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Literature summary for 2.4.1.16 extracted from

  • Nung Jan, Y.
    Properties and cellular localization of chitin synthetase in Phycomyces blakesleeanus (1974), J. Biol. Chem., 249, 1973-1979.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
ATP 0.25 mM activates by 33%, concentrations up to 0.5 mM stimulate Phycomyces blakesleeanus
GlcNAc stimulates Phycomyces blakesleeanus

Inhibitors

Inhibitors Comment Organism Structure
ATP above 1 mM Phycomyces blakesleeanus
c3',5'-AMP 2 mM, slight inhibition Phycomyces blakesleeanus
Polyoxin D
-
Phycomyces blakesleeanus
UDP 0.5 mM, 28% inhibition Phycomyces blakesleeanus
UDPgalacturonic acid 1 mM, about 20% inhibition Phycomyces blakesleeanus
UDPglucose 1 mM, about 20% inhibition Phycomyces blakesleeanus
UDPglucuronic acid 1 mM, about 20% inhibition Phycomyces blakesleeanus
UDPmannose 1 mM, about 20% inhibition Phycomyces blakesleeanus
UDPxylose 1 mM, about 20% inhibition Phycomyces blakesleeanus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.6
-
UDP-GlcNAc
-
Phycomyces blakesleeanus

Localization

Localization Comment Organism GeneOntology No. Textmining
plasma membrane
-
Phycomyces blakesleeanus 5886
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ stimulates Phycomyces blakesleeanus

Organism

Organism UniProt Comment Textmining
Phycomyces blakesleeanus
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
mycelium
-
Phycomyces blakesleeanus
-
sporangiospore
-
Phycomyces blakesleeanus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
UDP-N-acetyl-D-glucosamine + [1,4-(N-acetyl-beta-D-glucosaminyl)]n
-
Phycomyces blakesleeanus UDP + [1,4-(N-acetyl-beta-D-glucosaminyl)]n+1 chitin ?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
28
-
-
Phycomyces blakesleeanus

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
27 42 50% of maximal activity at 17°C and at 42°C Phycomyces blakesleeanus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5
-
-
Phycomyces blakesleeanus