Hampton MembFac • Crystal Screen Lite • MembFac HT
Primary sparse matrix crystallization screen for membrane proteins and samples with limited solubility 膜蛋白和样品溶解度有限样品
Membrane protein sparse matrix screens
Sparse matrix formula efficiently samples salts, polymers, organics and pH
pH range 4.6 – 8.5
Formulated for use with detergents
Tube or Deep Well block format
Crystal Screen Lite features a lower ionic strength than the original Crystal Screen
MembFac is a highly effective sparse matrix screen specifically designed as a preliminary screen for the crystallization of membrane proteins. MembFac is based upon the highly effective biased sparse matrix methodology. The MembFac screen matrix is optimized for the crystallization of membrane proteins.
MembFac contains 48 unique reagent formulations. With this set of 48 conditions, numerous chemicals and chemical combinations are utilized, allowing one to evaluate a large variety of potential crystallization conditions. MembFac covers a broad pH range between 4 and 9.
The basic rationale of MembFac is to perform a sparse matrix screen while changing the detergent dimension because detergents play an important factor in the crystallization of membrane proteins. A MembFac screen is to be completed for each detergent. Detergent screens are available separately.
The membrane protein of interest is first isolated in the detergent which gives the highest stability and activity. The protein concentration should be approximately 10 to 20 mg/ml and the detergent concentration should be only slightly above the CMC. The sample is then set against MembFac, using all 48 solutions plus the screening detergent(s) of choice. The screening detergent concentration should be approximately one to three times the CMC. Hence, for each detergent screened, one would utilize approximately 1 to 2 mg of sample.
The MembFac protocol was used to crystallize membrane proteins including SQR, fumerate: quinone oxireductase, LHII, and LHCII.
Crystal Screen Lite is a sparse matrix of trial crystallization reagent conditions based upon the Crystal Screen™.3 The primary screen variables are salt, pH, and precipitant (salts, polymers, volatile organics, and non-volatile organics).2Crystal Screen Lite differs from the original Crystal Screen kit in that the primary precipitant reagents are one-half the concentration of that used in the original Crystal Screen formulation. The secondary salts, ions, and buffers remain at the original Crystal Screen concentration. Reducing the primary concentration of the primary precipitant results in a screen which is “more gentle” on the sample and typically produces much less precipitate conditions than the original Crystal Screen.
MembFac contains 48 unique reagents, 10 ml each.
MembFac HT contains 1 ml each of all 48 reagents from MembFac and reagents 1-48 from Crystal Screen Lite 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.
||10 ml, tube format
||Crystal Screen Lite
||10 ml, tube format
||1 ml, Deep Well block format
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.
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.
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.
Hampton 24孔坐滴板 Cryschem Plate
Sitting drop crystallization
Heavy atom soaks
|Optically clear, concave sitting drop post
|Cryschem Plate – Larger footprint and round reagent reservoir
|Cryschem M – Microplate footprint with round reagent reservoir
|Cryschem S – Microplate footprint with square reagent reservoir
Compatible with Formulatrix Formulator
|Smooth, flat top for easy seal
|Each plate supplied with a cover
Optically clear polystyrene
The Cryschem Plate is a 24 well sitting drop plate that is sealed with clear sealing tape. The polystyrene plate is supplied with a raised cover so the plate can also be sealed with vacuum grease and plain glass or plastic cover slides (22 mm diameter). The stackable, 24 well plates have distortion-free, flat bottom wells and a concave sitting drop post in the center of the well for concentric equilibration of the drop with the reagent. Each plate is individually sealed. The top of the plate and each of the 24 wells is a single, flat plane for smooth and easy seal application. Well spacing provides for a large seal area between wells to prevent cross contamination and evaporation.
Cryschem Plate is large plate footprint with circular reagent reservoir. Cryschem plate approximate size: 15.1 cm x 10.6 cm x 2.2 cm. Approximate well size: 1.6 cm x 1.5 cm. Typical fill volume: 500 to 1,000 µl. Well capacity: 1.5 ml. Maximum drop volume on post: 40 µl. Recommended seal: HR3-511 Crystal Clear Sealing Tape (1.88 inch x 43.7 yard roll, with cutter) or HR4-511 Crystal Clear Sealing Tape (1.88 inch x 60 yard roll, without cutter).
Cryschem M Plate is microplate footprint with circular reagent reservoir. Cryschem M microplate approximate size: 128 mm x 86 mm x 14 mm. Approximate circular reservoir size: 15 mm wide x 9 mm deep. Typical reservoir volume: 500 µl. Well capacity: 1.1 ml. Maximum drop volume on post: 30 µl. Recommended seal: HR3-609 Crystal Clear Sealing Film (100 pack), HR4-521 ClearSeal Film (100 pack) or HR4-506 Crystal Clear Sealing Tape (3 inch x 55 yard roll, without cutter). HR4-508 Crystal Clear Sealing Tape (0.75 inch x 650 inch, with cutter) seals a single row at a time.
Cryschem S Plate is microplate footprint with square reagent reservoir. Cryschem S microplate approximate size: 128 mm x 86 mm x 14 mm. Approximate square reservoir size: 15 mm wide x 9 mm deep. Typical reservoir volume: 500 µl. Well capacity: 1.1 ml. Maximum drop volume on post: 30 µl. Recommended seal: HR3-609 Crystal Clear Sealing Film (100 pack), HR4-521 ClearSeal Film (100 pack) or HR4-506 Crystal Clear Sealing Tape (3 inch x 55 yard roll, without cutter). HR4-508 Crystal Clear Sealing Tape (0.75 inch x 650 inch, with cutter) seals a single row at a time.
||24 plate case
||100 plate case
||Cryschem M Plate (round reagent reservoir)
||50 plate case
||Cryschem S Plate (square reagent reservoir)
||50 plate case
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