sucrose biosynthesis II

Streb S, Zeeman SC. Starch metabolism in Arabidopsis. Arabidopsis Book. 2012;10():e0160. PMID: 23393426; PMCID: PMC3527087.; Wind J, Smeekens S, Hanson J. Sucrose: metabolite and signaling molecule. Phytochemistry. 2010 Oct;71(14-15):1610–4. doi: 10.1016/j.phytochem.2010.07.007. PMID: 20696445.; Lu Y, Steichen JM, Yao J, Sharkey TD. The role of cytosolic alpha-glucan phosphorylase in maltose metabolism and the comparison of amylomaltase in Arabidopsis and Escherichia coli. Plant Physiol. 2006 Nov;142(3):878–89. PMID: 16980562; PMCID: PMC1630732.; Dai N, Petreikov M, Portnoy V, Katzir N, Pharr DM, Schaffer AA. Cloning and expression analysis of a UDP-galactose/glucose pyrophosphorylase from melon fruit provides evidence for the major metabolic pathway of galactose metabolism in raffinose oligosaccharide metabolizing plants. Plant Physiol. 2006 Sep;142(1):294–304. PMID: 16829585; PMCID: PMC1557607.; Fettke J, Chia T, Eckermann N, Smith A, Steup M. A transglucosidase necessary for starch degradation and maltose metabolism in leaves at night acts on cytosolic heteroglycans (SHG). Plant J. 2006 May;46(4):668–84. doi: 10.1111/j.1365-313x.2006.02732.x. PMID: 16640603.; Lu Y, Sharkey TD. The importance of maltose in transitory starch breakdown. Plant Cell Environ. 2006 Mar;29(3):353–66. doi: 10.1111/j.1365-3040.2005.01480.x. PMID: 17080591.; Chia T, Thorneycroft D, Chapple A, Messerli G, Chen J, Zeeman SC, Smith SM, Smith AM. A cytosolic glucosyltransferase is required for conversion of starch to sucrose in Arabidopsis leaves at night. The Plant Journal. 2004 Jan 26;37(6):853–63. doi: 10.1111/j.1365-313x.2003.02012.x.; Preiss J, Okita TW, Greenberg E. Characterization of the spinach leaf phosphorylases. Plant Physiol. 1980 Nov;66(5):864–9. PMID: 16661543; PMCID: PMC440743.

Metabolites

D-Glucose

Formula: C6H12O6 (180.0633852)

CAS ID: 50-99-7

D-Glucose 6-phosphate

Formula: C6H13O9P (260.0297178)

CAS ID: 56-73-5

Diphosphate

Formula: H4P2O7 (177.9432294)

CAS ID: 2466-09-3

H+

Formula: H (1.0078246)

CAS ID: 12408-02-5

H2O

Formula: H2O (18.0105642)

CAS ID: 7732-18-5

Magnesium cation

Formula: Mg (23.98505)

CAS ID: 22537-22-0

Manganese(2+)

Formula: Mn (54.938046)

CAS ID: 7439-96-5

Sucrose

Formula: C12H22O11 (342.11620619999997)

CAS ID: 57-50-1

ATP(4-)

Formula: C10H12N5O13P3 (502.9644492)

CAS ID:

UDP(3-)

Formula: C9H11N2O12P2 (400.9787246)

CAS ID: 86527-70-0

ADP(3-)

Formula: C10H12N5O10P2 (424.0059412)

CAS ID:



Enzyme

EC Number name full name note
2.4.1.14 sucrose-phosphate synthase UDP-glucose:D-fructose-6-phosphate 2-alpha-D-glucosyltransferase
2.7.1.1 hexokinase ATP:D-hexose 6-phosphotransferase
2.7.7.23 UDP-N-acetylglucosamine diphosphorylase UTP:N-acetyl-alpha-D-glucosamine-1-phosphate uridylyltransferase
2.7.7.64 UTP-monosaccharide-1-phosphate uridylyltransferase
2.7.7.83 UDP-N-acetylgalactosamine diphosphorylase UTP:N-acetyl-alpha-D-galactosamine-1-phosphate uridylyltransferase
2.7.7.9 UTP-glucose-1-phosphate uridylyltransferase UTP:alpha-D-glucose-1-phosphate uridylyltransferase
5.3.1.9 glucose-6-phosphate isomerase alpha-D-glucose-6-phosphate aldose-ketose-isomerase (configuration-inverting)
5.4.2.2 phosphoglucomutase (alpha-D-glucose-1,6-bisphosphate-dependent) alpha-D-glucose 1,6-phosphomutase


Proteins

Protein ID name full name