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5.6.1.8: myosin ATPase

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

Word Map on EC 5.6.1.8

Reaction

ATP
+
H2O
 +
myosin bound to actin filament at position n
=
ADP
 +
phosphate
 +
myosin bound to actin filament at position n+1

Synonyms

actin activated myosin ATPase, actin-stimulated myosin ATPase, actomyosin, actomyosin 1b ATPase, actomyosin ATPase, actomyosin-ATPase, EC 3.6.1.32, EC 3.6.4.1, heavy meromyosin, heavy meromyosin ATPase, HMM, HMM ATPase, matpase, myofibril ATPase, myosin, myosin 2, myosin 2 motor domain, myosin ATPase, myosin II ATPase, myosin II S1, myosin Mg-ATPase, myosin MgATPase, myosin S1 ATPase, myosin-2, myosin-2 ATPase, myosin-ATPase, natural actomyosin, NMIIB, S1-myosin ATPase

ECTree

     5 Isomerases
         5.6 Isomerases altering macromolecular conformation
             5.6.1 Enzymes altering polypeptide conformation or assembly
                5.6.1.8 myosin ATPase

Specific Activity

Specific Activity on EC 5.6.1.8 - myosin ATPase

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SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.0003
-
substrate UTP, basal myosin ATPase, 0.6 M KCl, 2 mM MgCl2, pH 7
0.001
-
in the absence of actin
0.003
-
substrate ATP, basal myosin ATPase, 0.6 M KCl, 2 mM MgCl2, pH 7
0.004
-
substrate CTP, basal myosin ATPase, 0.6 M KCl, 2 mM MgCl2, pH 7
0.005
0.007
-
substrate GTP, basal myosin ATPase, 0.6 M KCl, 2 mM MgCl2, pH 7
0.027
-
actin and light chain kinase activated, phosphorylation of myosin is Ca2+ and Calmodulin-dependent
0.03
-
conduction system, in the absence of actin
0.05
-
myosin B, Ca2+-ATPase, 0.5 M KCl
0.06
-
myosin B, EDTA-ATPase, 0.5 M KCl
0.07
-
activation with polylysine
0.13
-
soleus muscles, resting
0.15
-
ventricular tissue, in the absence of actin
0.18
-
K+(EDTA)-ATPase, isoenzyme V1
0.28
-
Ca-ATPase activity, isoenzyme V3
0.3
-
soleus muscles, Ca2+-activated
0.34
-
80 weeks old rats, activity decreases with age, Ca2+activated ATPase
0.35
-
30 weeks old rats, Ca2+activated ATPase
0.4
-
diaphragm, increasing enzyme activity in cold stressed rats
0.517
-
rats treated with ouabain for 7 days
0.638
-
rats treated with ouabain for 30 days
0.65
-
semimembranous muscles, Ca2+-activated
0.66
-
activity value of the semimembranous muscles from rats that are cage control, Ca2+-activated
0.707
-
rats treated with ouabain for 15 days
0.78
-
activity value of the semimembranous muscles from rats that are hindlimb unloaded for 4 wk, Ca2+-activated
0.8
-
Ca-ATPase activity, myosin II
0.82
-
Ca-ATPase activity, isoenzyme V1
3
-
K+(EDTA)-ATPase activity, myosin IA
4
-
K+(EDTA)-ATPase activity, myosin IB
additional information