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Enzyme inhibitor
2-Carboxy-D-arabitinol 1-phosphate
Другие языки:

    2-Carboxy-D-arabitinol 1-phosphate

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    2-Carboxy-D-arabitinol 1-phosphate
    2-Carboxy-D-arabitinol 1-phosphate.svg
    Names
    IUPAC name
    2-C-[(Phosphonooxy)methyl]-D-ribonic acid
    Systematic IUPAC name
    (2R,3R,4R)-2,3,4,5-Tetrahydroxy-2-[(phosphonooxy)methyl]pentanoic acid
    Other names
    CA1P
    Identifiers
    3D model (JSmol)
    ChEBI
    ChemSpider
    KEGG
    PubChem CID
    UNII
    • InChI=1S/C6H13O10P/c7-1-3(8)4(9)6(12,5(10)11)2-16-17(13,14)15/h3-4,7-9,12H,1-2H2,(H,10,11)(H2,13,14,15)/t3-,4-,6-/m1/s1
      Key: UJTMIRNFEXKGMS-ZMIZWQJLSA-N
    • OC[C@@H](O)[C@@H](O)[C@](O)(COP(O)(O)=O)C(O)=O
    Properties
    C6H13O10P
    Molar mass 276.134 g·mol−1
    Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

    2-Carboxy-D-arabitinol 1-phosphate (or CA1P) is a molecule produced in plants that inhibits RuBisCO, a key enzyme in the Calvin cycle and carbon fixation. In dark conditions, this molecule binds to RuBisCO, preventing it from participating in chemical reactions. As the amount of light present increases, CA1P levels decrease, freeing RuBisCO's reactive ends, allowing more of the molecules to participate in chemical reactions. It can be broken down by the enzyme 2-carboxy-D-arabinitol-1-phosphatase into 2-carboxy-D-arabinitol.



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