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Ramachandran plot

A two-dimensional graph that plots the torsion angles phi and psi of the polypeptide backbone in a protein to identify the allowed and disallowed regions of conformation.
Noun
pl: Ramachandran plots

This term refers to a specialized visualization tool used in structural biology and biochemistry. It serves as a diagnostic map to determine if a protein model is physically plausible by checking if the dihedral angles of the amino acid residues fall within sterically allowed regions.

Because it is a technical term named after G. N. Ramachandran, it is typically treated as a proper noun phrase. In professional literature, it is used to validate the quality of X-ray crystallography or NMR structures, where "outliers" on the plot indicate potential errors in the atomic coordinates or unusual local conformations.

Meanings

Noun
[[]][Ramachandran plot]

A two-dimensional graph that plots the torsion angles phi and psi of the polypeptide backbone in a protein to identify the allowed and disallowed regions of conformation.

The researcher analyzed the Ramachandran plot to verify the stereochemical quality of the protein structure.

Examples

The researcher used a Ramachandran plot to validate the protein structure.

The researcher used a Ramachandran plot to validate the protein structure.

Look at this Ramachandran plot to see where the outliers are located.

Look at this Ramachandran plot to see where the outliers are located.

School Life

A Ramachandran plot helps identify alpha helices and beta sheets.

A Ramachandran plot helps identify alpha helices and beta sheets.

I wonder if this residue falls into the disallowed region of the Ramachandran plot.

I wonder if this residue falls into the disallowed region of the Ramachandran plot.

The professor explained how the Ramachandran plot accounts for steric hindrance.

The professor explained how the Ramachandran plot accounts for steric hindrance.

School Life

We need to check the Ramachandran plot before submitting the crystal structure.

We need to check the Ramachandran plot before submitting the crystal structure.

Office

The distribution of phi and psi angles is clearly visible on the Ramachandran plot.

The distribution of phi and psi angles is clearly visible on the Ramachandran plot.

Does this Ramachandran plot show any significant conformational strain?

Does this Ramachandran plot show any significant conformational strain?

The software automatically generates a Ramachandran plot for every refined model.

The software automatically generates a Ramachandran plot for every refined model.

Office

Related Words

Última actualización: May 2026Reportar un error