2.5.1.98: Rhizobium leguminosarum exopolysaccharide glucosyl ketal-pyruvate-transferase

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For detailed information about Rhizobium leguminosarum exopolysaccharide glucosyl ketal-pyruvate-transferase, go to the full flat file.

Reaction

[beta-D-GlcA-(1->4)-2-O-Ac-beta-D-GlcA-(1->4)-beta-D-Glc-(1->4)-[3-O-(CH3CH(OH)CH2C(O))-4,6-CH3(COO-)C-beta-D-Gal-(1->4)-beta-D-Glc-(1->4)-beta-D-Glc-(1->4)-beta-D-Glc-(1->6)]-2(or 3)-O-Ac-alpha-D-Glc-(1->6)]n

[beta-D-GlcA-(1->4)-2-O-Ac-beta-D-GlcA-(1->4)-beta-D-Glc-(1->4)-[3-O-(CH3CH(OH)CH2C(O))-4,6-CH3(COO-)C-beta-D-Gal-(1->3)-4,6-CH3(COO-)C-beta-D-Glc-(1->4)-beta-D-Glc-(1->4)-beta-D-Glc-(1->6)]-2(or 3)-O-Ac-alpha-D-Glc-(1->6)]n

ECTree

2 Transferases

2.5 Transferring alkyl or aryl groups, other than methyl groups

2.5.1 Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)

2.5.1.98 Rhizobium leguminosarum exopolysaccharide glucosyl ketal-pyruvate-transferase

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General Information on EC 2.5.1.98 - Rhizobium leguminosarum exopolysaccharide glucosyl ketal-pyruvate-transferase

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malfunction

Rhizobium leguminosarum

Q9FCP2

knock-out of pssM leads to the absence of the pyruvic acid ketal group at the subterminal glucose in the repeating unit of exopolysaccharide (shown by 13C and 1H nuclear magnetic resonance analysis)

715316

physiological function

Rhizobium leguminosarum

Q9FCP2

Rhizobium leguminosarum bv. viciae strain VF39 synthesizes an acidic exopolysaccharide, which is necessary to establish nitrogen-fixing symbiosis with Pisum sativum, Vicia faba, and Vicia sativa. This exopolysaccharide is a polymer of an octasaccharide repeating unit consisting of a backbone of two glucose and two glucuronic acid residues, a side chain of three glucose and one gaThe pssM gene encodes ketal pyruvate transferase, which is responsible for pyruvylation of subterminal glucose in the EPS repeating unit

715316