| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T1 |
0-97 |
Sentence |
denotes |
Purification and characterization of a myosin I heavy chain kinase from Acanthamoeba castellanii. |
| T2 |
98-461 |
Sentence |
denotes |
In previous work from this laboratory, a partially purified protein kinase from the soil amoeba Acanthamoeba castellanii was shown to phosphorylate the heavy chain of the two single-headed Acanthamoeba myosin isoenzymes, myosin IA and IB, resulting in a 10- to 20-fold increase in their actin-activated Mg2+-ATPase activities (Maruta, H., and Korn, E.D. (1977) J. |
| T3 |
462-467 |
Sentence |
denotes |
Biol. |
| T4 |
468-473 |
Sentence |
denotes |
Chem. |
| T5 |
474-490 |
Sentence |
denotes |
252, 8329-8332). |
| T6 |
491-706 |
Sentence |
denotes |
A myosin I heavy chain kinase has now been purified to near homogeneity from Acanthamoeba by chromatography on DE-52 cellulose, phosphocellulose, and Procion red dye, followed by chromatography on histone-Sepharose. |
| T7 |
707-807 |
Sentence |
denotes |
Myosin I heavy chain kinase contains a single polypeptide of 107,000 Da by electrophoretic analysis. |
| T8 |
808-987 |
Sentence |
denotes |
Molecular sieve chromatography yields a Stokes radius of 4.1 nm, consistent with a molecular weight of 107,000 for a native protein with a frictional ratio of approximately 1.3:1. |
| T9 |
988-1105 |
Sentence |
denotes |
The kinase catalyzes the incorporation of 0.9 to 1.0 mol of phosphate into the heavy chain of both myosins IA and IB. |
| T10 |
1106-1184 |
Sentence |
denotes |
Phosphoserine has been shown to be the phosphorylated amino acid in myosin IB. |
| T11 |
1185-1383 |
Sentence |
denotes |
The kinase has highest specific activity toward myosin IA and IB, about 3-4 mumol of phosphate incorporated/min/mg (30 degrees C) at concentrations of myosin I that are well below saturating levels. |
| T12 |
1384-1644 |
Sentence |
denotes |
The kinase also phosphorylates histone 2A, isolated smooth muscle light chains, and, to a very small extent, casein, but has no activity toward phosvitin or myosin II, a third Acanthamoeba myosin isoenzyme with a very different structure from myosin IA and IB. |
| T13 |
1645-1755 |
Sentence |
denotes |
Myosin I heavy chain kinase requires Mg2+ but is not dependent on Ca2+, Ca2+/calmodulin, or cAMP for activity. |
| T14 |
1756-1809 |
Sentence |
denotes |
The kinase undergoes an apparent autophosphorylation. |
| T1 |
0-97 |
Sentence |
denotes |
Purification and characterization of a myosin I heavy chain kinase from Acanthamoeba castellanii. |
| T2 |
98-461 |
Sentence |
denotes |
In previous work from this laboratory, a partially purified protein kinase from the soil amoeba Acanthamoeba castellanii was shown to phosphorylate the heavy chain of the two single-headed Acanthamoeba myosin isoenzymes, myosin IA and IB, resulting in a 10- to 20-fold increase in their actin-activated Mg2+-ATPase activities (Maruta, H., and Korn, E.D. (1977) J. |
| T3 |
462-467 |
Sentence |
denotes |
Biol. |
| T4 |
468-473 |
Sentence |
denotes |
Chem. |
| T5 |
474-490 |
Sentence |
denotes |
252, 8329-8332). |
| T6 |
491-706 |
Sentence |
denotes |
A myosin I heavy chain kinase has now been purified to near homogeneity from Acanthamoeba by chromatography on DE-52 cellulose, phosphocellulose, and Procion red dye, followed by chromatography on histone-Sepharose. |
| T7 |
707-807 |
Sentence |
denotes |
Myosin I heavy chain kinase contains a single polypeptide of 107,000 Da by electrophoretic analysis. |
| T8 |
808-987 |
Sentence |
denotes |
Molecular sieve chromatography yields a Stokes radius of 4.1 nm, consistent with a molecular weight of 107,000 for a native protein with a frictional ratio of approximately 1.3:1. |
| T9 |
988-1105 |
Sentence |
denotes |
The kinase catalyzes the incorporation of 0.9 to 1.0 mol of phosphate into the heavy chain of both myosins IA and IB. |
| T10 |
1106-1184 |
Sentence |
denotes |
Phosphoserine has been shown to be the phosphorylated amino acid in myosin IB. |
| T11 |
1185-1383 |
Sentence |
denotes |
The kinase has highest specific activity toward myosin IA and IB, about 3-4 mumol of phosphate incorporated/min/mg (30 degrees C) at concentrations of myosin I that are well below saturating levels. |
| T12 |
1384-1644 |
Sentence |
denotes |
The kinase also phosphorylates histone 2A, isolated smooth muscle light chains, and, to a very small extent, casein, but has no activity toward phosvitin or myosin II, a third Acanthamoeba myosin isoenzyme with a very different structure from myosin IA and IB. |
| T13 |
1645-1755 |
Sentence |
denotes |
Myosin I heavy chain kinase requires Mg2+ but is not dependent on Ca2+, Ca2+/calmodulin, or cAMP for activity. |
| T14 |
1756-1809 |
Sentence |
denotes |
The kinase undergoes an apparent autophosphorylation. |