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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. [6]
There are three mammalian hyaluronan synthases described to date - HAS1, HAS2, and HAS3. Each of these isoforms resides at a different chromosome location [ 2 ] and has been cloned . [ 3 ] Two of the main differences between the isoforms are the chain length of the hyaluronan molecules that they produce and the ease with which they can be ...
Hyaluronan synthase 2 is an enzyme that in humans is encoded by the HAS2 gene. [ 5 ] [ 6 ] Hyaluronan or hyaluronic acid 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 .
Hyaluronan synthase 3 is an enzyme that in humans is encoded by the HAS3 gene. [5] [6] [7]The protein encoded by this gene is involved in the synthesis of the unbranched glycosaminoglycan hyaluronan, or hyaluronic acid, which is a major constituent of the extracellular matrix.
Other names in common use include galactoceramide synthase [1], uridine diphosphogalactose-2-hydroxyacylsphingosine, galactosyltransferase, UDPgalactose-2-hydroxyacylsphingosine galactosyltransferase, UDP-galactose:ceramide galactosyltransferase, and UDP-galactose:2-2-hydroxyacylsphingosine galactosyltransferase.
In enzymology, a S-methyl-5'-thioadenosine phosphorylase (EC 2.4.2.28) is an enzyme that catalyzes the chemical reaction. S-methyl-5'-thioadenosine + phosphate adenine + S-methyl-5-thio-alpha-D-ribose 1-phosphate
In enzymology, an alpha,alpha-trehalose-phosphate synthase (UDP-forming) (EC 2.4.1.15) is an enzyme that catalyzes the chemical reaction UDP-glucose + D-glucose 6-phosphate ⇌ {\displaystyle \rightleftharpoons } UDP + alpha,alpha-trehalose 6-phosphate
N,N'-diacetylchitobiose phosphorylase (EC 2.4.1.280, chbP (gene)) is an enzyme with the systematic name N,N'-diacetylchitobiose:phosphate N-acetyl-D-glucosaminyltransferase. [1] [2] [3] This enzyme was found in the genus Vibrio initially but has now been found to be taken up by Escherichia coli as well as many other bacteria.