Specialty Proteins

Anti-NKX3.1 Antibody

Anti-human NKX3.1 is the IgG fraction from rabbit antisera generated by immunizing the animals with purified recombinant human NKX3.1 protein.  The immunogen corresponds to the amino-terminal 153 amino acids of the human protein (1).  The IgG fraction was prepared by protein A affinity chromatography.  NKX3.1 is located on human chromosome 8p21.21.  It is an ­androgen-­regulated homeodomain gene with the expression of the NKX3.1 protein ­predominantly localized to prostate epithelial cells (2, 3).  Mouse Nkx3.1 is an androgen-regulated homeodomain gene with the expression of Nkx3.1 protein predominantly localized to the prostate epithelial cells (5).  Anti-mouse Nkx3.1 antibody is the IgG fraction from rabbit antisera generated by immunizing the animals with purified recombinant mouse Nkx3.1 protein.  To improve the specificity of the antibody, only the N-terminal domain of mouse Nkx3.1 was produced as an immunogen. The IgG fraction was prepared by protein A affinity chromatography. IgG specific to mouse Nkx3.1 was further purified using an affinity matrix produced by cross-linking the immunogen to agarose.

References 

  1. Bethel, C. R. et al. 2006. Decreased NKX3.1 protein expression in focal prostatic atrophy, prostatic intraepithelial neoplasia, and adenocarcinoma: association with Gleason score and chromosome 8p deletion. Cancer Res. 66:10683-10690.
  2. Abate-Shen, C., Shen, M. M., and Gelmann, E. 2008. Integrating differentiation and cancer: the Nkx3.1 homeobox gene in prostate organogenesis and carcinogenesis. Differentiation: research in biological diversity. 76:717-727.
  3. Gurel, B., et al. 2010. NKX3.1 as a marker of prostatic origin in metastatic tumors. Am. J. Surg. Pathol. 34(8):1097-1105.
  4. Guan, B., Pungaltya, P., et al. 2008. Ubiquitination by TOPORS regulates the prostate tumor suppressor NKX3.1. J. Biol. Chem. 283(8):4834-4840
  5. Bieberich, C. J., Fujita, K., He, W. W., and Jay, G. (1996). Prostate-specific and androgen-dependent expression of a novel homeobox gene. J Biol Chem 271, 31779-31782.
Microscopic tissue samples with different stains.

A soft tissue metastasis stained with, from left to right and top to bottom, H&E (A), NKX3.1 (B), BSA (C) and PSAP (D). Note the lack of staining with PSA, while NKX3.1 and PSAP still stain strongly. (Fig. 4 from Gurel et. al., 2010.)

Order # Product Name Unit Price
0317Anti-human NKX3.1100 μg$396.50
0315Anti-murine NKX3.130 μg Affinity Pure$498.50
0314Anti-human NKX3.11 gInquire

Product Specifications

Liquid Storage4 ̊C, Stable for 1 months-20°C, Stable for 1 year
Lyophilized-20°C, Stable for 2 years

Anti-YebF Antisera

Anti-YebF antisera is used for detecting the YebF protein in immunoassays. The antisera was prepared by injecting rabbits with purified YebF protein isolated from E. coli strain HMS174 harboring pAES40.

​Store the product desiccated at -20 °C. Store the reconstituted product at 40 °C.

Order # Product Name Type Price
0313Anti-YebF Antisera0.5 mlQuotation
White test tube with blue cap.

I27O™ AFM Reference Protein

I27O™ is a unique recombinant polyprotein used for the calibration of and as a reference for force extension experiments using atomic force microscopes. It is supplied in a ready-to-use solution. The protein is composed of eight repeats of the Ig 27 domain of human titin. Single-molecule measurements give up to eight sawtooth force-extension curves with the specifications below. The protein has durable elasticity that allows for repeated unfolding and refolding.

Product Specifications

Parameter Value
Distance between peaks24.1 ± 0.34nm
Force Peaks204 ± 26pN
Persistence Length0.30 ± 0.07nm
Contour Length (per domain)28.4 ± 0.3nm
Order # Product Name Type Price
0304I27O™ AFM Reference ProteinLiquid (ready-to-use) 100μg$507.10

Bacterial Esterases

Cold-tolerant bacterial esterases and lipases have the unusual property of a flexible structure, which allows these enzymes to accommodate a broad range of substrates and to be more solvent tolerant. These properties, coupled with the stereoselectivity of enzymes, make esterases and lipases ideal catalysts for the chemical modification of pharmacophore molecules. Employing an array of techniques to identify esterase/lipase activity for industrial processes, an in-house microbial collection of psychrophilic microbes was used to screen for specific esterase/lipase activities. Two marine bacteria yielded esterase/lipase genes encoding LypA (V. cholerae) and VlpA (arctic-derived Vibrio sp.). These enzymes have broad-spectrum substrate activity, and VlpA exhibits tolerance to solvents by retaining its catalytic activity in buffer-solvent mixtures.

