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GBSS1
Arabidopsis thaliana · Granule-bound starch synthase 1, chloroplastic/amyloplastic (EC 2.4.1.242)
GT5Model organism · annotation ≥ 4Fold GT-BRetaining
External resources
Identification and annotation
| CAZy family | GT5 · CAZy entry |
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| Gene symbol | GBSS1 |
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| Synonyms / alternate names | - GBS1
- GBSS
- WAXY
- Granule-bound starch synthase I
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| UniProt accession | Q9MAQ0 |
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| NCBI Gene ID | 840184 |
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| Source species | Arabidopsis thaliana |
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| Taxonomic domain | Eukaryota |
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| UniProt annotation level | 5 |
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Function and localisation
| Enzyme function | Granule-bound starch synthase 1, chloroplastic/amyloplastic (EC 2.4.1.242) |
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| Subcellular location | |
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Structure and mechanism
| Fold type | GT-B |
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| Catalytic mechanism | Retaining |
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| Cation dependence | No |
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| Oligomeric state | Interacts with PTST. This interaction is critical for the lo |
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| PDB structures | not curated |
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Donor and acceptor specificity
| Sugar nucleotide donor | an NDP-alpha-D-glucose |
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| Donor CCD code(s) | not curated |
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| Acceptor substrate(s) | [(1->4)-alpha-D-glucosyl](n) |
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| Acceptor CCD / GlycoCT | not curated |
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Protein sequences
Full protein sequence
610 aa
MATVTASSNFVSRTSLFNNHGASSCSDVAQITLKGQSLTHCGLRSFNMVDNLQRRSQAKPVSAKSSKRSSKVKTAGKIVCEKGMSVIFIGAEVGPWSKTGGLGDVLGGLPPALAARGHRVMTICPRYDQYKDAWDTCVVVQIKVGDKVENVRFFHCYKRGVDRVFVDHPIFLAKVVGKTGSKIYGPITGVDYNDNQLRFSLLCQAALEAPQVLNLNSSKYFSGPYGEDVVFVANDWHTALLPCYLKSMYQSRGVYMNAKVVFCIHNIAYQGRFAFDDYSLLNLPISFKSSFDFMDGYEKPVKGRKINWMKAAILEAHRVLTVSPYYAQELISGVDRGVELHKYLRMKTVSGIINGMDVQEWNPSTDKYIDIKYDITTVTDAKPLIKEALQAAVGLPVDRDVPVIGFIGRLEEQKGSDILVEAISKFMGLNVQMVILGTGKKKMEAQILELEEKFPGKAVGVAKFNVPLAHMITAGADFIIVPSRFEPCGLIQLHAMRYGTVPIVASTGGLVDTVKDGYTGFHIGRFNVKCEVVDPDDVIATAKAVTRAVAVYGTSAMQEMVKNCMDQDFSWKGPARLWEKVLLSLNVAGSEAGTEGEEIAPLAKENVATP
Catalytic domain sequence
130 aa
DRDVPVIGFIGRLEEQKGSDILVEAISKFMGLNVQMVILGTGKKKMEAQILELEEKFPGKAVGVAKFNVPLAHMITAGADFIIVPSRFEPCGLIQLHAMRYGTVPIVASTGGLVDTVKDGYTGFHIGRFN
