Part:BBa_K4165048
HtrA1 Switch 28
This composite part consists of T7 promoter (BBa_K3633015), lac operator (BBa_K4165062), pGS-21a RBS (BBa_K4165016), 6x His-tag (BBa_K4165020), H1A (BBa_K4165000), GSGSG Linker (BBa_K4165066), TD28REV (BBa_K4165006), GGSGGGGG Linker (BBa_K4165019), WWW (BBa_K4165007), GSGSG Linker (BBa_K4165066), WAP inhibitor (BBa_K4165008), and T7 terminator (BBa_K731721).
Usage and Biology
Switch 28 is used to mediate the activity of HTRA1. It is composed of 3 parts connected by different linkers; an HtrA1 PDZ peptide, a clamp of two targeting peptides for tau or amyloid beta, and a catalytic domain inhibitor. Activating HTRA1 requires a conformational change in the linker, eliminating the attached inhibitor from the active site. The conformational rearrangement can be mediated through the binding of affinity clamp to tau or beta-amyloid. This binding will result in a tension that detaches the inhibitor from the active site.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25INCOMPATIBLE WITH RFC[25]Illegal NgoMIV site found at 532
Illegal AgeI site found at 268 - 1000COMPATIBLE WITH RFC[1000]
Dry lab
Modeling
The switch was modeled by (Alphafold - Rosettafold - tRrosetta) and the top model was obtained from Rossetafold with a score of 4 out of 6 according to our quality assessment code.
Figure 1. The 3D structure of switch 28 modeled by RosettaFold.
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