This protocol has been used successfully to 15N or 13C/15N label our proteins using our pET1120/BL21(DE3) expression system: Preparing M9 minimal media begins with preparing a 5x stock solution of M9 salts. Generally, M9 salts contain a nitrogen source in the form of NH4Cl. Since we want to add a labeled nitrogen source, our 5x salts are prepared minus NH4Cl. Standard 5 X M9 Minimal Media salts minus nitrogen source For 1L 5xM9 salts: - [Read Expression Protocol in M9 Minimal Media via T7 Promoter]
The cell-attached capacitance recording technique is a powerful technique that has been successfully used to resolve single vesicle fusion and fusion pore conductance. This technique, however, has not been applied to synapses because of the difficulty in accessing release sites. Here, we developed a technique to expose release sites in a large nerve terminal, the calyx of Held, which contains clear-core glutamatergic vesicles. - [Read The Cell Attached Capacitance Recording Technique]
This procedure, which uses a root transformation protocol, provides a rapid method for assessing gene expression in Arabidopsis roots. It is useful for testing promoter:reporter gene constructs, for expressing genes, the overexpression of which is lethal in whole plants, and for transforming the roots of plants that are recalcitrant to conventional transformation techniques. The protocol has been used successfully with Ws, No-0, and RLD ecotypes. - [Read Transgene Expression in Regenerated Roots]
Protocol describes a method for staining nerve fibers in whole-mount preparations of avian embryos using an antibody against the 160-kD subunit of neurofilaments. This allows the comparison of the branching pattern of motor and sensory neurons between control and experimental embryos. This protocol has been successfully applied for embryos at different stages up to about stage 33 (7 days of incubation). - [Read Whole-Mount Preparations for Analysis of Axonal Pathfinding in dsRNA-Treated Avian Embryos]
Protocol describes a method for staining nerve fibers in whole-mount preparations of avian embryos using an antibody against the 160-kD subunit of neurofilaments. This allows the comparison of the branching pattern of motor and sensory neurons between control and experimental embryos. This protocol has been successfully applied for embryos at different stages up to about stage 33 (7 days of incubation). - [Read Whole-Mount Preparations for Analysis of Axonal Pathfinding in dsRNA-Treated Avian Embryos Protocol]
The protocol gives general considerations for the design of targeting vectors for transgenic mice. The protocol shares tips in the design of knock-out and knock-in vectors and some of their strategies for producing homologously recombined embryonic stem cells.