Profilin oligomerization and its effect on poly (L-proline) binding and phosphorylation.
Profilin is a cytoskeletal protein that interacts specifically with actin, phosphoinositides and poly (l-proline). Experimental results and in silico studies revealed that profilin exists as dimer and tetramer. Profilin oligomers possess weak affinity to poly (l-proline) due to unavailability of binding sites in dimers and tetramers. Phosphorylation studies indicate that profilin dimers are not phosphorylated while teramers are preferentially phosphorylated over monomers. In silico studies revealed that PKC phosphorylation site, S137 is buried in dimer while it is accessible in tetramer.
Korupolu
Radhika V
RV
Department of Biochemistry, Osmania University, Hyderabad 500007, India.
Achary
M S
MS
Aneesa
F
F
Sathish
K
K
Wasia
R
R
Sairam
M
M
Nagarajaram
H A
HA
Singh
Surya S
SS
D000595:Amino Acid Sequence; D000818:Animals; D001345:Autoradiography; D015153:Blotting, Western; D002417:Cattle; D002845:Chromatography; D045424:Complex Mixtures; D008958:Models, Molecular; D008969:Molecular Sequence Data; D010455:Peptides / Q000378:metabolism*; D010766:Phosphorylation; D051304:Profilins / Q000737:chemistry* / Q000276:immunology / Q000378:metabolism*; D011485:Protein Binding; D020836:Protein Structure, Quaternary; D017433:Protein Structure, Secondary; D016415:Sequence Alignment; D012997:Solvents
D045424:Complex Mixtures; D010455:Peptides; D051304:Profilins; D012997:Solvents; C011083:polyproline