ISDA

Entry Detail

PDB ID:

8DVC

Keywords:

SIGNALING PROTEIN

Title:

Receptor ShHTL5 from Striga hermonthica in complex with strigolactone agonist GR24

Biological Source:

Source Organism:

Striga hermonthica

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2022-07-28

Release Date:

2023-06-14

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.64 Å

R-Value Free:

0.24

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

C 2 2 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Hyposensitive to light 5
Mutations:S95A
Chain IDs:A, B, C, D, E
Chain Length:271
Number of Molecules:5
Biological Source:Striga hermonthica

UniProt ID:A0A0M5I297 Pfam ID:PF12697

Ligand Molecules

EDO

SO4

TZU

Primary Citation

Structural analysis of a hormone-bound Striga strigolactone receptor.

Arellano-Saab, A, Skarina, T, Xu, Z, McErlean, C.S.P, Savchenko, A, Lumba, S, Stogios, P.J, McCourt, P.Show

Nat.Plants 9 883 888 (2023)

PMID: 37264151 DOI: 10.1038/s41477-023-01423-y

Abstact

Strigolactones (SLs) regulate many aspects of plant development, but ambiguities remain about how this hormone is perceived because SL-complexed receptor structures do not exist. We find that when SL binds the Striga receptor, ShHTL5, a series of conformational changes relative to the unbound state occur, but these events are not sufficient for signalling. Ligand-complexed receptors, however, form internal tunnels that posit an explanation for how SL exits its receptor after hydrolysis.

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Primary Citation of related structures