CATH Classification

Domain Context

CATH Clusters

Superfamily 3.40.50.1360
Functional Family Glucosamine-6-phosphate isomerase

Enzyme Information

3.5.99.6
Glucosamine-6-phosphate deaminase.
based on mapping to UniProt P46926
Alpha-D-glucosamine 6-phosphate + H(2)O = D-fructose 6-phosphate + NH(3).
-!- Isomerization of the aldose-ketose type converts the -CH(-NH(2))-CH=O group of glucosamine 6-phosphate into -C(=NH)-CH(2)-OH, forming 2-deoxy-2-imino-D-arabino-hexitol which then hydrolyzes to yield fructose 6-phosphate and ammonia. -!- N-acetyl-D-glucosamine 6-phosphate, which is not broken down, activates the enzyme. -!- Formerly EC 5.3.1.10.

UniProtKB Entries (1)

P46926
GNPI1_HUMAN
Homo sapiens
Glucosamine-6-phosphate isomerase 1

PDB Structure

PDB 1NE7
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Two mammalian glucosamine-6-phosphate deaminases: a structural and genetic study.
Arreola, R., Valderrama, B., Morante, M.L., Horjales, E.
Febs Lett.