Hyaluronan or hyaluronic acid (HA) is a high molecular weight unbranched polysaccharide synthesized by a wide variety of organisms from bacteria to mammals, and is a constituent of the extracellular matrix. It consists of alternating glucuronic acid and N-acetylglucosamine residues that are linked by beta-1-3 and beta-1-4 glycosidic bonds. HA is synthesized by membrane-bound synthase at the inner surface of the plasma membrane, and the chains are extruded through pore-like structures into the extracellular space. It serves a variety of functions, including space filling, lubrication of joints, and provision of a matrix through which cells can migrate. HA is actively produced during wound healing and tissue repair to provide a framework for ingrowth of blood vessels and fibroblasts. Changes in the serum concentration of HA are associated with inflammatory and degenerative arthropathies such as rheumatoid arthritis. In addition, the interaction of HA with the leukocyte receptor CD44 is important in tissue-specific homing by leukocytes, and overexpression of HA receptors has been correlated with tumor metastasis. HAS2 is a member of the newly identified vertebrate gene family encoding putative hyaluronan synthases, and its amino acid sequence shows significant homology to glycosaminoglycan synthetase (DG42) from Xenopus laevis, and human and murine hyaluronan synthase 1. [provided by RefSeq, Jul 2008]
Overall distribution
Tissue specific distribution
Overall distribution
Tissue specific distribution
Gscore (Amp):
0.57
Gscore (Del):
0.00
Recurrently amplified in 3 cancer type(s)
Overall distribution
Tissue specific distribution
Mscore:
0.00
Overall
Tissue specific
Total fusion occurrence:
1
Fusions detected in 1 cancer type(s)
Overall
Tissue specific
Functional class:
Enzyme
JensenLab PubMed score:
287.44 (Percentile rank: 85.75%)
PubTator score:
328.44 (Percentile rank: 90.43%)
Target development/druggability level:
TbioThese targets do not have known drug or small molecule activities that satisfy the activity thresholds detailed below AND satisfy one or more of the following criteria: 1) target is above the cutoff criteria for Tdark; 2) target is annotated with a Gene Ontology Molecular Function or Biological Process leaf term(s) with an Experimental Evidence code.
Tractability (small molecule):
N/A
Tractability (antibody):
Predicted Tractable - Medium to low confidenceTargets with GO cell component terms plasma membrane or secreted with low or unknown confidence; Targets with predicted signal peptide and transmembrane domains; GO cell component - medium confidence; Human Protein Atlas - high confidence
