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1fch
From Proteopedia
| 1fch, resolution 2.20Å () | |||||||||
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| Domains: | TPR, NrfG | ||||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
CRYSTAL STRUCTURE OF THE PTS1 COMPLEXED TO THE TPR REGION OF HUMAN PEX5
Many proteins contain targeting signals within their sequences that specify their delivery to particular organelles. The peroxisomal targeting signal-1 (PTS1) is a C-terminal tripeptide that is sufficient to direct proteins into peroxisomes. The PTS1 sequence closely approximates Ser-Lys-Leu-COO-. PEX5, the receptor for PTS1, interacts with the signal via a series of tetratricopeptide repeats (TPRs) within its C-terminal half. Here we report the crystal structure of a fragment of human PEX5 that includes all seven predicted TPR motifs in complex with a pentapeptide containing a PTS1 sequence. Two clusters of three TPRs almost completely surround the peptide, while a hinge region, previously identified as TPR4, forms a distinct structure that enables the two sets of TPRs to form a single binding site. This structure reveals the molecular basis for PTS1 recognition and demonstrates a novel mode of TPR-peptide interaction.
Peroxisomal targeting signal-1 recognition by the TPR domains of human PEX5., Gatto GJ Jr, Geisbrecht BV, Gould SJ, Berg JM, Nat Struct Biol. 2000 Dec;7(12):1091-5. PMID:11101887
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1FCH is a 4 chains structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
- Gatto GJ Jr, Geisbrecht BV, Gould SJ, Berg JM. Peroxisomal targeting signal-1 recognition by the TPR domains of human PEX5. Nat Struct Biol. 2000 Dec;7(12):1091-5. PMID:11101887 doi:10.1038/81930
Page seeded by OCA on Tue Feb 17 07:40:26 2009
