Hampton GRAS 3 • GRAS 4 Screens

Hampton GRAS 3 • GRAS 4 Screens

Applications

a.GRAS reagent crystallization screen for proteins, including monoclonal antibodies, where Salt is the primary, and Polyethylene glycol the secondary reagent, sampling pH 4-9

b.Identify GRAS based reagents that promote crystallization of biotherapeutics for bioprocess, bioformulation, and continuous flow manufacturing applications

Features

Developed at Hampton Research
Generally Recognized As Safe reagent formulation
Samples pH 4.0 – 9.0 without an added buffer
Primary crystallization reagent:

24 unique Salts

 

Secondary crystallization reagent:

GRAS Screen 3: PEG 300, 400, MME 550, & 600
GRAS Screen 4: PEG 1,000, MME 2,000, 3,350 & 4,000

 

Compatible with Vapor diffusion, microbatch, free interface diffusion
Reagents soluble between 4°C and 30°C

 Description
GRAS Screen™ 3 and GRAS Screen™ 4 were developed by Hampton Research for the crystallization of proteins, including monoclonal antibodies. Each of the chemicals in GRAS Screen 3 and 4 have been used under one or more of the following categories. As (1) a Generally Recognized As Safe (GRAS) substance, (2) a pharmaceutical excipient, (3) a normal physiological constituent, (4) a metabolic byproduct, and/or (5) a Everything Added to Food in the United States (EAFUS) substance.

GRAS Screen 3 samples twenty four salts, encompassing pH 4-9 versus four low molecular weight Polyethylene glycols (300, 400, MME 550, & 600). GRAS Screen 3 is supplied in a 96 Deep Well block format and is compatible with robotic and multi-channel pipet liquid handling systems. GRAS Screen 3 is compatible with vapor diffusion, free interface diffusion, and microbatch crystallization methods. For research use only.

GRAS Screen 4 samples twenty four salts, encompassing pH 4-9 versus four medium molecular weight Polyethylene glycols (1,000, MME 2,000, 3,350 & 4,000). GRAS Screen 4 is supplied in a 96 Deep Well block format and is compatible with robotic and multi-channel pipet liquid handling systems. GRAS Screen 4 is compatible with vapor diffusion, free interface diffusion, and microbatch crystallization methods. For research use only.

 

CAT NO NAME DESCRIPTION
HR2-453 GRAS Screen 3 1 ml, Deep Well block format
HR2-454 GRAS Screen 4 1 ml, Deep Well block format

Hampton 蛋白结晶向导管Wizard Tube

Wizard Tube 
The Wizard™ Classic line of random sparse matrix screens is designed to increase your probability of producing crystals during the coarse screening phase when crystallizing biological macromolecules (proteins, nucleic acids, peptides, and combinations thereof).
The Wizard Classic reagents are proven to be a highly effective starting point in the screening of biological macromolecules. The Wizard Classic formulations include a large range of crystallants, buffers, and salts covering a broad range of crystallization space at pH levels from pH 4.5 to pH 10.5.Choose from Wizard Classic 1, 2, 3, or 4 non-overlapping formulations in matrix blocks or tubes.

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Wizard Cubic LCP
The tools in the Wizard Cubic LCP (lipidic cubic phase) Kit enable researchers to prepare LCP-type crystallizations by hand. Ideal for low-protein experiments: effective protein volume for a single crystallization experiment is about 80 nanoliters. Wizard Cubic LCP Kit tools work especially well when traditional methods have failed to yield crystals. Lipidic cubic phase has worked well for the crystallization of 7TM membrane proteins (proteins with seven transmembrane helices). Four out of six GPCRs (G-protein coupled receptors), an important membrane protein class, and several microbial 7TM proteins have been crystallized using the LCP approach.

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CRYO (I、II)
The Wizard Cryo™ line of random sparse matrix screens is designed for scientists who want to avoid the additional step of optimizing a cryoprotectant condition. Every Wizard Cryo formulation flash-freezes to a clear, amorphous glass in liquid nitrogen or in a cryo-stream at 100K. Crystals can be frozen directly from their growth drops, avoiding the additional step of pre-equilibration with an artificial cryo-condition that can damage the crystal. Eleven different cryocrystallants and sparing use of glycerol ensures a broad sampling of possible cryo conditions. Choose from Wizard Cryo 1 or 2 formulations in tubes or Wizard Cryo 1 and 2 together in a 96-well matrix block.

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Hampton PEGRx 聚乙二醇结晶试剂盒

Hampton PEGRx

PEGRx 1 • PEGRx 2 • PEGRx HT

Applications   主要是调节样本的PH值

  Primary and secondary, polymer and pH based crystallization screen for biological macromolecules

PEGRx is a primary and secondary, polymer and pH based crystallization screen developed at Hampton Research. It is designed to evaluate polymer based crystallization reagents and pH in low (PEGRx 1) to medium ionic strength (PEGRx 2). It is also designed for use as a secondary or optimization screen to follow the Hampton Research Index screen when polymer based reagents produce hits and interesting solubility leads.PEGRx 1 is a crystallization reagent kit designed to evaluate an array of polymers of varying molecular weight in a low ionic strength environment versus a wide range of pH. Polymer reagents include Polyethylene glycols, Polyethylene glycol monomethyl ethers, and Jeffamines®. The molecular weight range between 200 and 20,000 is evaluated in a low ionic strength formulation. Ten different buffers are used to span the range of pH between 3.5 and 9. The primary screen variables are polymer type, polymer molecular weight, pH and low ionic strength.

