7nmw

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Crystal structure of 14-3-3 sigma in complex with 13mer Amot-p130 peptide and fragment 40

Structural highlights

7nmw is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.5Å
Ligands:	, , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

1433S_HUMAN Adapter protein implicated in the regulation of a large spectrum of both general and specialized signaling pathways. Binds to a large number of partners, usually by recognition of a phosphoserine or phosphothreonine motif. Binding generally results in the modulation of the activity of the binding partner. When bound to KRT17, regulates protein synthesis and epithelial cell growth by stimulating Akt/mTOR pathway (By similarity). p53-regulated inhibitor of G2/M progression.

Publication Abstract from PubMed

The modulation of protein-protein interactions (PPIs) has developed into a well-established field of drug discovery. Despite the advances achieved in the field, many PPIs are still deemed as 'undruggable' targets and the design of PPIs stabilizers remains a significant challenge. The application of fragment-based methods for the identification of drug leads and to evaluate the 'tractability' of the desired protein target has seen a remarkable development in recent years. In this study, we explore the molecular characteristics of the 14-3-3/Amot-p130 PPI and the conceptual possibility of targeting this interface using X-ray crystallography fragment-based screening. We report the first structural elucidation of the 14-3-3 binding motif of Amot-p130 and the characterization of the binding mode and affinities involved. We made use of fragments to probe the 'ligandability' of the 14-3-3/Amot-p130 composite binding pocket. Here we disclose initial hits with promising stabilizing activity and an early-stage selectivity toward the Amot-p130 motifs over other representatives 14-3-3 partners. Our findings highlight the potential of using fragments to characterize and explore proteins' surfaces and might provide a starting point toward the development of small molecules capable of acting as molecular glues.

Fragment-based exploration of the 14-3-3/Amot-p130 interface.,Centorrino F, Andlovic B, Cossar P, Brunsveld L, Ottmann C Curr Res Struct Biol. 2021 Dec 29;4:21-28. doi: 10.1016/j.crstbi.2021.12.003. , eCollection 2022. PMID:35036934^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Centorrino F, Andlovic B, Cossar P, Brunsveld L, Ottmann C. Fragment-based exploration of the 14-3-3/Amot-p130 interface. Curr Res Struct Biol. 2021 Dec 29;4:21-28. PMID:35036934 doi:10.1016/j.crstbi.2021.12.003