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  Crystal structures of substrate-free and retinoic acid-bound cyanobacterial cytochrome P450 CYP120A1.

Kühnel, K., Ke, N., Cryle, M. J., Sligar, S. G., Schuler, M. A., & Schlichting, I. (2008). Crystal structures of substrate-free and retinoic acid-bound cyanobacterial cytochrome P450 CYP120A1. Biochemistry, 47(25), 6552-6559. doi:10.1021/bi800328s.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-88EB-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-C57B-C
Genre: Journal Article

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http://pubs.acs.org/doi/pdf/10.1021/bi800328s (Publisher version)
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 Creators:
Kühnel, K.1, Author              
Ke, N., Author
Cryle, M. J., Author
Sligar, S. G., Author
Schuler, M. A., Author
Schlichting, I., Author
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1Research Group of Autophagy, MPI for Biophysical Chemistry, Max Planck Society, ou_1933285              

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 Abstract: The crystal structures of substrate-free and all-trans-retinoic acid-bound CYP120A1 from Synechocystis sp. PCC 6803 were determined at 2.4 and 2.1 Å resolution, respectively, representing the first structural characterization of a cyanobacterial P450. Features of CYP120A1 not observed in other P450 structures include an aromatic ladder flanking the channel leading to the active site and a triple-glycine motif within SRS5. Using spectroscopic methods, CYP120A1 is shown to bind 13-cis-retinoic acid, 9-cis-retinoic acid, and retinal with high affinity and dissociation constants of less than 1 µM. Metabolism of retinoic acid by CYP120A1 suggests that CYP120A1 hydroxylates a variety of retinoid derivatives in vivo. On the basis of the retinoic acid-bound CYP120A1 crystal structure, we propose that either carbon 2 or the methyl groups (C16 or C17) of the β-ionone ring are modified by CYP120A1.

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Language(s): eng - English
 Dates: 2008
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1021/bi800328s
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Title: Biochemistry
Source Genre: Journal
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Pages: - Volume / Issue: 47 (25) Sequence Number: - Start / End Page: 6552 - 6559 Identifier: -