N-acetylgalactosamine kinase

N-acetylgalactosamine kinase
Identifiers
EC number	2.7.1.157
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles

In enzymology, a N-acetylgalactosamine kinase (EC 2.7.1.157) is an enzyme that catalyzes the chemical reaction

ATP + N-acetyl-D-galactosamine $\rightleftharpoons$ ADP + N-acetyl-alpha-D-galactosamine 1-phosphate

Thus, the two substrates of this enzyme are ATP and N-acetyl-D-galactosamine, whereas its two products are ADP and N-acetyl-alpha-D-galactosamine 1-phosphate.

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:N-acetyl-D-galactosamine 1-phosphotransferase. Other names in common use include GALK2, GK2, GalNAc kinase, and N-acetylgalactosamine (GalNAc)-1-phosphate kinase.

References

• Pastuszak I, Drake R, Elbein AD (1996). "Kidney N-acetylgalactosamine (GalNAc)-1-phosphate kinase, a new pathway of GalNAc activation". J. Biol. Chem. 271 (34): 20776–82. doi:10.1074/jbc.271.34.20776. PMID 8702831. 
• Pastuszak I, O'Donnell J, Elbein AD (1996). "Identification of the GalNAc kinase amino acid sequence". J. Biol. Chem. 271 (39): 23653–6. doi:10.1074/jbc.271.39.23653. PMID 8798585. 
• Thoden JB, Holden HM (2005). "The molecular architecture of human N-acetyl galactosamine kinase". J. Biol. Chem. (38): 32784–91. doi:10.1074/jbc.M505730200. PMID 16006554. 

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