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Emily Schmitt Sepiapterin Reductase-Beery Twins Story

  • Page ID
    108138
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    Exercise \(\PageIndex{1}\)

    Which mutation was contributed by the mother that affected the Sepiapterian reductase (SPR) in the Beery Twins situation?A hand holds a colorful 3D model of a protein structure with various curly and straight components.

    Answer

    a) early stop of the protein (Lys to termination) Lys251X

    b) Arg 150 Gly

    c) there was no mutation from the mother that caused the disease

    d) Lys 250 Glu

     

     

    Here is a hint if you need one

    Authored by [YOUR NAME].  Last update:  [FILL IN DATE]

    Date of origin

    Introduction - Meet the Beery Twins

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    Flowchart illustrating a biochemical pathway, with annotations such as "give to twins" and "take away COOH." Key components highlighted.

    Figure 1: The pathway above shows where the drugs given to the twins exist in the pathway that involves Sepiapterin Reductase (SPR).  Note that the twins were prescribed 5-HTP and L-Dopa which are downstream of the "broken" SPR. In this way dopamine and serotonin can still be produced in the twins.

     

     

     

    Molecular structure with light blue protein chains, a central grey molecule, and dotted lines indicating interactions between atoms.

     

    Figure 2: iCN3D recreation of Alen et al., 2019 Figure 5- Crystal structure of inhibitor 3 bound to SPR (PDB code 6I6P)

     

     

    Figure \(\PageIndex{x}\) is an interactive iCn3D model of [INSERT DESCRIPTIVE TEXT - often a modified version of the title from the actual PDB page (INSERT PDB CODE)]

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    3k83 Interactive iCn3D model

    3D molecular structure showing various atoms in gray, red, blue, yellow, and green, with dotted lines indicating interactions.

     


    Emily Schmitt Sepiapterin Reductase-Beery Twins Story is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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