CATH Classification

Domain Context

CATH Clusters

Superfamily Glycogen Phosphorylase B;
Functional Family Starch synthase, chloroplastic/amyloplastic

Enzyme Information

2.4.1.242
NDP-glucose--starch glucosyltransferase.
based on mapping to UniProt Q0DEV5
NDP-alpha-D-glucose + ((1->4)-alpha-D-glucosyl)(n) = NDP + ((1->4)-alpha- D-glucosyl)(n+1).
-!- Unlike EC 2.4.1.11 and EC 2.4.1.21 which use UDP-glucose and ADP- glucose, respectively, this enzyme can use either UDP- or ADP- glucose. -!- Mutants that lack the Wx (waxy) allele cannot produce this enzyme, which plays an important role in the normal synthesis of amylose. -!- In such mutants, only amylopectin is produced in the endosperm or pollen.

UniProtKB Entries (1)

Q0DEV5
SSG1_ORYSJ
Oryza sativa Japonica Group
Granule-bound starch synthase 1, chloroplastic/amyloplastic

PDB Structure

PDB 3VUF
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Interdomain Disulfide Bridge in the Rice Granule Bound Starch Synthase I Catalytic Domain as Elucidated by X-Ray Structure Analysis
Momma, M., Fujimoto, Z.
Biosci.Biotechnol.Biochem.