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1h6p
From Proteopedia
| 1h6p, resolution 2.20Å () | |||||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
DIMERISTION DOMAIN FROM HUMAN TRF2
TRF1 and TRF2 are key components of vertebrate telomeres. They bind to double-stranded telomeric DNA as homodimers. Dimerization involves the TRF homology (TRFH) domain, which also mediates interactions with other telomeric proteins. The crystal structures of the dimerization domains from human TRF1 and TRF2 were determined at 2.9 and 2.2 A resolution, respectively. Despite a modest sequence identity, the two TRFH domains have the same entirely alpha-helical architecture, resembling a twisted horseshoe. The dimerization interfaces feature unique interactions that prevent heterodimerization. Mutational analysis of TRF1 corroborates the structural data and underscores the importance of the TRFH domain in dimerization, DNA binding, and telomere localization. A possible structural homology between the TRFH domain of fission yeast telomeric protein Taz1 with those of the vertebrate TRFs is suggested.
Structure of the TRFH dimerization domain of the human telomeric proteins TRF1 and TRF2., Fairall L, Chapman L, Moss H, de Lange T, Rhodes D, Mol Cell. 2001 Aug;8(2):351-61. PMID:11545737
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1h6p is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
- Fairall L, Chapman L, Moss H, de Lange T, Rhodes D. Structure of the TRFH dimerization domain of the human telomeric proteins TRF1 and TRF2. Mol Cell. 2001 Aug;8(2):351-61. PMID:11545737
- Bilaud T, Brun C, Ancelin K, Koering CE, Laroche T, Gilson E. Telomeric localization of TRF2, a novel human telobox protein. Nat Genet. 1997 Oct;17(2):236-9. PMID:9326951 doi:10.1038/ng1097-236
- Broccoli D, Smogorzewska A, Chong L, de Lange T. Human telomeres contain two distinct Myb-related proteins, TRF1 and TRF2. Nat Genet. 1997 Oct;17(2):231-5. PMID:9326950 doi:10.1038/ng1097-231
Categories: Homo sapiens | Chapman, L. | Fairall, L. | Rhodes, D. | Dimerisation | Dna-binding | Nuclear protein | Telomere | Telomere binding | Trf2 | Trfh
