Sandbox 210: Difference between revisions

From Proteopedia
Jump to navigationJump to search
No edit summary
No edit summary
Line 25: Line 25:
The activator protein of CDK5, p25, presents a cyclin-box fold domain, which is the structural motif found in the cyclins.
The activator protein of CDK5, p25, presents a cyclin-box fold domain, which is the structural motif found in the cyclins.
Analyses of the crystal structures of CDK5/p25 show the existence of extensive electrostatic and Van Der Waals interactions between the β sheet, and a small loop following the C helix (f-loop) of CDK5, and an helix of p25.
Analyses of the crystal structures of CDK5/p25 show the existence of extensive electrostatic and Van Der Waals interactions between the β sheet, and a small loop following the C helix (f-loop) of CDK5, and an helix of p25.
During the unbinding processes between CDK5 and p25, obvious conformational changes in the C helix and the T loop are observed. The C helix, together with the loop preceding the helix (the p-loop) apparently displaces from its original location towards the p25 side. The distances between the C-alpha carbon atoms of the tip amino acid of the p-loop (Gly43) and the starting amino acid of the C helix (Ser46) before and after pulling are 14.15 Å and 7.23 Å, respectively.<ref>DOI:10.1007/s00894-009-0629-4</ref>
During the unbinding processes between CDK5 and p25, obvious conformational changes in the C helix and the T loop are observed. The C helix, together with the loop preceding the helix (the p-loop) apparently displaces from its original location towards the p25 side. The distances between the C-alpha carbon atoms of the tip amino acid of the p-loop (Gly43) and the starting amino acid of the C helix (Ser46) before and after pulling are 14.15 Å and 7.23 Å, respectively.<ref name="premier">doi:10.1007/s00894-009-0629-4</ref>


===Sequence similarities===
===Sequence similarities===