PSA is best described as which type of molecule?

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Study for the Ciulla Clinical Chemistry Test. Enhance your knowledge with flashcards and multiple-choice questions. Prepare for the exam with comprehensive study materials and detailed explanations for each question.

Multiple Choice

PSA is best described as which type of molecule?

Explanation:
PSA is a single-chain glycoprotein. It’s a secreted enzyme produced by prostate epithelial cells, made from a single polypeptide chain. The molecule is glycosylated, meaning carbohydrate groups are attached to the protein, which is what makes it a glycoprotein. It is not a lipid or a nucleic acid, and it functions as a monomer rather than a dimer, so describing it as a single-chain glycoprotein best captures its nature.

PSA is a single-chain glycoprotein. It’s a secreted enzyme produced by prostate epithelial cells, made from a single polypeptide chain. The molecule is glycosylated, meaning carbohydrate groups are attached to the protein, which is what makes it a glycoprotein. It is not a lipid or a nucleic acid, and it functions as a monomer rather than a dimer, so describing it as a single-chain glycoprotein best captures its nature.

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