Hyaluronan metabolism

Summary
Organism
Homo sapiens (human)
Reactome
R-HSA-2142845
PubChem
R-HSA-2142845
Description
  • Hyaluronan (hyaluronic acid, hyaluronate or HA) is an anionic glycosaminoglycan (GAG) distributed widely throughout connective, epithelial, and neural tissues and most abundant in the extracellular matrix and skin. HA is unique among the GAGs in that it is not sulfated and is not found covalently attached to proteins as a proteoglycan. HA polymers are very large (they can reach molecular weights of 10 million Da) and can displace a large volume of water making them excellent lubricators and shock absorbers. Another unique feature of HA is that it is synthesized at the plasma membrane unlike other GAGs which are formed in the Golgi. HA is a polymer of the disaccharide unit D-glucuronic acid and D-N-acetylglucosamine, linked via alternating beta-1,4 and beta-1,3 glycosidic bonds (Toole 2000, 2004, Volpi et al. 2009).
Click on a node on the pathway to see its details. Glycoproteins are marked with a glycoprotein icon in their name.
Displaying all 8 entries
UniProt ID Protein Name Gene Symbol Pathway Viewer
O00219 Hyaluronan synthase 3
  • HAS3
view
O15440 ATP-binding cassette sub-family C member 5
  • ABCC5
  • MRP5
view
O75330 Hyaluronan mediated motility receptor
  • HMMR
  • IHABP
  • RHAMM
view
P16070 CD44 antigen
  • CD44
  • LHR
  • MDU2
  • MDU3
  • MIC4
view
Q12891 Hyaluronidase-2
  • HYAL2
  • LUCA2
view
Q8WWQ8 Stabilin-2
  • FEEL2
  • FELL
  • FEX2
  • HARE
  • STAB2
view
Q92819 Hyaluronan synthase 2
  • HAS2
view
Q9Y5Y7 Lymphatic vessel endothelial hyaluronic acid receptor 1
  • CRSBP1
  • HAR
  • LYVE1
  • UNQ230/PRO263
  • XLKD1
  • hCG_23149
view
Displaying 1 entry
GlyTouCan ID KEGG GLYCAN ChEBI Pathway Viewer
G35674CY
view

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Acknowledgements

Supported by JST NBDC Grant Number JPMJND2204

Partly supported by NIH Common Fund Grant #1U01GM125267-01


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Last updated: April 6, 2026