What is Colony screen PCR?

Colony screening with Polymerase Chain Reaction (PCR) is the most rapid initial screen to determine the presence of the DNA insert. Colony PCR involves lysing the bacteria and amplifying a portion of the plasmid with either insert-specific or vector-specific primers.

Why is 16S rRNA used in PCR?

Because of the complexity of DNA–DNA hybridization, 16S rRNA gene sequencing is used as a tool to identify bacteria at the species level and assist with differentiating between closely related bacterial species [8]. Many clinical laboratories rely on this method to identify unknown pathogenic strains [19].

What is the purpose of colony PCR?

Colony PCR is a method for rapidly screening colonies of yeast or bacteria that have grown up on selective media following a transformation step, to verify that the desired genetic construct is present, or to amplify a portion of the construct.

How will you know if your 16S rRNA PCR was successful?

If you have a gel electrophoresis unit run a gel and see if there is a band of DNA. This is so you know your PCR was successful.

How does a colony PCR work?

Principle of Colony PCR: A bacterial colony is picked and added directly into the mastermix containing all the PCR reagents. Additionally, by adding one initial heating step to the PCR, the plasmid DNA comes out from the bacteria cell and amplified in the reaction.

What do you need to know about colony PCR?

Overview. Colony PCR is a method used to screen for plasmids containing a desired insert directly from bacterial colonies without the need for culturing or plasmid purification steps. With SapphireAmp Fast PCR Master Mix, the colony PCR workflow is further improved and can be set-up with three basic steps:

Is the 16S PCR protocol still in use?

This protocol was posted here in early 2014. As of early 2016, we are no longer using this exact protocol. We use the same protocol as the Earth Microbiome Project (copied directly below): Primers for paired-end 16s community sequencing on the Illumina HiSeq platform using bacteria/archaeal primers 515F/806R.

How to set up colony PCR with sapphireamp?

With SapphireAmp Fast PCR Master Mix, the colony PCR workflow is further improved and can be set-up with three basic steps: 1 Pick a colony, 2 “Poke” to a replica plate, and 3 Perform fast PCR using suspend

What kind of primer do you use to screen colonies?

The type of primers you use depends on your preferences. Either way, make sure to test your colony PCR primers before using them to screen colonies. The best way to do this is by using your vector with and without an insert to verify that the primers amplify the expected size PCR products.