Matches in SemOpenAlex for { <https://semopenalex.org/work/W1975542893> ?p ?o ?g. }
- W1975542893 abstract "Abstract The human FK506-binding protein 38 (FKBP38) regulates Bcl-2 in neuronal apoptosis. To control Bcl-2 activity, FKBP38 requires a prior interaction with the Ca 2+ -sensor calmodulin (CaM). The resulting FKBP38/CaM complex is unique within the FKBP family. Here, we present novel insights into the structural arrangement of this complex. Chemical shift perturbation analyses of the individual protein domains revealed two separate interaction sites between FKBP38 and CaM. On the one hand, residues Glu303, Tyr307 and Leu311, belonging to the predicted CaM-binding site at the C-terminal end of FKBP38, become embedded in the hydrophobic target protein-binding cleft of the C-terminal CaM lobe. On the other hand, in a second binding interaction, the N-terminal end of the catalytic FKBP38 domain shows surface contacts to the AB and CD loops of CaM as well as the adjacent helices. Furthermore, a Glu-rich region at the non-structured FKBP38 N-terminus features additional contacts to CaM helix A. In combination with previous results, we thus conclude that the FKBP38/CaM complex is constituted by (i) a Ca 2+ -dependent interaction of the CaM-binding motif at the C-terminal end of FKBP38 with the C-terminal CaM lobe and (ii) a Ca 2+ -independent interaction between the N-terminal CaM lobe and the N-terminal region of the catalytic FKBP38 domain." @default.
- W1975542893 created "2016-06-24" @default.
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- W1975542893 date "2010-10-01" @default.
- W1975542893 modified "2023-09-27" @default.
- W1975542893 title "New structural aspects of FKBP38 activation" @default.
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- W1975542893 doi "https://doi.org/10.1515/bc.2010.122" @default.
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