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- Table of Contents
Facts about UDP-N-acetylhexosamine pyrophosphorylase.
Converts UTP and GlcNAc-1-P into UDP-GlcNAc, and UTP and GalNAc-1-P into UDP-GalNAc.
Isoform AGX1 has 2 to 3 times higher activity towards GalNAc-1-P, while isoform AGX2 has 8 times more action towards GlcNAc-1-P..
Human | |
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Gene Name: | UAP1 |
Uniprot: | Q16222 |
Entrez: | 6675 |
Belongs to: |
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UDPGP type 1 family |
AGX; AGX1; AGX2; Antigen X; EC 2.7.7; EC 2.7.7.23; EC 2.7.7.27; SPAG2; sperm associated antigen 2; Sperm-associated antigen 2; UDP-N-acetylhexosamine pyrophosphorylase; UDP-N-acteylglucosamine pyrophosphorylase 1
Mass (kDA):
58.769 kDA
Human | |
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Location: | 1q23.3 |
Sequence: | 1; NC_000001.11 (162561440..162599843) |
Widely expressed. Isoform AGX1 is more abundant in testis than isoform AGX2, while isoform AGX2 is more abundant than isoform AGX1 in somatic tissue. Expressed at low level in placenta, muscle and liver.
Cytoplasm. In spermatozoa, localized to the principal piece of the tail, the neck region of the head and to a lesser extent, the midpiece of the tail.
PMID: 8025165 by Diekman A.B., et al. Characterization of a human antigen with sera from infertile patients.
PMID: 9603950 by Mio T., et al. The eukaryotic UDP-N-acetylglucosamine pyrophosphorylases: gene cloning, protein expression, and catalytic mechanism.