SBE2.2 starch branching enzyme 2.2 [Arabidopsis thaliana (thale cress)] - Gene

Summary

Official Symbol: SBE2.2
Official Full Name: starch branching enzyme 2.2
Primary source: TAIR:AT5G03650
Locus tag: AT5G03650
See related: Araport:AT5G03650
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Arabidopsis thaliana (ecotype: Columbia)
Lineage: Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis
Also known as: F17C15.70; F17C15_70; starch branching enzyme 2.2
Summary: Encodes starch branching enzyme (E.C.2.4.1.18) similar to SBE2 from maize and rice. Expressed throughout the plant and highest in seedlings and cauline leaves.
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Chromosome 5 - NC_003076.8 Genomic Context describing neighboring genes

Go to nucleotide: Graphics FASTA GenBank

This work describes the enzymatic parameters of Arabidopsis BE2.2. It reveals for the first time conformational changes for a branching enzyme, leading to a positive cooperative binding process of this enzyme.
Title: Biochemical characterization of Arabidopsis thaliana starch branching enzyme 2.2 reveals an enzymatic positive cooperativity.
The cooperative action of starch synthase and branching enzyme isoforms results in glucans with polymodal chain length distribution similar to amylopectin.
Title: Analysis of the functional interaction of Arabidopsis starch synthase and branching enzyme isoforms reveals that the cooperative action of SSI and BEs results in glucans with polymodal chain length distribution similar to amylopectin.

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

NM_120446.4

Function	Evidence Code	Pubs
enables 1,4-alpha-glucan branching enzyme activity	IDA Inferred from Direct Assay more info	PubMed
enables 1,4-alpha-glucan branching enzyme activity	IEA Inferred from Electronic Annotation more info
enables 1,4-alpha-glucan branching enzyme activity	ISS Inferred from Sequence or Structural Similarity more info	PubMed
enables cation binding	IEA Inferred from Electronic Annotation more info
enables hydrolase activity, hydrolyzing O-glycosyl compounds	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
acts_upstream_of_or_within amylopectin biosynthetic process	TAS Traceable Author Statement more info	PubMed
involved_in glycogen biosynthetic process	IEA Inferred from Electronic Annotation more info
involved_in starch biosynthetic process	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within starch metabolic process	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
located_in chloroplast	HDA more info	PubMed
located_in chloroplast	ISM Inferred from Sequence Model more info
located_in chloroplast stroma	HDA more info	PubMed

NP_195985.3

starch branching enzyme 2.2 (SBE2.2); FUNCTIONS IN: 1,4-alpha-glucan branching enzyme activity; INVOLVED IN: amylopectin biosynthetic process, starch metabolic process; LOCATED IN: chloroplast, chloroplast stroma; EXPRESSED IN: 25 plant structures; EXPRESSED DURING: 15 growth stages; CONTAINS InterPro DOMAIN/s: Glycoside hydrolase, family 13, N-terminal (InterPro:IPR004193), Immunoglobulin E-set (InterPro:IPR014756), Glycoside hydrolase, catalytic core (InterPro:IPR017853), Alpha-amylase, C-terminal all beta (InterPro:IPR006048), Immunoglobulin-like fold (InterPro:IPR013783), Glycosyl hydrolase, family 13, all-beta (InterPro:IPR013780), Glycoside hydrolase, subgroup, catalytic core (InterPro:IPR013781), Glycosyl hydrolase, family 13, catalytic domain (InterPro:IPR006047); BEST Arabidopsis thaliana protein match is: starch branching enzyme 2.1 (TAIR:AT2G36390.1); Has 30201 Blast hits to 17322 proteins in 780 species: Archae - 12; Bacteria - 1396; Metazoa - 17338; Fungi - 3422; Plants - 5037; Viruses - 0; Other Eukaryotes - 2996 (source: NCBI BLink).