PEGRx 2 is a crystallization reagent kit designed to evaluate an array of polymers of varying molecular weight in a medium ionic strength environment in the presence of additives, salts, volatile organics and polyols versus a wide range of pH. Polymer reagents include Polyethylene glycols and Polyethylene glycol monomethyl ethers. The polymer molecular weight range between 200 and 20,000 is evaluated in a medium ionic strength formulation. Ten different buffers are used to span the range of pH between 3.5 and 9. The primary screen variables are polymer type, polymer molecular weight, pH and secondary reagents which include additives, salts, volatile organics and polyols.上海金畔生物作为Hampton蛋白结晶产品的代理商,竭诚为您服务,欢迎新老客户咨询。PEGRx 1 contains 48 unique reagents, 10 ml each.

PEGRx 2 contains 48 unique reagents, 10 ml each

PEGRx HT contains the 96 PEGRx 1 and PEGRx 2 reagent in a single Deep Well block format.

Ready-to-use reagents are sterile filtered and formulated with ultra-pure Type 1 water, using the highest purity salts, polymers, organics and buffers. Individual reagents are available through the Hampton Research Custom Shop.

PEGRx 1 • PEGRx 2 • PEGRx HT

PEGRx

PEGRx 1 • PEGRx 2 • PEGRx HT

DesR crystals grown using Hampton Research PEGRx, Jin Ho Moon, Korea University.

CAT NO NAME DESCRIPTION
HR2-082 PEGRx 1 10 ml, tube format
HR2-084 PEGRx 2 10 ml, tube format
HR2-086 PEGRx HT 1 ml, Deep Well block format

Hampton 48孔坐滴蛋白结晶板 48-Well Crystallization Plate

Hampton 48孔坐滴蛋白结晶板 48-Well Crystallization Plate
Applications

Sitting drop crystallization
Features

One drop per reservoir
SBS format
48 well plate
9 mm standard distance between wells
Drop volume: Up to 10 µl
Reservoir volume: 50 to 200 µl
Micro-numbering alongside drop volumes
Rigid plate structure
Wide partition walls between wells improve sealing
Developed in conjunction with the MRC Laboratory of Molecular Biology in Cambridge, United Kingdom
UV compatible (UVP)
Description
MRC Maxi 48-Well Crystallization Plate for Automated Optimization

The MRC Maxi optimization plate is a breakthrough for macromolecular crystallization presented in a 48 well format. Offering easy to automate crystallization optimization with large sitting-drops, the new MRC Maxi Crystallization plate is the perfect solution. Manufactured by Swissci AG, the plate offers an SBS format while providing 48 wells. MRC Maxi is intended for large drops and is compatible both with standard robotic systems as well as manual pipetting.

The plate was developed at the MRC Laboratory of Molecular Biology (Cambridge, UK) in collaboration with Jan Löwe and Fabrice Gorrec. It is a result of many years of experience in successful robotic high-throughput crystallization and complements the original MRC crystallization plate, which is intended for smaller drop volumes and higher throughput during screening.

Drop volumes of up to 10 µl are possible. The 9 mm standard distance between wells is preserved, enabling the use of multi-channel manual pipettes and robotic liquid handlers, making MRC Maxi one of the most automation-friendly optimization plates on the market.

MRC Maxi is covered by global intellectual property and design registration as are the Swissci AG MRC 2 lens 96 well plates. Several breakthrough features of the original MRC plate have been maintained. Wells are labeled individually. Drops are raised for easy access during crystal retrieval. MRC Maxi uses the same proprietary polymer specially selected for the purpose of UV light visualization and the material used keeps through-plastic evaporation to a minimum. Well shapes are spherical but shallow.

The MRC Maxi Crystallization plate offers unique properties that make it the ideal choice for microliter-sized optimization experiments and is made from UV compatible UVP.

The advantages of the MRC Maxi Crystallization plate – in brief

Easy Crystal Retrieval
Raised wide wells make the crystal mounting especially easy.

Easy Viewing
The wells are wide conical.
Each well has a micro lens for perfect illumination.
Micro numbering readable under the microscope for each well.
The optically superior polymer (UVP) is UV transmissible.

Better Sealing
Wide partition walls between the wells give plenty of area for good sealing with tape.

Very Rigid, Automation-Friendly Plate Design
The UVP polymer reduces through-plastic evaporation to a minimum.

SBS Standard
The plates are designed to the SBS standard and are compatible with all common holders.
9 mm distance from well-to-well within columns, 18 mm distance within rows.

Unique Polymer (UVP)
Ultra-low sample binding.
No static charging.

Recommended Volumes
Volumes validated for MRC Maxi are up to 10 µl of sample drop and 200 µl of the crystallization reagent.

CAT NO NAME DESCRIPTION
HR3-179 MRC Maxi 48-Well Crystallization Plate 10 plate case
HR3-180 MRC Maxi 48-Well Crystallization Plate 40 plate case