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2.4.1.1: glycogen phosphorylase

This is an abbreviated version!
For detailed information about glycogen phosphorylase, go to the full flat file.

Word Map on EC 2.4.1.1

Reaction

[(1->4)-alpha-D-glucosyl]n
+
phosphate
=
[(1->4)-alpha-D-glucosyl]n-1
 +
alpha-D-glucose 1-phosphate

Synonyms

1,4-alpha-glucan phosphorylase, alpha-1,4 glucan phosphorylase, alpha-1,4-glycan phosphorylase, alpha-glucan phosphorylase, alpha-glucan phosphorylase H, alpha-glucan/maltodextrin phosphorylase, alphaGP, amylopectin phosphorylase, amylophosphorylase, CcStP, cyosolic phosphorylase, GlgP, glucan phosphorylase, glucosan phosphorylase, glycogen phosphorylase, glycogen phosphorylase a, glycogen phosphorylase b, glycogen phosphorylase-a, GP, GP b, GPA, GPase, GPase a, GPb, GPBB, GPH, granulose phosphorylase, MalP, maltodextrin phosphorylase, More, muscle glycogen phosphorylase, muscle phosphorylase, muscle phosphorylase a and b, myophosphorylase, PF1535, Phb, PHO, Pho 2, Pho1, phosphorylase a, phosphorylase b, phosphorylase, alpha-glucan, plastidial phosphorylase, polyphosphorylase, potato phosphorylase, RMGPa, rmGPb, SP, starch phosphorylase, starch phosphorylase H, stGP, StP, tGPGG, type L alpha-glucan phosphorylase

ECTree

     2 Transferases
         2.4 Glycosyltransferases
             2.4.1 Hexosyltransferases
                2.4.1.1 glycogen phosphorylase

Specific Activity

Specific Activity on EC 2.4.1.1 - glycogen phosphorylase

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SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.0044
-
pH 7.0, 37°C, activity in undialyzed cell extracts
0.007
-
-
0.16
-
chloroplastic enzyme, phosphorolysis
1.61
-
fast isozyme
1.8
-
purified enzyme
10.08
-
phosphorylase ab
11
-
isozyme P-2
12.12
-
phosphorylase a
13
-
liver phosphorylase b, in the presence of 700 mM Na2SO4
17.7
-
maltoheptaose
2.08
-
purified recombinant detagged enzyme, pH 6.8, 50°C
2.22
-
purified recombinant His-tagged enzyme, pH 6.8, 50°C
2.67
-
slow isozyme
21
-
phosphorylase I
27
30°C, pH 7.0, mutant R141A
30
-
kidney dephospho-phosphorylase
300
-
isozyme DC2
35 - 49
-
-
4.7
-
non-phosphorylated enzyme
400
-
isozyme DC1
43.5
-
cytoplasmic enzyme, synthesis
46
-
heart isoenzymes I and II
49
-
-
5
-
phosphorylase II
50
-
liver phosphorylase a
51.6
-
skeletal muscle
52
80°C, pH 6.5, substrate maltoheptaose
54
-
heart phosphorylase IIIa
55
purified muscle enzyme, pH and temperature not specified in the publication
57.2
purified cytosolic isozyme
6.11
-
phosphorylase b
60
-
phosphorylase a, in the absence of AMP
64
-
heart phosphorylase Ia
659
-
phosphorylase I
67.5
-
stromal phosphorylase
7.8
purified recombinant enzyme
75
-
phosphorylase a, in the presence of 1 mM AMP
80
-
heart phosphorylase IIIa, in the presence of 1 mM AMP
82
-
heart phosphorylase Ia, in the presence of 1 mM AMP
85 - 90
-
phosphorylated enzyme
88
-
heart phosphorylase IIIb, in the presence of 1 mM AMP
additional information