help  | faq  | software  | ARAPORT

Gene : SS4 A. thaliana

Gene ID  ? AT4G18240
Brief Description  starch synthase 4  Source: Araport11 (06/2016).
Is Obsolete?  false
Computational Description  ? starch synthase 4 (SS4); FUNCTIONS IN: transferase activity, transferring glycosyl groups; INVOLVED IN: starch metabolic process; LOCATED IN: chloroplast; EXPRESSED IN: 24 plant structures; EXPRESSED DURING: 13 growth stages; CONTAINS InterPro DOMAIN/s: Glycogen/starch synthases, ADP-glucose type (InterPro:IPR011835), Starch synthase, catalytic domain (InterPro:IPR013534), Glycosyl transferase, group 1 (InterPro:IPR001296); BEST Arabidopsis thaliana protein match is: starch synthase 3 (TAIR:AT1G11720.1).  Source: TAIR, Jun 30, 2015.
Name  ? starch synthase 4
  • synonyms:
  • ATSS4,
  • SSIV

Locus History Displayer

Publication Counts Displayer

4 GeneRIFs (Gene References Into Functions)

Data Source: NCBI

Annotation PubMed Id
In mutants the number of starch granules per plastid dramatically decreased leading to a large increase in their size. 17217470
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. 19666739
Overexpression of SSIV induces the accumulation of starch in Arabidopsis. 21645200
SS4 is an essential component of a mechanism that coordinates granule formation with chloroplast division during leaf expansion. 23952675


Sequence Feature Displayer

Gene Structure Displayer

J Browse Displayer

Overlapping Features Displayer

12 Flanking Regions

Flank size: from most upstream transcription start site, or most downstream transcription stop site

Region Name Flank Size Direction Length Gene Included? Chromosome Location
AT4G18240 0.5kb upstream 0.5kb upstream 5596   true Chr4: 10081608-10087203
AT4G18240 0.5kb upstream 0.5kb upstream 500   false Chr4: 10081608-10082107
AT4G18240 0.5kb downstream 0.5kb downstream 5596   true Chr4: 10082108-10087703
AT4G18240 0.5kb downstream 0.5kb downstream 500   false Chr4: 10087204-10087703
AT4G18240 1.0kb upstream 1.0kb upstream 6096   true Chr4: 10081108-10087203
AT4G18240 1.0kb upstream 1.0kb upstream 1000   false Chr4: 10081108-10082107
AT4G18240 1.0kb downstream 1.0kb downstream 6096   true Chr4: 10082108-10088203
AT4G18240 1.0kb downstream 1.0kb downstream 1000   false Chr4: 10087204-10088203
AT4G18240 3.0kb upstream 3.0kb upstream 8096   true Chr4: 10079108-10087203
AT4G18240 3.0kb upstream 3.0kb upstream 3000   false Chr4: 10079108-10082107
AT4G18240 3.0kb downstream 3.0kb downstream 8096   true Chr4: 10082108-10090203
AT4G18240 3.0kb downstream 3.0kb downstream 3000   false Chr4: 10087204-10090203


Protein Displayer


Gene Ontology Displayer

0 Pathways

Data Source: KEGG

Gene --> Ontology term

Gene --> Pathways


Plant Ontology Displayer

Bar Efp Browser Displayer

Array Expression

RNA-seq Expression


Save / Export






Cytoscape Network Displayer


Homologue Displayer

Phytomine Ortholog Displayer


Alelle Table Displayer

Stock Gene Table Displayer



10 Data Sets

Name Description Version
BAR Annotations Lookup Mapping(s) between AGI locus and Affy Probeset identifier 10/08/2013
Genome Annotation Araport11 protein-coding, non-coding and transposable element genes Araport11 (06/2016)
RNA-seq expression Measure of gene expression levels (Transcripts per Million, TPM) quantified by Salmon Araport11 (06/2016)
PubMed to gene mapping Curated associations between publications and NCBI Gene records 8/12/2016
GO Annotation from InterPro    
PO Annotation from TAIR Literature-based annotations of genes to Plant Ontology (PO) terms 06/30/2015
Swiss-Prot data set High-quality, manually annotated, non-redundant protein sequence database 2016_07
Panther data set PANTHER paralogs from Arabidopsis 11.0
GeneRIF Concise phrase describing gene function and publication associated with NCBI Gene records 8/12/2016
BioGRID interaction data set Curated set of genetic and physical interactions for Arabidopsis thaliana 3.4.139