8IBP image
Entry Detail
PDB ID:
8IBP
Keywords:
Title:
Crystal structure of Mycobacterium tuberculosis R21K ClpC1 N-terminal domain in complex with Lassomycin
Biological Source:
PDB Version:
Deposition Date:
2023-02-10
Release Date:
2023-09-20
Method Details:
Experimental Method:
Resolution:
1.45 Å
R-Value Free:
0.20
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Negative regulator of genetic competence ClpC/mecB
Mutations:R21K
Chain IDs:A
Chain Length:143
Number of Molecules:1
Biological Source:Mycobacterium tuberculosis
Polymer Type:polypeptide(L)
Description:Lassomycin
Chain IDs:B (auth: C)
Chain Length:16
Number of Molecules:1
Biological Source:Lentzea kentuckyensis
Ligand Molecules
Primary Citation
Crystal structure of the N-terminal domain of MtClpC1 in complex with the anti-mycobacterial natural peptide Lassomycin.
Int.J.Biol.Macromol. 253 126771 126771 (2023)
PMID: 37683752 DOI: 10.1016/j.ijbiomac.2023.126771

Abstact

Antibiotics form our frontline therapy against disease-causing bacteria. Unfortunately, antibiotic resistance is becoming more common, threatening a future where these medications can no longer cure infections. Furthermore, the emergence of multidrug-resistant (MDR), totally drug-resistant (TDR), and extensively drug-resistant (XDR) tuberculosis has increased the urgency of discovering new therapeutic leads with unique modes of action. Some natural peptides derived from actinomycetes, such as Cyclomarin A, Lassomycin, Rufomycin I, and Ecumicin, have potent and specific bactericidal activity against Mycobacterium tuberculosis, with the specificity owing to the fact that these peptides target the ClpC1 ATPase, an essential enzyme in mycobacteria, and inhibit/activate the proteolytic activity of the ClpC1/P1/P2 complex that participates in protein homeostasis. Here, we report the high-resolution crystal structure of the N-terminal domain of ClpC1 (ClpC1 NTD) in complex with Lassomycin, showing the specific binding mode of Lassomycin. In addition, the work also compares the Lassomycin complex structure with the previously known structures of ClpC1 NTD in complex with other natural peptides such as Cyclomarin A, Rufomycin I, and Ecumicin.

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Primary Citation of related structures