Vitamin A - Protein and Carriers

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Biochemistry of the Eye, Lecture 5

Last updated 2:51 PM on 10/2/26
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9 Terms

1
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Retinoic acid

  • Carboxylic acid functional group

  • Used for the synthesis of glycoproteins


2
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Retinal

  • Aldehyde functional group

  • Used for vision


3
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Retinol

  • Alcohol functional group

  • Used for transport and hormones


4
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Retinyl Ester

  • Attached to a fatty acid

  • Used for storage


5
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Retinol Binding Protein (RBP) and Prealbumin (PA)

Carry retinol between the liver and the retina

6
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Cellular Retinol Binding Protein (CRBP)

Carries retinol in the RPE and Müller cells

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Cellular Retinoic Acid Binding Protein (CRABP)

Carries retinoic acid in amacrine and Müller cells

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Cellular Retinaldehyde Binding Protein

Carries 11-cis-retinal in RPE and Müller cells

9
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Interphotoreceptor Retinoid Binding Protein

Carries 11-cis-retinal and retinol in the interphotoreceptor matrix