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| - | [[Image:2pst.gif|left|200px]] | + | {{Seed}} |
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| | {{STRUCTURE_2pst| PDB=2pst | SCENE= }} | | {{STRUCTURE_2pst| PDB=2pst | SCENE= }} |
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| - | '''1.8A Crystal Structure of the PA2412 protein from Pseudomonas aeruginosa'''
| + | ===1.8A Crystal Structure of the PA2412 protein from Pseudomonas aeruginosa=== |
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| - | ==Overview==
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| - | Many bacteria use nonribosomal peptide synthetase (NRPS) proteins to produce peptide antibiotics and siderophores. The catalytic domains of the NRPS proteins are usually linked in large multidomain proteins. Often, additional proteins are coexpressed with NRPS proteins that modify the NRPS peptide products, ensure the availability of substrate building blocks, or play a role in the import or export of the NRPS product. Many NRPS clusters include a small protein of approximately 80 amino acids with homology to the MbtH protein of mycobactin synthesis in Mycobacteria tuberculosis; no function has been assigned to these proteins. Pseudomonas aeruginosa utilizes an NRPS cluster to synthesize the siderophore pyoverdine. The pyoverdine peptide contains a dihydroxyquinoline-based chromophore, as well as two formyl-N-hydroxyornithine residues, which are involved in iron binding. The pyoverdine cluster contains four modular NRPS enzymes and 10-15 additional proteins that are essential for pyoverdine production. Coexpressed with the pyoverdine synthetic enzymes is a 72-amino acid MbtH-like family member designated PA2412. We have determined the three-dimensional structure of the PA2412 protein and describe here the structure and the location of conserved regions. Additionally, we have further analyzed a deletion mutant of the PA2412 protein for growth and pyoverdine production. Our results demonstrate that PA2412 is necessary for the production or secretion of pyoverdine at normal levels. The PA2412 deletion strain is able to use exogenously produced pyoverdine, showing that there is no defect in the uptake or utilization of the iron-pyoverdine complex.
| + | The line below this paragraph, {{ABSTRACT_PUBMED_17502378}}, adds the Publication Abstract to the page |
| | + | (as it appears on PubMed at http://www.pubmed.gov), where 17502378 is the PubMed ID number. |
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| | + | {{ABSTRACT_PUBMED_17502378}} |
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| | ==About this Structure== | | ==About this Structure== |
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| | [[Category: Non-ribosomal peptide synthesis cluster]] | | [[Category: Non-ribosomal peptide synthesis cluster]] |
| | [[Category: Pyoverdine synthesis]] | | [[Category: Pyoverdine synthesis]] |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 13:44:59 2008'' | + | |
| | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 05:42:20 2008'' |
Revision as of 02:42, 29 July 2008
Template:STRUCTURE 2pst
1.8A Crystal Structure of the PA2412 protein from Pseudomonas aeruginosa
Template:ABSTRACT PUBMED 17502378
About this Structure
2PST is a Single protein structure of sequence from Pseudomonas aeruginosa. Full crystallographic information is available from OCA.
Reference
The 1.8 A crystal structure of PA2412, an MbtH-like protein from the pyoverdine cluster of Pseudomonas aeruginosa., Drake EJ, Cao J, Qu J, Shah MB, Straubinger RM, Gulick AM, J Biol Chem. 2007 Jul 13;282(28):20425-34. Epub 2007 May 14. PMID:17502378
Page seeded by OCA on Tue Jul 29 05:42:20 2008
