HAS1

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. HAS1 is a member of the newly identified vertebrate gene family encoding putative hyaluronan synthases, and its amino acid sequence shows significant homology to the hasA gene product of Streptococcus pyogenes, a glycosaminoglycan synthetase (DG42) from Xenopus laevis, and a recently described murine hyaluronan synthase. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

Description

Hyaluronan synthase 1

Tissue specificity

Tissue enhanced (adipose tissue, ovary)

Subcell location

Nucleoplasm, Plasma membrane

Predicted location

Intracellular, Membrane

Protein family

Enzymes
Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Metabolic proteins
Predicted intracellular proteins
Predicted membrane proteins
Transporters

Chromosome

19 (51713112 - 51723991)

Ensembl ID

ENSG00000105509  (ver. 103.38)

Orthologs

Mouse Has1: ENSMUSG00000003665

UniProt

Q92839

neXtProt

NX_Q92839

Human splice variants
Mouse splice variants

Protein structure