2.4.1.212: hyaluronan synthase
This is an abbreviated version!
For detailed information about hyaluronan synthase, go to the full flat file.
Word Map on EC 2.4.1.212
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2.4.1.212
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glycosaminoglycans
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collagen
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polysaccharide
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keratinocytes
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cartilage
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4-methylumbelliferone
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proteoglycans
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hyaluronidases
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chondrocytes
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dermal
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mesenchymal
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pericellular
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pasteurella
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udp-glucuronic
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hyals
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versican
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cumulus
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synovial
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vocal
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articular
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aggrecan
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osteoarthritis
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streptococcal
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udp-n-acetylglucosamine
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multocida
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rhamm
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pyogenes
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udp-sugars
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chondroitin
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glucuronic
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procollagen
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synoviocytes
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cumulus-oocyte
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decorin
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udp-glcua
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photoaging
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filaggrin
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equisimilis
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ha-binding
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temporomandibular
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glcua
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perineuronal
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ophthalmopathy
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zooepidemicus
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uvb-irradiated
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ha-mediated
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tnfaip6
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medicine
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hyaluronan-binding
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fibromodulin
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biglycan
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analysis
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synthesis
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drug development
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biotechnology
- 2.4.1.212
- glycosaminoglycans
- collagen
- polysaccharide
- keratinocytes
- cartilage
- 4-methylumbelliferone
- proteoglycans
- hyaluronidases
- chondrocytes
-
dermal
- mesenchymal
-
pericellular
- pasteurella
-
udp-glucuronic
-
hyals
- versican
-
cumulus
- synovial
-
vocal
-
articular
- aggrecan
- osteoarthritis
- streptococcal
- udp-n-acetylglucosamine
- multocida
-
rhamm
- pyogenes
- udp-sugars
- chondroitin
-
glucuronic
- procollagen
- synoviocytes
-
cumulus-oocyte
- decorin
- udp-glcua
-
photoaging
- filaggrin
- equisimilis
-
ha-binding
-
temporomandibular
-
glcua
-
perineuronal
- ophthalmopathy
- zooepidemicus
-
uvb-irradiated
-
ha-mediated
-
tnfaip6
- medicine
-
hyaluronan-binding
- fibromodulin
- biglycan
- analysis
- synthesis
- drug development
- biotechnology
Reaction
Synonyms
CHAS2, CHAS3, class I hyaluronan synthase, CPS1, DG42 protein, HA synthase, HA synthase 3, HA1, HA2, HA3, HAS, HAS-1, HAS-2, HAS-3, HAS1, Has2, Has3, hasA, HASs, HsHAS1, HuHAS1, HyaD, hyaluronan synthase, hyaluronan synthase 1, hyaluronan synthase 2, hyaluronan synthase 3, hyaluronan synthase-1, hyaluronan synthase-2, hyaluronan synthases 2, hyaluronan synthethase, hyaluronate synthase, hyaluronate synthetase, hyaluronic acid synthase, hyaluronic acid synthetase, More, PmHAS, seHAS, XHAS1, XHAS2, XHAS3
ECTree
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Metals Ions
Metals Ions on EC 2.4.1.212 - hyaluronan synthase
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Co2+
K+
coactivation occurs if K+ is applied together with Mn2+ or Mg2+. With Mn2+, a high UDP reaction rate and high molecular mass of hyaluronic acid (2.45 MDa after 8 h) are achieved. With Mg2+, a low reaction rate and low molecular mass (1.55 MDa after 8 h) are reached. If 10 mM K+ are added to 15 mM Mg2+, a significant increase of the reaction rate by a factor of 2.7 is observed, and the molecular mass is doubled (3.11 MDa after 8 h). The coactivating effect of K+ together with Mn2+ is less pronounced
KCl
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activates at 50 mM, slightly more effective than NaCl
Mg2+
Mn2+
NaCl
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activates at 50 mM, slightly less effective than KCl
additional information
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metal requirements of mutant enzymes, overview
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2% as effective as Mn2+ at similar concentrations
Co2+
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18% and 39% of the wild-type GlcUA-transferase and GlcNAc-transferase activity with Mn2+, respectively, 0.2 mM
Mg2+
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20% as effective as Mn2+ at similar concentrations
Mg2+
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66% and 77% of the wild-type GlcUA-transferase and GlcNAc-transferase activity with Mn2+, respectively, 0.2 mM
Mg2+
Mg2+ activates with an optimum of 15-20 mM leading to about half of the yield obtained with Mn2+ after 8 h
Mg2+
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a nucleotide with 2 phosphate groups and complexed with a Mg2+ ion is absolutely required for activity
Mn2+
Mn2+ is the preferred metal ion with an optimum of 10 mM. Presence of Mn2+ induces a concentration-dependent decomposition of UDP-GlcA to its 1,2-cyclic phosphate and UMP, especially promoted at basic pH