Chemistry: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 N[EPA]
3D model (JSmol)	Interactive image
ChEBI	CHEBI:17541
ChemSpider	114616
KEGG	C04234
PubChem CID	129417
UNII	ZFW7MEG9NT
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

Tracking categories (test):

• SizeSet

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.