MetaCyc Enzyme: chloroplastic fructose-bisphosphate aldolase

Gene: FBA2 Accession Number: G-17678 (MetaCyc)

Species: Spinacia oleracea

A chloroplastic enzyme with fructose-1,6-bisphosphate aldolase activity was isolated from the leaves of well developed spinach (Spinacia oleracea L. Monopa) plants [Schnarrenberger86]. This enzyme was separated from its cytosolic homolog isolated simultaneously (see cytosolic fructose-bisphosphate aldolase). In addition to fructose 1,6-bisphosphate, the enzyme was shown to catalyze the aldol cleavage of β-D-fructofuranose 1-phosphate. The chrloroplastic enzyme represented 92% of the total leaf aldolase activity. Additionally, this chloroplast aldolase was shown to have a Km (F1,6P) value 5 times higher than that of the cytosol aldolase. However, the Km (F1P) values for either enzymes are relatively similar [Schnarrenberger86].

Locations: chloroplast

Molecular Weight of Polypeptide: 42.468 kD (from nucleotide sequence)

Unification Links: Entrez-Nucleotide:X66814 , Pride:P16096 , Protein Model Portal:P16096 , UniProt:P16096

Relationship Links: InterPro:IN-FAMILY:IPR000741 , InterPro:IN-FAMILY:IPR013785 , Panther:IN-FAMILY:PTHR11627 , Pfam:IN-FAMILY:PF00274 , Prosite:IN-FAMILY:PS00158

Gene-Reaction Schematic: ?

Gene-Reaction Schematic

GO Terms:

Cellular Component: GO:0009507 - chloroplast [Schnarrenberger86]

Created 17-Jan-2007 by Tissier C , TAIR

Enzymatic reaction of: fructose-1-phosphate aldolase (chloroplastic fructose-bisphosphate aldolase)

EC Number:

β-D-fructofuranose 1-phosphate <=> glycerone phosphate + D-glyceraldehyde

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.

The reaction is favored in the direction shown.

Kinetic Parameters:

Km (μM)
β-D-fructofuranose 1-phosphate

Enzymatic reaction of: fructose-1,6-bisphosphate aldolase (chloroplastic fructose-bisphosphate aldolase)

EC Number:

fructose 1,6-bisphosphate <=> glycerone phosphate + D-glyceraldehyde 3-phosphate

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the direction in which it was curated.

This reaction is reversible.

In Pathways: superpathway of anaerobic sucrose degradation , sucrose biosynthesis I (from photosynthesis) , glycolysis I (from glucose 6-phosphate)

Kinetic Parameters:

Km (μM)
fructose 1,6-bisphosphate


Schnarrenberger86: Schnarrenberger C, Kruger I (1986). "Distinction between Cytosol and Chloroplast Fructose-Bisphosphate Aldolases from Pea, Wheat, and Corn Leaves." Plant Physiol 80(2);301-304. PMID: 16664617

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Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
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