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MPact protein interaction

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About CYGD

MIPS Fungal Genomes

mips home MIPS-FUNGI-ADM      FTP
SPT14 N-acetylglucosaminyltransferase 
Alias:CWH6; GPI3; P2269
Classification:known protein | 5422 Entries | Evi | PUBMED
Feature Type:CDS
   Blast-Simap    DNA VIEW    PROTEIN VIEW

Paralogs (17.3 %) ;  |  Homologs in   Hemiascomycota (95.3 %);  Basidiomycota (47.4 %);  Fungi (95.3 %);  Eukaryota (95.3 %);  Plants (46.1 %);  Mammalia (43.1 %);  Human (40.7 %);  Bacteria (23.9 %);  All except yeast (95.3 %)

  • strong similarity to mouse GPI-anchor biosynthesis protein PIG-A
  • has 44% identity over its whole length to human N-acetylglucosaminyl-phosphatidylinositol biosynthetic protein (PIG-A)
Functional Classification:
    ..lipid, fatty acid and isoprenoid metabolism
    ....membrane lipid metabolism
    ......phospholipid metabolism | 68 Entries | Evi | PUBMED
  • PROTEIN FATE (folding, modification, destination)
    ..protein modification
    ....modification with fatty acids (e.g. myristylation, palmitylation, farnesylation) | 33 Entries | Evi | PUBMED
Localization:  SPT14 localization details
  • ER
  • ambiguous
  • loss of human homolog causes paroxysmal nocturnal hemoglobinuria due to loss of a cell surface protein
    Phenotypes:  Disruption: SPT14 details
    • lethal
    • gpi3 mutant is temperature-sensitive for incorporation of [3H]-inositol into protein and for synthesis of GPI anchors
    • mutants are defective in synthesis of GlcNAc-phosphatidylinositol which is the first step in GPI anchor synthesis
    • mutants have transcriptional defects that may be secondary effects of loss of GPI-anchored proteins
    • mutants have altered regulation of his4 with upstream Ty element
    • spt14-2 cells have very slow growth, defects of transcription, cell separation defects, and a low rate of sphingolipid synthesis
    • mutants have retarded passage of cell wall precursors through the ER
    • mutants have proliferation of ER and retention of cell wall proteins
    • mutants secrete cell wall precursors into the medium
    • mutants have abnormal mannoprotein layer in cell wall and defective incorporation of some glucomannans
    • mutants accumulate alpha-agglutinin precursors and secrete alpha-agglutinin
    • mutants are calcofluor white sensitive | PUBMED
    • Conditional phenotypes
      ..Heat-sensitivity (ts) | 313 Entries
    • Cell morphology and organelle mutants
      ..Cell wall mutants
      ....Calcofluor white
      ......Calcofluor white sensitivity | 88 Entries
    • Cell morphology and organelle mutants
      ..Cell wall mutants
      ....other cell wall mutants | 73 Entries
    • Carbohydrate and lipid biosynthesis defects
      ..other carbohydrate and lipid biosynthesis defects | 36 Entries
    • Nucleic acid metabolism defects
      ..Transcriptional mutants
      ....other transcriptional mutants | 51 Entries
    Click for larger Map
    Physical Features
    Coordinates:218629 - 220087 (W)
    Length:1459 nt
    Exon Coordinates:218629 - 218645 | Evi | PUBMED
    218746 - 220087 | Evi | PUBMED
    GC Content:38.9 %
    Protein Length:452 aa
    Isoelectric Point:6.79
    Molecular Weight:51242.6 Da
    Retrieve Sequence: DNA /Protein
    Literature | References
    CYGD curated Lit.:PubMed
    PubMed:Search abstracts
    PubMed Central:Search full-text articles
    Sequence References:
    EMBL: Z73531
    EMBL: X63290
    PIR: S65187
    NCBI: NP_015150
    Additional Links:
    CYGD Tables:
  • The Yeast homologues of human disease-associated genes
  • LinkOut:
  • SGD - Saccharomyces Genome Database
  • YGOB - Yeast Gene Order Browser
  • yMGV - yeast Microarray Global Viewer

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