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Title: A Simple Technique to Improve Microcrystals Using Gel Exclusion of Nucleation Inducing Elements

Journal Article · · Crystals
DOI:https://doi.org/10.3390/cryst8120464· OSTI ID:1502804
 [1]; ORCiD logo [2];  [3]; ORCiD logo [4]; ORCiD logo [5];  [6];  [7]; ORCiD logo [7];  [7]; ORCiD logo [7]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States); State Univ. of New York, Old Westbury, NY (United States)
  3. Brookhaven National Laboratory (BNL), Upton, NY (United States); College of William and Mary, Williamsburg, VA (United States)
  4. Brookhaven National Laboratory (BNL), Upton, NY (United States); General Douglas MacArthur High School, Levittown, NY (United States)
  5. Brookhaven National Laboratory (BNL), Upton, NY (United States); Ross School, East Hampton, NY (United States)
  6. Brookhaven National Laboratory (BNL), Upton, NY (United States); Shoreham-Wading River High School, Shoreham, NY (United States)
  7. Brookhaven National Laboratory (BNL), Upton, NY (United States)

A technique is described for generating large well diffracting crystals from conditions that yield microcrystals. Crystallization using this technique is both rapid (crystals appear in <1 h) and robust (48 out of 48 co-crystallized with a fragment library, compared with 26 out of 48 using conventional hanging drop). Agarose gel is used to exclude nucleation inducing elements from the remaining crystallization cocktail. The chemicals in the crystallization cocktail are partitioned into high concentration components (presumed to induce aggregation by reducing water activity) and low concentration nucleation agents (presumed to induce nucleation through direct interaction). The nucleation agents are then combined with 2% agarose gel and deposited on the crystallization shelf of a conventional vapor diffusion plate. The remaining components are mixed with the protein and placed in contact with the agarose drop. This technique yielded well diffracting crystals of lysozyme, cubic insulin, proteinase k, and ferritin (ferritin crystals diffracted to 1.43 Å). The crystals grew rapidly, reaching large size in less than one hour (maximum size was achieved in 1–12 h). This technique is not suitable for poorly expressing proteins because small protein volumes diffuse out of the agarose gel too quickly. Nonetheless, it is a useful technique for situations where crystals must grow rapidly (such as educational applications and preparation of beamline test specimens) and in situations where crystals must grow robustly (such as co-crystallization with a fragment library).

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1502804
Report Number(s):
BNL-211432-2019-JAAM
Journal Information:
Crystals, Vol. 8, Issue 12; ISSN 2073-4352
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (33)

A novel dialysis procedure for the crystallization of proteins journal January 1989
High throughput screening using acoustic droplet ejection to combine protein crystals and chemical libraries on crystallization plates at high density journal July 2015
Automated Protocols for Macromolecular Crystallization at the MRC Laboratory of Molecular Biology journal January 2018
Overview of the CCP 4 suite and current developments journal March 2011
Novel Protein Crystal Growth Electrochemical Cell For Applications In X-ray Diffraction and Atomic Force Microscopy journal September 2011
Ferritin: A Versatile Building Block for Bionanotechnology journal January 2015
Selective Oxidation of Methionine and Tryptophan Residues in a Therapeutic IgG1 Molecule journal September 2015
Coot model-building tools for molecular graphics journal November 2004
What’s happened over the last five years with high-throughput protein crystallization screening? journal April 2018
X-ray diffraction measurement of cosolvent accessible volume in rhombohedral insulin crystals journal December 2017
From screen to structure with a harvestable microfluidic device journal July 2011
Hitting the target: fragment screening with acoustic in situ co-crystallization of proteins plus fragment libraries on pin-mounted data-collection micromeshes journal April 2014
Acoustic Methods to Monitor Protein Crystallization and to Detect Protein Crystals in Suspensions of Agarose and Lipidic Cubic Phase journal February 2016
Crystal growth in gels: Principle and applications journal July 1988
Macromolecular crystallization in microgravity journal March 2005
Protein crystal growth in gels and stationary magnetic fields journal March 2007
Macromolecular TLS Refinement in REFMAC at Moderate Resolutions book January 2003
A simple technique to reduce evaporation of crystallization droplets by using plate lids with apertures for adding liquids journal November 2014
Absorption of x-radiation by single crystals of proteins containing labile metal components: the determination of the number of iron atoms within the central core of ferritin journal April 1985
Phagocytes, Immunology and Inflammation journal March 2002
A Linear Relationship between Crystal Size and Fragment Binding Time Observed Crystallographically: Implications for Fragment Library Screening Using Acoustic Droplet Ejection journal July 2014
Unity in the Biochemistry of the Iron-Storage Proteins Ferritin and Bacterioferritin journal November 2014
Ferritin, iron homeostasis, and oxidative damage1,2 1Guest Editor: Mario Comporti 2This article is part of a series of reviews on “Iron and Cellular Redox Status.” The full list of papers may be found on the homepage of the journal. journal August 2002
Crystallization of protein–ligand complexes journal December 2006
Ferritin, cellular iron storage and regulation: FERRITIN AND IRON STORAGE journal March 2017
Application of gel growth to hanging drop technique journal March 1991
XDS journal January 2010
Screening of Nucleation Conditions Using Levitated Drops for Protein Crystallization journal April 2003
A free interface diffusion technique for the crystallization of proteins for X-ray crystallography journal August 1972
Automated refinement of protein models journal January 1993
Soaking suggests “alternative facts”: Only co-crystallization discloses major ligand-induced interface rearrangements of a homodimeric tRNA-binding protein indicating a novel mode-of-inhibition journal April 2017
On the limited ability of superoxide to release iron from ferritin journal November 1990
Chaperone salts, polyethylene glycol and rates of equilibration in vapor-diffusion crystallization journal September 1995

Cited By (2)

Crystal Structure of Chaperonin GroEL from Xanthomonas oryzae pv. oryzae journal August 2019
Biological Crystallization journal August 2019