Two labeled laboratory vials on white background.

Product Specifications

Enzyme EC Classification Source Special Properties
LypA EC 3.1.1.5 lysophospholipase L2 from Vibrio cholera Mesophilic, Substrates: diacyl glycerides and r-nitrophenyl esters, poor thioesterase activity
VlpA EC 3.1.1.3 lipase from a marine Vibrio sp. Psychrophilic, Substrates: broad activity with short and long chain acryl esters, solvent tolerant
Order # Product Name Type Price
0305-1 LypA Enzyme Solution 100 Units $435.60
0305-5 LypA Enzyme Solution 500 Units $1,940.40
0307-1 VlpA Enzyme Solution 100 Units $507.10
0307-5 VlpA Enzyme Solution 500 Units $2,262.70
Two white bottles with blue caps.

Gaussia Luciferase

Gaussia luciferase is a luminescent protein with quantum yields higher than the luciferases from Renilla sp. and is up to 1,000 times brighter than firefly luciferase. It is ATP-independent, requiring only coelenterazine and O₂ as substrates. Gaussia’s high quantum yields make it particularly useful in immunoassays.

Product Specifications

Protein Analysis Amino Acids % Frequency
Length 185 aaCharged (RKHYCDE) 33.51
Molecular Weight 18,999Acidic (DE) 12.97
Molar Extinction Coefficient 8,290Basic (KR) 12.97
Isoelectric Point 6.88 Polar(NCQSTY) 21.08
Charge at pH 7 -0.15Hydrophobic (AILFWV) 35.68
Order # Product Name Unit Price
0308-1Gaussia luciferase 2x1mgQuotation
0308-100Gaussia luciferase 2x100μgQuotation

Renilla mullerei Luciferase & Renilla reniformis GFP

Renilla mullerei and Renilla reniformis are species of soft coral made up of colonies of polyps that emit green fluorescence. The green fluorescent protein obtained from this organism exhibits nearly symmetrical excitation and emission peaks. Recombinant Renilla reniformis GFP has the same level of fluorescence as the native protein.

Two labeled laboratory vials with blue caps.

R. Mullerei Luciferase Specifications

Protein Analysis Amino Acids % Frequency
Length 238 aaCharged (RKHYCDE) 30.67
Molecular Weight 27,120Acidic (DE) 10.92
Molar Extinction Coefficient 23,970Basic (KR) 10.08
Isoelectric Point 6.34Polar (NCQSTY) 27.31
Charge at pH 7 -1.72Hydrophobic (AILFWV) 31.93

R. Reniformis GFP Specifications

Protein Analysis Amino Acids % Frequency
Length 233 aaCharged (RKHYCDE) 30.47
Molecular Weight 25,990Acidic (DE) 11.59
Molar Extinction Coefficient 15,840Basic (KR) 10.3
Isoelectric Point 6.19Polar (NCQSTY) 25.75
Charge at pH 7 -2.61Hydrophobic (AILFWV) 32.62
Order # Product Name Unit Price
0309-1Renilla mullerei luciferase1mgQuotation
0309-100Renilla mullerei luciferase100μgQuotation
0310-1Renilla reniformis Green Fluorescent Protein1mgQuotation
0310-10Renilla reniformis Green Fluorescent Protein10mgQuotation
Two white tubes with blue caps.

Ptilosarcus Green Fluorescent Protein

Ptilosarcus gurneyi (orange sea pen, sea feather) is a species of soft coral that emits a strong green fluorescence when disturbed. The green fluorescent protein obtained from this organism exhibits nearly symmetrical excitation and emission peaks. This is in contrast to the more commonly employed green fluorescent protein from Aequorea victoria, which has two wavelengths at which excitation occurs and a broader emission spectrum.

Product Specifications

Protein Analysis Amino Acids % Frequency
Length 238 aaCharged (RKHYCDE) 31.51
Molecular Weight 27,045Acidic (DE) 12.18
Molar Extinction Coefficient 22,450Basic (KR) 10.08
Isoelectric Point 5.92Polar (NCQSTY) 24.37
Charge at pH 7 -4.52Hydrophobic (AILFWV) 33.19
Order # Product Name Unit Price
0311-1Ptilosarcus Green Fluorescent Protein1mgQuotation
0311-10Ptilosarcus Green Fluorescent Protein10mgQuotation

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I27O™ AFM Reference Protein

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