What are the differences between polysome profiling and ribosome profiling?

Question

Accepted Answer

Basis of differentiation

Polysome profiling

Ribosome profiling

Definition

Polysome profiling is a technique used to measure the distribution of ribosomes along mRNA molecules within a cell

Ribosome profiling is a direct method for precisely identifying the specific regions of mRNA that are actively being translated by ribosomes

Technique

Involves sucrose density gradient centrifugation

Utilizes mRNA extraction, deep sequencing, and cDNA synthesis

Analysis of translatome

Is comparatively less accurate

Comparatively is more accurate

Information obtained

Reflects translational activity of mRNA molecules

Reveals translation initiation, elongation, and termination

Basis of differentiation	Polysome profiling	Ribosome profiling
Definition	Polysome profiling is a technique used to measure the distribution of ribosomes along mRNA molecules within a cell	Ribosome profiling is a direct method for precisely identifying the specific regions of mRNA that are actively being translated by ribosomes
Technique	Involves sucrose density gradient centrifugation	Utilizes mRNA extraction, deep sequencing, and cDNA synthesis
Analysis of translatome	Is comparatively less accurate	Comparatively is more accurate
Information obtained	Reflects translational activity of mRNA molecules	Reveals translation initiation, elongation, and termination