This domain is centrally located in Long-type peptidyl-prolyl cis-trans isomerase from Methanocaldococcus jannaschii (FKBP26) and similar archaeal sequences. FKBP26 catalyses the cis-trans isomerisation of peptidyl prolyl bonds and exhibits chaperone ...
This domain is centrally located in Long-type peptidyl-prolyl cis-trans isomerase from Methanocaldococcus jannaschii (FKBP26) and similar archaeal sequences. FKBP26 catalyses the cis-trans isomerisation of peptidyl prolyl bonds and exhibits chaperone -like activity. The latter activity requires a 50-residue insertion (IF domain, for 'Insert-in-Flap', this entry) in the catalytic FKBP domain (Pfam:PF00254). It resembles a fractured four-stranded beta-barrel with the first and second strands connected by a helix that partially covers the fracture. It shows a highly hydrophobic surface [1,2].
This is the C-terminal domain (CTD) of Methanocaldococcus jannaschii peptidyl-prolyl cis/trans isomerase FKBP26. FKBP26 mediates protein folding. CTD has an alpha/beta-sandwich structure composed of three alpha-helices and a three-stranded, mixed-ori ...
This is the C-terminal domain (CTD) of Methanocaldococcus jannaschii peptidyl-prolyl cis/trans isomerase FKBP26. FKBP26 mediates protein folding. CTD has an alpha/beta-sandwich structure composed of three alpha-helices and a three-stranded, mixed-orientation beta-sheet. The CTD domain is responsible for dimerization of FKBP26 by through inter-subunit antiparallel pairing of the third beta-strands of the two CTDs. The CTD dimer forms a continuous, six-stranded mixed beta-sheet. A CTD-like structure is also found in the phylogenetically conserved NifU proteins (HIRIP5 in mouse and humans) [1].