K1032

Invitrogen™ LiveBLAzer™ FRET-B/G Loading Kit with CCF2-AM

Manufacturer: Invitrogen™

Select a Size

Pack Size SKU Availability Price
Each of 1 K1032-Each-of-1 In Stock ₹ 1,14,137.04

K1032 - Each of 1

₹ 1,14,137.04

In Stock

Quantity

1

Base Price: ₹ 1,14,137.04

GST (18%): ₹ 20,544.667

Total Price: ₹ 1,34,681.707

Cell Permeability

Cell-Permeant

Detection Method

Fluorescence

Product Line

LiveBLAzer™

Substrate Properties

Chemical Substrate

Substrate

CCF2-AM

Content And Storage

GeneBLAzer™ beta-lactamase substrates are supplied as loading kits (Table 1) and are available in bulk sizes. Loading kits include CCF2-AM or CCF4-AM, DMSO (for Solution A), Solution B, and Solution C.CCF2-AM and CCF4-AM are provided dry, and should be stored at -20°C, desiccated and protected from light. DMSO (for Solution A), Solution B, and Solution C should be stored at 22°C to 25°C, protected from direct light. Slightly cooler temperatures may cause a white precipitate to form in Solution B.

For Use With (Equipment)

Flow Cytometer, Microplate Reader

Quantity

200 μg

Substrate Type

Beta-Lactamase Substrate

Type

FRET-B/G Loading Kit

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Description

  • GeneBLAzer™ cell-based assays utilize the membrane-permeant ester forms (CCF2-AM and CCF4-AM) of the negatively charged fluorescent beta-lactamase substrates, CCF2 and CCF4
  • These lipophilic esters readily enter the cell, where cleavage by endogeneous cytoplasmic esterases rapidly converts them into their negatively charged forms, thereby trapping them in the cytosol
  • Detection of GeneBLAzer™ assays is FRET-based
  • Each substrate is labeled with two fluorophores that form an efficient FRET pair
  • In the absence of beta-lactamase activity, exciting the coumarin at 409 nm in the intact CCF2 molecule results in FRET to the fluorescein, which emits a green fluorescence signal at 518 nm (Figure 1)
  • In the presence of beta-lactamase activity, however, cleavage of CCF2 spatially separates the two dyes and disrupts FRET, so that exciting the coumarin at 409 nm now produces a blue fluorescence signal at 447 nm
  • This blue signal can be readily observed under a microscope and can also be detected as an increase in the blue channel readout on fluorescent microplate readers
  • The CCF2-AM and CCF4-AM substrates are essential assay components for the GeneBLAzer™ platform
  • These substrates are fully compatible with flow cytometry, speeding the time to clone selection
  • Ratiometric analysis of the blue and green signals reduces well-to-well variation due to differences in cell numbers and substrate loading, leading to high Z'-factor values and low coefficients of variation (CVs)
  • CCF2-AM and CCF4-AM differ by two carbons in the bridge linking the coumarin moiety to the lactam ring
  • Both are in the membrane-permeable, esterified forms, and can be used for assays in intact cells
  • CCF4-AM has better solubility properties (soluble for >24 hours) than CCF2-AM and is thus best suited for screening applications
  • In addition, CCF4-AM has slightly better FRET and thus slightly lower background than CCF2-AM
  • CCF2-FA is essentially the CCF2 substrate without the esters found in the AM version
  • CCF2-FA is de-esterified and used in cell lysate applications, bypassing loading across the cell membrane and de-esterification steps
  • Cell lysates are the preferred method for applications using cells that contain a cell wall
  • CCF2-FA can also be used as a control to acquire the excitation and emission spectra for CCF2-AM and CCF4-AM.

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Content And Storage:
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For Use With (Equipment):
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