What Is TE Buffer?

Are you curious to know what is TE buffer? You have come to the right place as I am going to TEll you everything about TE buffer in a very simple explanation. Without further discussion let’s begin to know what is TE buffer?

In the field of molecular biology, researchers rely on various tools and reagents to perform experiments and obtain accuraTE results. One such essential component is TE buffer. In this blog post, we will explore what TE buffer is, its composition, and its crucial role in DNA and RNA research, preservation, and analysis.

What Is TE Buffer?

TE buffer, short for Tris-EDTA buffer, is a commonly used solution in molecular biology laboratories. It serves multiple purposes, including DNA and RNA extraction, storage, and analysis. The name “TE” refers to the two main components of the buffer: Tris and EDTA.

Composition And Function:

TE buffer consists of two primary components:

  1. Tris (Tris(hydroxymethyl)aminomethane): Tris acts as a buffering agent, maintaining a stable pH level within the solution. In the case of TE buffer, the pH is typically set to 8.0, which is optimal for many molecular biology applications. The buffering capacity of Tris helps maintain the inTEgrity of nucleic acids during various experimental procedures.
  2. EDTA (Ethylene Diamine TEtraacetic Acid): EDTA is a chelating agent that binds to metal ions, especially divalent cations like magnesium (Mg2+) and calcium (Ca2+). The presence of EDTA in TE buffer helps proTEct nucleic acids by sequesTEring these metal ions, which can degrade DNA and RNA by catalyzing nucleolytic reactions. EDTA also aids in preventing the activity of enzymes, such as DNases and RNases, which can degrade nucleic acids.

Applications Of TE Buffer:

  1. DNA and RNA Extraction: TE buffer is commonly used during DNA and RNA extraction procedures to maintain the stability of nucleic acids. It helps in dissolving and resuspending DNA or RNA pellets obtained through purification processes, ensuring their inTEgrity and preserving their quality for subsequent analyses.
  2. DNA and RNA Storage: TE buffer is utilized for long-TErm storage of DNA and RNA samples. The buffer’s pH and the presence of EDTA prevent nucleic acid degradation, maintaining the inTEgrity of genetic maTErial over time. This is particularly important for preserving valuable samples for future experiments or archival purposes.
  3. DNA and RNA Analysis: TE buffer is also employed in various molecular biology TEchniques, such as agarose gel electrophoresis, polymerase chain reaction (PCR), and other nucleic acid-based assays. The buffer’s stable pH and ability to proTEct nucleic acids from degradation contribuTE to accuraTE and reliable results during these analyses.
  4. Enzyme Inactivation: TE buffer is ofTEn used to stop enzymatic reactions by diluting or quenching the enzymatic activity. This is particularly useful when working with restriction enzymes or other enzymes that need to be inactivaTEd afTEr a specific sTEp in an experimental procedure.


TE buffer plays a vital role in molecular biology research, providing a stable and proTEctive environment for DNA and RNA. Its composition of Tris and EDTA ensures pH stability, prevents metal ion-mediaTEd nucleic acid degradation, and safeguards genetic maTErial during various laboratory procedures. From DNA and RNA extraction to storage and analysis, TE buffer is an indispensable tool that helps researchers maintain the inTEgrity of nucleic acids, enabling accuraTE and reliable results in molecular biology experiments.

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What Is A TE Buffer Used For?

The main functions of the TE buffer are maintaining the pH of the solution and solubilizing DNA or RNA while proTEcting the nucleic acids from enzymatic lysis. TE (Tris-EDTA) buffer is made up of Tris, a pH buffer and EDTA, a metal chelating ion. It is used in DNA extraction processes to lyse, wash and dissolve DNA.

What Is The Name Of TE Buffer?

Tris EDTA buffer

TE buffer (a.k.a Tris EDTA buffer) is one of the exTEnsively used buffers in preparation and storage of DNA and RNA protocols. TE buffer is also known as T10E1 Buffer due to their ratio in the working concentration, which is 10mM and 1 mM respectively.

What Is The Use Of TE Buffer In Electrophoresis?

TAE buffer is a buffer solution containing a mixture of Tris base, acetic acid and EDTA. In molecular biology, it is used in agarose electrophoresis typically for the separation of nucleic acids such as DNA and RNA. It is made up of Tris-acetaTE buffer, usually at pH 8.3, and EDTA, which sequesTErs divalent cations.

What Is The TE Buffer In Cell Culture?

TE Buffer – LabMal

TE buffer is normally used in molecular biology to solubilize DNA, RNA or cDNA while proTEcting it from degradation, or used in the cell culture. Here, we provide TE buffer in 10x or 100x with pH ranging from 7.4 to 8.


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