Izvorni kod stranice GDP-L-galaktoza fosforilaza

{{Infobox Enzim
| Name = GDP-L-galaktoza fosforilaza
| EC_number = 2.7.7.69
| CAS_number = 
| IUBMB_EC_number = 2/7/7/69
| GO_code = 
| image = 
| width = 
| caption =
}}
'''GDP-L-galaktoza fosforilaza''' ({{EC broj|2.7.7.69}}, ''VTC2'', ''VTC5'') je [[enzim]] sa sistematskim imenom ''GDP:alfa-L-galaktoza 1-fosfat guanililtransferaza''.<ref>{{cite journal | title = Arabidopsis VTC2 encodes a GDP-<small>L</small>-galactose phosphorylase, the last unknown enzyme in the Smirnoff-Wheeler pathway to ascorbic acid in plants |author = Linster, C.L., Gomez, T.A., Christensen, K.C., Adler, L.N., Young, B.D., Brenner, C. and Clarke, S.G. |journal = J. Biol. Chem. |date = 2007 |volume = 282 |pages = 18879-18885 |pmid = 17462988}}</ref><ref>{{cite journal | title = A second GDP-<small>L</small>-galactose phosphorylase in arabidopsis en route to vitamin C. Covalent intermediate and substrate requirements for the conserved  reaction |author = Linster, C.L., Adler, L.N., Webb, K., Christensen, K.C., Brenner, C. and Clarke, S.G. |journal = J. Biol. Chem. |date = 2008 |volume = 283 |pages = 18483-18492 |pmid = 18463094}}</ref><ref>{{cite journal | title = Two genes in ''Arabidopsis thaliana'' encoding GDP-<small>L</small>-galactose phosphorylase are required for ascorbate biosynthesis and seedling viability |author = Dowdle, J., Ishikawa, T., Gatzek, S., Rolinski, S. and Smirnoff, N. |journal = Plant J. |date = 2007 |volume = 52 |pages = 673-689 |pmid = 17877701}}</ref><ref>{{cite journal | title = An expression analysis of the ascorbate biosynthesis enzyme VTC2 |author = Muller-Moule, P. |journal = Plant Mol. Biol. |date = 2008 |volume = 68 |pages = 31-41 |pmid = 18516687}}</ref> Ovaj enzim [[Kataliza|katalizuje]] sledeću [[hemijska reakcija|hemijsku reakciju]]

: GDP-L-galaktoza + [[fosfat]] <math>\rightleftharpoons</math> alfa-L-galaktoza 1-fosfat + GDP

Ovaj enzim katalizuje jednu od reakcija u Smirnof-Vilerovom putu, koji je glavni put biosinteze askorbata kod biljki.

== Reference ==
{{reflist}}

== Literatura ==
{{refbegin|2}}
* {{PriceEnzymology3rd}}
* {{TooneAdvancesInEnzymology}}
* {{Branden ProteinStructure2nd}}
* {{SegelEnzymeKinetics}}
* {{CopelandEvaluationOfEnzymeInhibitors2nd}}
* {{MichalBiochemicalPathways}}
{{refend}}

== Vanjske veze ==
* {{MeshName|GDP-L-galactose+phosphorylase}}

{{Enzimi}}

[[Kategorija:EC 2.7.7]]