1k9m: Difference between revisions
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|PDB= 1k9m |SIZE=350|CAPTION= <scene name='initialview01'>1k9m</scene>, resolution 3.00Å | |PDB= 1k9m |SIZE=350|CAPTION= <scene name='initialview01'>1k9m</scene>, resolution 3.00Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand= | |LIGAND= <scene name='pdbligand=A:ADENOSINE-5'-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=C:CYTIDINE-5'-MONOPHOSPHATE'>C</scene>, <scene name='pdbligand=CD:CADMIUM+ION'>CD</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=G:GUANOSINE-5'-MONOPHOSPHATE'>G</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=TYK:TYLOSIN'>TYK</scene>, <scene name='pdbligand=U:URIDINE-5'-MONOPHOSPHATE'>U</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY=[[1k73|1K73]], [[1k8a|1K8A]], [[1kc8|1KC8]], [[1kd1|1KD1]], [[1m1k|1M1K]] | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1k9m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k9m OCA], [http://www.ebi.ac.uk/pdbsum/1k9m PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1k9m RCSB]</span> | |||
}} | }} | ||
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[[Category: Nissen, P.]] | [[Category: Nissen, P.]] | ||
[[Category: Steitz, T A.]] | [[Category: Steitz, T A.]] | ||
[[Category: 50s subunit]] | [[Category: 50s subunit]] | ||
[[Category: antibiotic]] | [[Category: antibiotic]] | ||
[[Category: tylosin]] | [[Category: tylosin]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:45:20 2008'' | ||
Revision as of 21:45, 30 March 2008
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| , resolution 3.00Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , , , , , , , | ||||||
| Related: | 1K73, 1K8A, 1KC8, 1KD1, 1M1K
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Co-crystal structure of tylosin bound to the 50S ribosomal subunit of Haloarcula marismortui
OverviewOverview
Crystal structures of the Haloarcula marismortui large ribosomal subunit complexed with the 16-membered macrolide antibiotics carbomycin A, spiramycin, and tylosin and a 15-membered macrolide, azithromycin, show that they bind in the polypeptide exit tunnel adjacent to the peptidyl transferase center. Their location suggests that they inhibit protein synthesis by blocking the egress of nascent polypeptides. The saccharide branch attached to C5 of the lactone rings extends toward the peptidyl transferase center, and the isobutyrate extension of the carbomycin A disaccharide overlaps the A-site. Unexpectedly, a reversible covalent bond forms between the ethylaldehyde substituent at the C6 position of the 16-membered macrolides and the N6 of A2103 (A2062, E. coli). Mutations in 23S rRNA that result in clinical resistance render the binding site less complementary to macrolides.
About this StructureAbout this Structure
1K9M is a Protein complex structure of sequences from Haloarcula marismortui. Full crystallographic information is available from OCA.
ReferenceReference
The structures of four macrolide antibiotics bound to the large ribosomal subunit., Hansen JL, Ippolito JA, Ban N, Nissen P, Moore PB, Steitz TA, Mol Cell. 2002 Jul;10(1):117-28. PMID:12150912
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