1f2d

<table><tr><td colspan='2'>[[1f2d]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F2D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1F2D FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/1-aminocyclopropane-1-carboxylate_deaminase 1-aminocyclopropane-1-carboxylate deaminase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.99.7 3.5.99.7] </span></td></tr>

[[https://www.uniprot.org/uniprot/1A1D_CYBSA 1A1D_CYBSA]] Catalyzes a cyclopropane ring-opening reaction, the irreversible conversion of 1-aminocyclopropane-1-carboxylate (ACC) to ammonia and alpha-ketobutyrate.

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== Publication Abstract from PubMed ==

The pyridoxal 5'-phosphate (PLP)-dependent enzyme 1-aminocyclopropane-1-carboxylate deaminase (ACCD) catalyzes a reaction that involves a ring opening of cyclopropanoid amino acid, yielding alpha-ketobutyrate and ammonia. Unlike other PLP-dependent enzymes, this enzyme has no alpha-hydrogen atom in the substrate. Thus, a unique mechanism for the bond cleavage is expected. The crystal structure of ACCD from Hansenula saturnus has been determined at 2.0 A resolution by the multiple wavelength anomalous diffraction method using mercury atoms as anomalous scatterers. The model was built on the electron density map, which was obtained by the density averaging of multiple crystal forms. The final model was refined to an R-factor of 22.5% and an R(free)-factor of 26.8%. The ACCD folds into two domains, each of which has an open twisted alpha/beta structure similar to the beta-subunit of tryptophan synthase. However, in ACCD, unlike in other members of the beta family of PLP-dependent enzymes, PLP is buried deep in the molecule. The structure provides the first view of the catalytic center of the cyclopropane ring opening.

Crystal structure of 1-aminocyclopropane-1-carboxylate deaminase from Hansenula saturnus.,Yao M, Ose T, Sugimoto H, Horiuchi A, Nakagawa A, Wakatsuki S, Yokoi D, Murakami T, Honma M, Tanaka I J Biol Chem. 2000 Nov 3;275(44):34557-65. PMID:10938279<ref>PMID:10938279</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1f2d" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: 1-aminocyclopropane-1-carboxylate deaminase]]

[[Category: Honma, M]]

[[Category: Horiuchi, A]]

[[Category: Murakami, T]]

[[Category: Nakagawa, A]]

[[Category: Ose, T]]

[[Category: Sugimoto, H]]

[[Category: Tanaka, I]]

[[Category: Wakatsuki, S]]

[[Category: Yao, M]]

[[Category: Yokoi, D]]

[[Category: Open twisted alpha/beta]]