Accession | Q9S7U4 | ||||||||||||
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Species | Oryza sativa (japonica cultivar-group) [ GR_tax:013684 ] | ||||||||||||
Name | Granule-bound starch synthase | ||||||||||||
Symbol | Waxy | ||||||||||||
Synonyms (11) |
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E.C. Numbers (1) | 2.4.1.21 | ||||||||||||
Gene Names (1) | WX1 (GLUTINOUS ENDOSPERM) | ||||||||||||
Organelle | Not available | ||||||||||||
Best Hits To TIGR Rice Gene Models (0) | None | ||||||||||||
IRGSP/RAP Genes (0) | None | ||||||||||||
Source | TREMBL | ||||||||||||
GenBank Accessions (1) | AAC61675 | ||||||||||||
UniProt Accession (Sequence) | Q9S7U4 | ||||||||||||
Cultivar | LEMONT ( GRIN , IRIS ) | ||||||||||||
Comment | The Waxy (Wx) gene encodes a granule-bound starch synthase (GBSS) that plays a key role in the amylose synthesis of rice. It is expressed in the seed endosperm and pollen grains, that carry starcg grains. At sub-cellular level the protein is localized in the amyloplasts. This gene undergoes alternative splicing of its transcripts suggesting that the amylose content of rice endosperm is regulated at the level of Wx transcript processing, and more specifically, at the stage of intron I excision from the Wx pre-mRNA. The alternative splicing is affected by the change in temperature. It is a single copy gene in rice. The Waxy (Wx) gene encodes a granule-bound starch synthase (GBSS) that plays a key role in the amylose synthesis of rice. It is expressed in the seed endosperm and pollen grains, that carry starch grains. At sub-cellular level the protein is localized in the amyloplasts. This gene undergoes alternative splicing of its transcripts suggesting that the amylose content of rice endosperm is regulated at the level of Wx transcript processing, and more specifically, at the stage of intron I excision from the Wx pre-mRNA. The alternative splicing is affected by the change in temperature. It is a single copy gene in rice. The phenotype shows white and non-translucent endosperm which turns brown to the iodine staining. (Imported from Gene GR:0061010) |
Term Type | Term | Reference | Evidence |
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Molecular Function | glycogen (starch) synthase activity (GO:0004373) | gramene.protein:P19395 | ISS |
Larkin-P-D et al., 1999 | IEP | ||
Frances-H et al., 1998 | IEP | ||
Biological Process | starch metabolic process (GO:0005982) | gramene.protein:P19395 | ISS |
Larkin-P-D et al., 1999 | IEP | ||
Frances-H et al., 1998 | IEP | ||
Cellular Component | amyloplast (GO:0009501) | gramene.protein:P19395 | ISS |
amyloplast starch grain (GO:0009568) | Jaiswal-P et al., 2006 | IC | |
Plant Structure | endosperm (PO:0009089) | Jaiswal-P et al., 2006 | IC |
Trait | glutinous endosperm (TO:0000098) | Jaiswal-P et al., 2006 | IC |
Viridiplantae Green plants -Embryophytes (plants) -Magnoliophytes (flowering plants) -Monocots | Grasses | Rice | Maize | Sorghum | Wheat | Barley | Rye | Oat | Sugarcane   -Dicots | Brassicaceae | Arabidopsis | Fabaceae (Legumes) | Solanaceae | Cucurbitaceae |
Others : Fungi | Metazoa |
3D protein structures : BLink from NCBI |
Pfam (Info) | PF00534; Glycos_transf_1 | All Members of this Family | |
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Prosite (Info) | Not available | ||
Physio-chemical features | Q9S7U4 | ||
ProtoMap (Info) | Q9S7U4_ORYSA | ||
Feature Type | Residues (From - To) | Evidence | |
Signal peptide | 1 - 76 | Jaiswal-P et al., 2002 | |
Transmembrane | 71 - 93 | Jaiswal-P et al., 2004 |