scholarly journals The binding of calmodulin to myelin basic protein and histone H2B

1980 ◽  
Vol 189 (2) ◽  
pp. 227-240 ◽  
Author(s):  
R J Grand ◽  
S V Perry
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Myelin Basic Protein ◽  
Basic Protein ◽  
Binding Protein ◽  
Bovine Brain ◽  
Sequence Determination ◽  
Partial Amino Acid Sequence ◽  
Histone H2b ◽  
Calmodulin Binding

1. A calmodulin-binding protein of apparent mol.wt. 19 000 has been purified from chicken gizzard. Similar proteins have been isolated from bovine uterus, rabbit skeletal muscle and rabbit liver. 2. These proteins migrated as an equimolar complex with bovine brain calmodulin on electroporesis on polyacrylamide gels in the presence of Ca2+ and 6M-urea. The complex was dissociated in the presence of EGTA. 2. The chicken gizzard calmodulin-binding protein has been shown to be identical with chicken erythrocyte histone H2B on the basis of partial amino acid sequence determination. 4. The calmodulin-binding proteins of apparent mol.wt. 22 000 isolated previously from bovine brain [Grand & Perry (1979) Biochem. J. 183, 285-295] has been shown, on the basis of partial amino-acid-sequence determination, to be identical with myelin basic protein. 5. The activation of bovine brain phosphodiesterase by calmodulin is inhibited by excess bovine uterus calmodulin-binding protein (histone H2B). 6. The phosphorylation of myelin basic protein by phosphorylase kinase is partially inhibited, whereas the phosphorylation of uterus calmodulin-binding protein (histone H2B) is unaffected by calmodulin or troponin C. 7. The subcellular distribution of myelin basic protein and calmodulin suggests that the two proteins do not exist as a complex in vivo.

Shark Myelin Basic Protein: Amino Acid Sequence, Secondary Structure, and Self-Association

1990 ◽  
Vol 55 (3) ◽  
pp. 950-955 ◽  
Author(s):  
Trudy J. Milne ◽  
Annette R. Atkins ◽  
Juanita A. Warren ◽  
Wendy P. Auton ◽  
Ross Smith
Keyword(s):  
Amino Acid ◽  
Secondary Structure ◽  
Amino Acid Sequence ◽  
Myelin Basic Protein ◽  
Basic Protein ◽  
Protein Amino Acid ◽  
Protein Amino Acid Sequence ◽  
Self Association

scholarly journals A 36 kDa monomeric protein and its complex with a 10 kDa protein both isolated from bovine aorta are calpactin-like proteins that differ in their Ca2+-dependent calmodulin-binding and actin-severing properties

1988 ◽  
Vol 251 (3) ◽  
pp. 777-785 ◽  
Author(s):  
F Martin ◽  
J Derancourt ◽  
J P Capony ◽  
A Watrin ◽  
J C Cavadore
Keyword(s):  
Plasma Membrane ◽  
Amino Acid ◽  
Amino Acid Sequence ◽  
Protein Complex ◽  
Actin Filaments ◽  
Thin Filament ◽  
Partial Amino Acid Sequence ◽  
Calmodulin Binding

Interaction of plasma membrane with the cytoskeleton involves a large number of proteins, among them a 36 kDa protein that was found to be involved in the interaction with actin filaments. We have isolated a 36 kDa protein from bovine aorta as a monomer and in a complex with a 10 kDa protein. Partial amino acid sequence determinations show that the 36 kDa and 10 kDa proteins isolated from bovine aorta are analogous to or identical with corresponding proteins purified from bovine intestine already described by Kristensen, Saris, Hunter, Hicks, Noonan, Glenney & Tack [(1986) Biochemistry 25, 4497-4503]. We report here that the association of the 10 kDa protein with the 36 kDa protein confers specific calmodulin-binding and actin-severing properties on the complex that are not possessed by the 36 kDa monomer alone. These findings suggest that the protein complex could be involved in thin-filament-related structures or could modulate some Ca2+-regulated events mediated by calmodulin.

Partial amino acid sequence determination of Bovine Corneal Protein 54 K (BCP 54)

1990 ◽  
Vol 9 (8) ◽  
pp. 781-786 ◽  
Author(s):  
David L. Cooper ◽  
Edward W. Baptist ◽  
Jan Enghild ◽  
Howard Lee ◽  
Narayana Isola ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Sequence Determination ◽  
Partial Amino Acid Sequence

Amino Acid Sequence of Porcine Myelin Basic Protein

1985 ◽  
Vol 44 (1) ◽  
pp. 134-142 ◽  
Author(s):  
Jun-ichi Kira ◽  
Gladys E. Deibler ◽  
Henry C. Krutzsch ◽  
Russell E. Martenson
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Myelin Basic Protein ◽  
Basic Protein

Precursor of Rat Liver α2u-Globulin: Partial Amino Acid Sequence Determination of Its Signal Peptide1

1981 ◽  
Vol 90 (6) ◽  
pp. 1833-1836 ◽  
Author(s):  
Yukio IKEHARA ◽  
Kimimitsu ODA ◽  
Melvin G. ROSENFELD ◽  
Shoshana BAR-NUN ◽  
Gert KREIBICH
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Rat Liver ◽  
Sequence Determination ◽  
Partial Amino Acid Sequence

Molecular cloning and characterization of a novel type of regulatory protein (GDI) for smg p25A, a ras p21-like GTP-binding protein

1990 ◽  
Vol 10 (8) ◽  
pp. 4116-4122
Author(s):  
Y Matsui ◽  
A Kikuchi ◽  
S Araki ◽  
Y Hata ◽  
J Kondo ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Exchange Reaction ◽  
Binding Protein ◽  
Regulatory Protein ◽  
Bovine Brain ◽  
Subunit Structure ◽  
Gtp Binding Protein ◽  
Gtp Binding ◽  
Ras P21

We recently purified to near homogeneity a novel type of regulatory protein for smg p25A, a ras p21-like GTP-binding protein, from bovine brain cytosol. This regulatory protein, named smg p25A GDP dissociation inhibitor (GDI), regulates the GDP-GTP exchange reaction of smg p25A by inhibiting dissociation of GDP from and subsequent binding of GTP to it. In the present studies, we isolated and sequenced the cDNA of smg p25A GDI from a bovine brain cDNA library by using an oligonucleotide probe designed from the partial amino acid sequence of purified smg p25A GDI. The cDNA has an open reading frame that encodes a protein of 447 amino acids with a calculated Mr of 50,565. This Mr is similar to those of the purified smg p25A GDI estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and sucrose density gradient ultracentrifugation, which are about 54,000 and 65,000, respectively. The isolated cDNA is expressed in Escherichia coli, and the encoded protein exhibits GDI activity. smg p25A GDI is hydrophilic overall, except for one hydrophobic region near the N terminus. smg p25A GDI shares low amino acid sequence homology with the Saccharomyces cerevisiae CDC25-encoded protein, which has been suggested to serve as a factor that regulates the GDP-GTP exchange reaction of the yeast RAS2-encoded protein, but not with the beta gamma subunits of GTP-binding proteins having an alpha beta gamma subunit structure, such as Gs and Gi. The smg p25A GDI mRNA was present in various tissues, including not only tissues in which smg p25A was detectable but also tissues in which it was not detectable. This fact has raised the possibility that smg p25A GDI interacts with another G protein in tissues in which smg p25A is absent.

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