6J67

Crystal structure of the compound 34 in a complex with TRF2

Summary for 6J67

• Entry DOI: 10.2210/pdb6j67/pdb
• Related PRD ID: PRD_002316
• Descriptor: Telomeric repeat-binding factor 2, 3FB-PHE-B8R-LEU-5XU-PRO (3 entities in total)
• Functional Keywords: telomere proteins, shelterin complex, trf2, apollo, inhibitor, dna binding protein
• Biological source: Homo sapiens (Human); More
• Total number of polymer chains: 2
• Total formula weight: 24587.74

Authors

Chen, Y.,Yang, Y.,Lei, M. (deposition date: 2019-01-14, release date: 2019-02-13, Last modification date: 2023-11-22)

Primary citation

Chen, X.,Liu, L.,Chen, Y.,Yang, Y.,Yang, C.Y.,Guo, T.,Lei, M.,Sun, H.,Wang, S.
Cyclic Peptidic Mimetics of Apollo Peptides Targeting Telomeric Repeat Binding Factor 2 (TRF2) and Apollo Interaction.
ACS Med Chem Lett, 9:507-511, 2018

PubMed Abstract: Telomeric repeat binding factor 2 (TRF2) is a telomere-associated protein that plays an important role in the formation of the 3' single strand DNA overhang and the "T loop", two structures critical for the stability of the telomeres. Apollo is a 5'-exonuclease recruited by TRF2 to the telomere and contributes to the formation of the 3' single strand DNA overhang. Knocking down of Apollo can induce DNA damage response similar to that caused by the knocking down of TRF2. In this Letter, we report the design and synthesis of a class of cyclic peptidic mimetics of the TRFH binding motif of Apollo (Apollo). We found conformational control of the C terminal residues of Apollo can effectively improve the binding affinity. We have obtained a crystal structure of a cyclic peptidic Apollo peptide mimetic () complexed with TRF2, which provides valuable guidance to the future design of TRF2 inhibitors.

PubMed: 29795768
DOI: 10.1021/acsmedchemlett.8b00152

Experimental method

X-RAY DIFFRACTION (2.05 Å)