Gellan tetrasaccharide unsaturated glucuronyl hydrolase

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Gellan tetrasaccharide unsaturated glucuronyl hydrolase
Identifiers
EC no. 3.2.1.179
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Gellan tetrasaccharide unsaturated glucuronyl hydrolase (EC 3.2.1.179, UGL, unsaturated glucuronyl hydrolase) is an enzyme with systematic name beta-D-4-deoxy-Delta4-GlcAp-(1->4)-beta-D-Glcp-(1->4)-alpha-L-Rhap-(1->3)-beta-D-Glcp beta-D-4-deoxy-Delta4-GlcAp hydrolase. [1] [2] [3] This enzyme catalyses the following chemical reaction

beta-D-4-deoxy-Delta4-GlcAp-(1->4)-beta-D-Glcp-(1->4)-alpha-L-Rhap-(1->3)-beta-D-Glcp + H2O 5-dehydro-4-deoxy-D-glucuronate + beta-D-Glcp-(1->4)-alpha-L-Rhap-(1->3)-beta-D-Glcp

The enzyme releases 4-deoxy-4(5)-unsaturated D-glucuronic acid from oligosaccharides produced by polysaccharide lyases.

Related Research Articles

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The enzyme chondroitin-sulfate-ABC exolyase catalyzes the following process:

The enzyme glucuronan lyase catalyzes the following process:

The enzyme hyaluronate lyase catalyzes the chemical reaction

Pectate lyase is an enzyme involved in the maceration and soft rotting of plant tissue. Pectate lyase is responsible for the eliminative cleavage of pectate, yielding oligosaccharides with 4-deoxy-α-D-mann-4-enuronosyl groups at their non-reducing ends. The protein is maximally expressed late in pollen development. It has been suggested that the pollen expression of pectate lyase genes might relate to a requirement for pectin degradation during pollen tube growth.

The enzyme guluronate-specific alginate lyase catalyzes the following process:

<span class="mw-page-title-main">Mannuronate-specific alginate lyase</span>

The enzyme mannuronate-specific alginate lyase catalyzes the degradation of alginate into various monosaccharide and polysaccharide products:

The enzyme xanthan lyase catalyzes the following process:

In enzymology, a xyloglucan-specific exo-beta-1,4-glucanase (EC 3.2.1.155) is an enzyme that catalyzes the chemical reaction

<span class="mw-page-title-main">Cyclomaltodextrin glucanotransferase</span>

In enzymology, a cyclomaltodextrin glucanotransferase is an enzyme that catalyzes the chemical reaction of cyclizing part of a 1,4-alpha-D-glucan molecule through the formation of a 1,4-alpha-D-glucosidic bond. They are bacterial enzymes belonging to the same family of the α-amylase specifically known as glycosyl-hydrolase family 13. This peculiar enzyme is capable of catalyzing more than one reaction with the most important being the synthesis of non-reducing cyclic dextrins known as cyclodextrins starting from starch, amylose, and other polysaccharides.

In molecular biology, glycoside hydrolase family 88 is a family of glycoside hydrolases.

Endo-α-N-acetylgalactosaminidase (EC 3.2.1.97, endo-α-acetylgalactosaminidase, endo-α-N-acetyl-D-galactosaminidase, mucinaminylserine mucinaminidase, D-galactosyl-3-(N-acetyl-α-D-galactosaminyl)-L-serine mucinaminohydrolase, endo-α-GalNAc-ase, D-galactosyl-N-acetyl-α-D-galactosamine D-galactosyl-N-acetyl-galactosaminohydrolase) is an enzyme with systematic name glycopeptide-D-galactosyl-N-acetyl-α-D-galactosamine D-galactosyl-N-acetyl-galactosaminohydrolase. This enzyme catalyses the following chemical reaction

<span class="mw-page-title-main">Neopullulanase</span>

Neopullulanase is an enzyme of the alpha-amylase family with systematic name pullulan 4-D-glucanohydrolase (panose-forming). This enzyme principally catalyses the following chemical reaction by cleaving pullulan's alpha-1,4-glucosidic bonds:

Rhamnogalacturonan hydrolase is an enzyme with systematic name rhamnogalacturonan alpha-D-GalA-(1->2)-alpha-L-Rha hydrolase. This enzyme catalyses the following chemical reaction

Unsaturated rhamnogalacturonyl hydrolase (EC 3.2.1.172, YteR, YesR) is an enzyme with systematic name 2-O-(4-deoxy-beta-L-threo-hex-4-enopyranuronosyl)-alpha-L-rhamnopyranose hydrolase. This enzyme catalyses the following chemical reaction

Unsaturated chondroitin disaccharide hydrolase (EC 3.2.1.180, UGL, unsaturated glucuronyl hydrolase) is an enzyme with systematic name beta-D-4-deoxy-Delta4-GlcAp-(1->3)-beta-D-GalNAc6S hydrolase. This enzyme catalyses the following chemical reaction

Rhamnogalacturonan exolyase is an enzyme with systematic name α-L-rhamnopyranosyl-(1→4)-α-D-galactopyranosyluronate exolyase. This enzyme catalyses the following chemical reaction

The enzyme Rhamnogalacturonan endolyase is an enzyme with systematic name α-L-rhamnopyranosyl-(1→4)-α-D-galactopyranosyluronate endolyase. catalyses the following process:

Gellan lyase is an enzyme with systematic name gellan β-D-glucopyranosyl-(1→4)-D-glucopyranosyluronate lyase. This enzyme catalyses the following process:

Ulvan lyase is an enzyme found within the cell-wall of the marine organism Ulvales, and some marine bacterium. A lyase is a class of enzyme that catalyzes the breakdown of chemical bonds through an elimination reaction mechanism, rather than a substitution reaction mechanism. Ulvan lyase belongs to the polysaccharide lyase family, a type of enzyme that primarily functions to cleave glycosidic linkages in polysaccharides.

References

  1. Itoh T, Akao S, Hashimoto W, Mikami B, Murata K (July 2004). "Crystal structure of unsaturated glucuronyl hydrolase, responsible for the degradation of glycosaminoglycan, from Bacillus sp. GL1 at 1.8 A resolution". The Journal of Biological Chemistry. 279 (30): 31804–12. doi: 10.1074/jbc.m403288200 . PMID   15148314.
  2. Hashimoto W, Kobayashi E, Nankai H, Sato N, Miya T, Kawai S, Murata K (August 1999). "Unsaturated glucuronyl hydrolase of Bacillus sp. GL1: novel enzyme prerequisite for metabolism of unsaturated oligosaccharides produced by polysaccharide lyases". Archives of Biochemistry and Biophysics. 368 (2): 367–74. doi:10.1006/abbi.1999.1305. PMID   10441389.
  3. Itoh T, Hashimoto W, Mikami B, Murata K (May 2006). "Substrate recognition by unsaturated glucuronyl hydrolase from Bacillus sp. GL1". Biochemical and Biophysical Research Communications. 344 (1): 253–62. doi:10.1016/j.bbrc.2006.03.141. PMID   16630576.