vapor-diffusion conditions to in-chip crystallization. Based on conventional hanging-drop vapor-diffusion experiments, the crystallization solution is distributed into the wells of the HARE chip and equilibrated against a reservoir with mother liquor. Using this simple method, high-quality microcrystals were generated with sufficient density for the structure determination of four different proteins. A new protein variant was crystallized using the protein concentrations encountered during canonical crystallization experiments, enabling structure determination from ∼55 µg of protein. Additionally, structure determination from intracellular crystals grown in insect cells cultured directly in the features of the HARE chips is demonstrated. In cellulo crystallization represents a comparatively unexplored space in crystallization, especially for proteins that are resistant to crystallization using conventional techniques, and eliminates any need for laborious protein purification. This in-chip technique avoids harvesting the sensitive crystals or any further physical handling of the crystal-containing cells. These proof-of-principle experiments indicate the potential of this method to become a simple alternative to batch crystallization approaches and also as a convenient extension to canonical crystallization screens.


    Organizational Affiliation

    Department for Atomically Resolved Dynamics, Max-Planck-Institute for Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Proteinase KA279Parengyodontium albumMutation(s): 0 
Gene Names: PROK
EC: 3.4.21.64
UniProt
Find proteins for P06873 (Parengyodontium album)
Explore P06873 
Go to UniProtKB:  P06873
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06873
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NO3
Query on NO3

Download Ideal Coordinates CCD File 
B [auth A]NITRATE ION
N O3
NHNBFGGVMKEFGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.5α = 90
b = 68.5β = 90
c = 108.65γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
CrystFELdata reduction
CrystFELdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-06-16
    Type: Initial release