GNA1/YFL017C Summary Help

GNA1 BASIC INFORMATION

Standard Name GNA1
Systematic Name YFL017C
Alias PAT1 1
Feature Type ORF, Verified
Description Evolutionarily conserved glucosamine-6-phosphate acetyltransferase required for multiple cell cycle events including passage through START, DNA synthesis, and mitosis; involved in UDP-N-acetylglucosamine synthesis, forms GlcNAc6P from AcCoA (1, 2, 3 and see Summary Paragraph)
Name Description GlucosamiNe-6-phosphate Acetyltransferase 2
GO Annotations All GNA1 GO evidence and references
    View Computational GO annotations for GNA1
Molecular Function
Manually curated
Biological Process
Manually curated
Cellular Component
High-throughput
Pathways
Mutant Phenotype All GNA1 Phenotype details and references
Large-scale survey
conditional
null
overexpression
Interactions GNA1 All interactions details and references
11 total interaction(s) for 9 unique genes/features.
Physical Interactions
  • Affinity Capture-MS: 2
  • Co-crystal Structure: 1
  • Reconstituted Complex: 1
  • Two-hybrid: 7
Sequence Information
ChrVI:104456 to 103977 | ORF Map | GBrowse
Note: this feature is encoded on the Crick strand.
Gbrowse
Last Update Coordinates: 1996-07-31 | Sequence: 1996-07-31
Subfeature details
Relative
Coordinates		 Chromosomal
Coordinates		 Most Recent Updates
Coordinates Sequence
CDS 1..480 104456..103977 1996-07-31 1996-07-31
External Links All Associated Seq | E.C. | Entrez Gene | Entrez RefSeq Protein | MIPS | UniProtKB
Primary SGDIDS000001877

GNA1 RESOURCES

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SGD ORF map
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  • Functional Analysis

Click on histogram for expression summary
Expression Summary histogram

ADDITIONAL INFORMATION for GNA1

NOMENCLATURE CONFLICT NOTE

NameRelevanceDescription
PXA2Nomenclature conflictPAT1 has been used in the literature to refer to both PXA2/YKL188C, which encodes a ABC transporter-2, and GNA1/YFL017C, which encodes a glucosamine-phosphate N-acetyltransferase.
PAT1Nomenclature conflictPAT1 has been used in the literature to refer to both PAT1/YCR077C, which is involved in translational initiation and chromosome segregation and GNA1/YFL017C, which encodes a glucosamine-phosphate N-acetyltransferase.

SUMMARY PARAGRAPH for GNA1

UDP-N-acetyl-D-glucosamine (UDP-GlcNAc) is the source of the first two GlcNAc moieties added during N-linked glycosylation of proteins and provides GlcNAc for synthesis of GPI anchors. In yeast, it is synthesized from fructose-6-phosphate (F6P) by the consecutive action of Gfa1p, Gna1p, Pcm1p, and Qri1p, although a different pathway (4, 5) is used in bacteria. UDP-GlcNAc is also the building block from which chitin, a linear polymer of beta-1,4-N-acetylglucosamine, is constructed. Chitin is a component of the cell wall deposited as a ring around the neck of the growing bud during cell division. Bud scars, the remnants of the chitinous primary septum seen on the surface of mother cells after division, are the primary repository of chitin (reviewed in 6).

GNA1 encodes glucosamine-6-phosphate acetyltransferase (EC 2.3.1.4), which adds an acetyl group to GlcN6P in the UDP-GlcNAc biosynthesis pathway (2). GNA1 is an essential gene (2). As with PCM1 and QRI1, conditional depletion of Gna1p causes cells to swell and lyse (1, 2) and to form strings of four to five cells (1). The S. pombe homolog spPAT1 complements deletion of GNA1 (1).

Last updated: 2005-07-05

REFERENCES CITED ON THIS PAGE [View Complete Literature Guide for GNA1]

1) Lin R, et al.  (1996) PAT1, an evolutionarily conserved acetyltransferase homologue, is required for multiple steps in the cell cycle. Genes Cells 1(10):923-42
2) Mio T, et al.  (1999) Saccharomyces cerevisiae GNA1, an essential gene encoding a novel acetyltransferase involved in UDP-N-acetylglucosamine synthesis. J Biol Chem 274(1):424-9
3) Peneff C, et al.  (2001) The crystal structures of Apo and complexed Saccharomyces cerevisiae GNA1 shed light on the catalytic mechanism of an amino-sugar N-acetyltransferase. J Biol Chem 276(19):16328-34
4) Mengin-Lecreulx D and van Heijenoort J  (1993) Identification of the glmU gene encoding N-acetylglucosamine-1-phosphate uridyltransferase in Escherichia coli. J Bacteriol 175(19):6150-7
5) Mengin-Lecreulx D and van Heijenoort J  (1994) Copurification of glucosamine-1-phosphate acetyltransferase and N-acetylglucosamine-1-phosphate uridyltransferase activities of Escherichia coli: characterization of the glmU gene product as a bifunctional enzyme catalyzing two subsequent steps in the pathway for UDP-N-acetylglucosamine synthesis. J Bacteriol 176(18):5788-95
6) Cid VJ, et al.  (1995) Molecular basis of cell integrity and morphogenesis in Saccharomyces cerevisiae. Microbiol Rev 59(3):345-86