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Literature summary extracted from

  • Marechal, L.R.
    beta-1,3-Oligoglucan:orthophosphate glucosyltransferases from Euglena gracilis. I. Isolation and some properties of a beta-1,3-oligoglucan phosphorylase (1967), Biochim. Biophys. Acta, 146, 417-430.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
2.4.1.30 additional information absolute requirement for sulfhydryl groups Euglena gracilis

General Stability

EC Number General Stability Organism
2.4.1.30 without 2-mercaptoethanol: loss of 80% activity after 2 weeks and over 95% after 8 weeks in enzyme extracts, with 2-mercaptoethanol: loss of 50% activity after 8 weeks Euglena gracilis

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.4.1.30 hydroquinone strongly inhibits in absence of 2-mercaptoethanol Euglena gracilis
2.4.1.30 UMP in phosphorolysis, 30% inhibition at 3 mM Euglena gracilis

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.4.1.30 1.8
-
alpha-D-glucose 1-phosphate + laminaribiose Euglena gracilis
2.4.1.30 2
-
Laminaripentaose
-
Euglena gracilis
2.4.1.30 2
-
phosphate pH 7.2, with laminaribiose Euglena gracilis
2.4.1.30 3
-
laminaritetraose
-
Euglena gracilis
2.4.1.30 3
-
phosphate pH 7.2, with laminaritetraose Euglena gracilis
2.4.1.30 4
-
laminaribiose
-
Euglena gracilis
2.4.1.30 4.5
-
laminaritriose
-
Euglena gracilis
2.4.1.30 40
-
glucose
-
Euglena gracilis

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.4.1.30 (1,3-beta-D-glucosyl)n-1 + alpha-D-glucose 1-phosphate Euglena gracilis
-
(1,3-beta-D-glucosyl)n + phosphate
-
r

Organism

EC Number Organism UniProt Comment Textmining
2.4.1.30 Euglena gracilis
-
-
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.4.1.30 0.3
-
laminaribiose Euglena gracilis
2.4.1.30 0.5
-
glucose Euglena gracilis

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.4.1.30 (1,3-beta-D-glucosyl)n-1 + alpha-D-glucose 1-phosphate
-
Euglena gracilis (1,3-beta-D-glucosyl)n + phosphate
-
r
2.4.1.30 arbutin + alpha-D-glucose 1-phosphate
-
Euglena gracilis 1,3-beta-D-glucosylarbutin + phosphate
-
r
2.4.1.30 beta-methylglucoside + alpha-D-glucose 1-phosphate
-
Euglena gracilis 1,3-beta-D-glucosyl-beta-methylglucoside + phosphate
-
r
2.4.1.30 beta-phenylglucoside + alpha-D-glucose 1-phosphate
-
Euglena gracilis 1,3-beta-D-glucosyl-beta-phenylglucoside + phosphate
-
r
2.4.1.30 cellobiose + alpha-D-glucose 1-phosphate
-
Euglena gracilis ?
-
r
2.4.1.30 D-glucose + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaribiose + phosphate
-
r
2.4.1.30 gentiobiose + alpha-D-glucose 1-phosphate
-
Euglena gracilis 1,3-beta-D-glucosylgentiobiose + phosphate
-
r
2.4.1.30 laminaribiose + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaritriose + phosphate product analysis method r
2.4.1.30 laminaribiosyl-beta-1,4-glucose + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaritriosyl-beta-1,4-glucose + phosphate
-
r
2.4.1.30 laminaribiosyl-p-hydroquinone + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaritriosyl-p-hydroquinone + phosphate
-
r
2.4.1.30 laminaribiosyl-saligenin + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaritriosyl-saligenin + phosphate
-
r
2.4.1.30 laminaridextrins + alpha-D-glucose 1-phosphate
-
Euglena gracilis ?
-
r
2.4.1.30 laminariheptaose + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminarioctaose + phosphate
-
r
2.4.1.30 laminaripentaose + alpha-D-glucose 1-phosphate low activity Euglena gracilis laminarihexaose + phosphate
-
r
2.4.1.30 laminaritetraose + alpha-D-glucose 1-phosphate low activity Euglena gracilis laminaripentaose + phosphate
-
r
2.4.1.30 laminaritetraosyl-saligenin + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaripentaosyl-saligenin + phosphate
-
r
2.4.1.30 laminaritriose + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaritetraose + phosphate
-
r
2.4.1.30 laminaritriosyl-p-hydroquinone + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaritetraosyl-p-hydroquinone + phosphate
-
r
2.4.1.30 laminaritriosyl-saligenin + alpha-D-glucose 1-phosphate
-
Euglena gracilis laminaritetraosyl-saligenin + phosphate
-
r
2.4.1.30 additional information does not act on laminarin and paramylon Euglena gracilis ?
-
?
2.4.1.30 salicin + alpha-D-glucose 1-phosphate
-
Euglena gracilis 1,3-beta-D-glucosylsalicin + phosphate
-
r

Synonyms

EC Number Synonyms Comment Organism
2.4.1.30 More not identical with laminaribiose phosphorylase, which catalyzes the same reaction Euglena gracilis

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
2.4.1.30 30 37 assay at Euglena gracilis

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.4.1.30 7 7.5 glucose or laminaribiose as acceptor Euglena gracilis