In column chromatography, what happens to hydrophilic proteins?

In column chromatography, what happens to hydrophilic proteins?

• A. Hydrophilic proteins pass through the column.
• B. Hydrophilic proteins bind to the beads.
• C. Hydrophilic proteins degrade the resin.
• D. Hydrophilic proteins change the pH.

Answer: (A)

In column chromatography, separation hinges on how strongly a protein sticks to the stationary phase on the beads versus staying in the moving buffer. Hydrophilic proteins interact weakly with many bead surfaces, especially hydrophobic ones, so they don’t bind and are carried through with the eluting buffer. This means they pass through the column rather than being retained by the beads. The other outcomes—degrading the resin, changing the pH, or binding to the beads because of hydrophilicity—don't align with how the process works under typical conditions; binding depends on the resin type and buffer, and pH is set by the buffer, not the protein.

In column chromatography, separation hinges on how strongly a protein sticks to the stationary phase on the beads versus staying in the moving buffer. Hydrophilic proteins interact weakly with many bead surfaces, especially hydrophobic ones, so they don’t bind and are carried through with the eluting buffer. This means they pass through the column rather than being retained by the beads. The other outcomes—degrading the resin, changing the pH, or binding to the beads because of hydrophilicity—don't align with how the process works under typical conditions; binding depends on the resin type and buffer, and pH is set by the buffer, not the protein.