SS4 Antibody

1. Results indicate that plastidal phosphorylase (PHS1) and starch synthase 4 (SS4) are differently involved in starch granule formation and do not act in series. PMID: 28275148
2. the N-terminal part of SS4 serves to establish the correct granule morphology by properly localizing this activity. PMID: 29133376
3. SS4 plays a key role in granule initiation, allowing it to proceed in a way that avoids premature degradation of primers by starch hydrolases, such as AMY3. PMID: 27458017
4. SS4 forms dimers, which depends on a region located between the coiled-coil region and the glycosyltransferase domain of SS4. This region is highly conserved between all SS4 enzymes sequenced to date. We show that the dimerization seems to be necessary for the activity of the enzyme. PMID: 26969163
5. SS4 is an essential component of a mechanism that coordinates granule formation with chloroplast division during leaf expansion. PMID: 23952675
6. Overexpression of SSIV induces the accumulation of starch in Arabidopsis. PMID: 21645200
7. In mutants the number of starch granules per plastid dramatically decreased leading to a large increase in their size. PMID: 17217470
8. The data point to a complex mechanism for starch granule formation and to the different abilities of SSIV and SSIII to support this process in Arabidopsis leaves. PMID: 19666739

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KEGG: ath:AT4G18240

STRING: 3702.AT4G18240.1

UniGene: At.46236