2-Carboxy-D-arabitinol 1-phosphate

2-Carboxy-D-arabitinol 1-phosphate
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
CAS Number	106777-19-9 [EPA];
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:17541;
ChemSpider	114616;
KEGG	C04234;
PubChem CID	129417;
UNII	ZFW7MEG9NT;
CompTox Dashboard (EPA)	DTXSID80147765 ;
	InChI 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;
	SMILES OC[C@@H](O)[C@@H](O)[C@](O)(COP(O)(O)=O)C(O)=O;
Properties
Chemical formula	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). Infobox references

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.^[1]

References[edit]

^ Servaites JC (1990). "Inhibition of ribulose 1,5-bisphosphate carboxylase/oxygenase by 2-carboxyarabinitol-1-phosphate". Plant Physiol. 92 (4): 867–70. doi:10.1104/pp.92.4.867. PMC 1062388. PMID 16667398.

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[pmid16667398-1] Servaites JC (1990). "Inhibition of ribulose 1,5-bisphosphate carboxylase/oxygenase by 2-carboxyarabinitol-1-phosphate". Plant Physiol. 92 (4): 867–70. doi:10.1104/pp.92.4.867. PMC 1062388. PMID 16667398.

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