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Details on Person UniProt:Q53JI9 SPS5

Class:IdReferenceGeneProduct:1162089
_chainChangeLogchain:1-1014 added on Fri February 6 2015
_displayNameUniProt:Q53JI9 SPS5
_timestamp2025-02-21 19:23:09
chainchain:1-1014
checksum6AF4C8059E23B842
commentFUNCTION Plays a role in photosynthetic sucrose synthesis by catalyzing the rate-limiting step of sucrose biosynthesis from UDP-glucose and fructose- 6-phosphate. Involved in the regulation of carbon partitioning in the leaves of plants. May regulate the synthesis of sucrose and therefore play a major role as a limiting factor in the export of photoassimilates out of the leaf. Plays a role for sucrose availability that is essential for plant growth and fiber elongation (By similarity).CATALYTIC ACTIVITY beta-D-fructose 6-phosphate + UDP-alpha-D-glucose = sucrose 6(F)-phosphate + UDP + H(+)ACTIVITY REGULATION Activity is regulated by phosphorylation and moderated by concentration of metabolites and light.PATHWAY Glycan biosynthesis; sucrose biosynthesis; sucrose from D-fructose 6-phosphate and UDP-alpha-D-glucose: step 1/2.SUBUNIT Homodimer or homotetramer.TISSUE SPECIFICITY Expressed in germinating seeds.DEVELOPMENTAL STAGE Expressed in source leaves and sink leaves.INDUCTION Circadian-regulated, with the highest expression 1 hour after the beginning of dark period (in 14 hours light/10 hours dark cycle).SIMILARITY Belongs to the glycosyltransferase 1 family.
created[InstanceEdit:1164949] Wu, Guanming, 2010-12-11
crossReference[DatabaseIdentifier:1135003] UniProtKB:Q53NB0
[DatabaseIdentifier:1134367] UniProtKB:Q53JI9
[DatabaseIdentifier:1133648] UniProtKB:B8BJU1
descriptionrecommendedName: Probable sucrose-phosphate synthase 5 ecNumber: 2.4.1.14 alternativeName: Sucrose phosphate synthase 5F shortName: OsSPS5F alternativeName: UDP-glucose-fructose-phosphate glucosyltransferase
geneNameSPS5
SPS11
Os11g0236100
LOC_Os11g12810
identifierQ53JI9
isSequenceChangedFALSE
keywordGlycosyltransferase
Reference proteome
Transferase
modified[InstanceEdit:5151377] D'Eustachio, P, 2013-11-20
[InstanceEdit:5263031] Weiser, JD
[InstanceEdit:5433710] Weiser, JD
[InstanceEdit:5634237] Weiser, JD
[InstanceEdit:5673015] Weiser, JD
[InstanceEdit:9037114] Weiser, JD
[InstanceEdit:9627708] Weiser, JD
[InstanceEdit:9637257] Weiser, JD
[InstanceEdit:9657908] Weiser, JD
[InstanceEdit:9676415] Weiser, JD
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9939033] Weiser, Joel, 2025-02-21
nameSPS5
referenceDatabase[ReferenceDatabase:2] UniProt
secondaryIdentifierSPSA5_ORYSJ
Q0ITN3
Q53NB0
sequenceLength1014
species[Species:1250427] Oryza sativa subsp. japonica
(referenceEntity)[EntityWithAccessionedSequence:1129991] sucrose-phosphate synthase (LOC_OS11G12810.1) [cytosol] [Oryza sativa]
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