{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T09:33:57Z","timestamp":1740130437394,"version":"3.37.3"},"reference-count":32,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2008,12,31]],"date-time":"2008-12-31T00:00:00Z","timestamp":1230681600000},"content-version":"vor","delay-in-days":5812,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"NSF","award":["DMB-8816618"],"award-info":[{"award-number":["DMB-8816618"]}]},{"DOI":"10.13039\/100007197","name":"USPHS","doi-asserted-by":"crossref","award":["GM41574"],"award-info":[{"award-number":["GM41574"]}],"id":[{"id":"10.13039\/100007197","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Protein Science"],"published-print":{"date-parts":[[1993,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A ternary electron transfer protein complex has been crystallized and a preliminary structure investigation has been carried out. The complex is composed of a quinoprotein, methylamine dehydrogenase (MADH), a blue copper protein, amicyanin, and a <jats:italic>c<\/jats:italic>\u2010type cytochrome (<jats:italic>c<\/jats:italic><jats:sub>551i<\/jats:sub>). All three proteins were isolated from <jats:italic>Paracoccus denitrificans.<\/jats:italic> The crystals of the complex are orthorhombic, space group C222<jats:sub>1<\/jats:sub> with cell dimensions <jats:italic>a<\/jats:italic> = 148.81 \u00c5, <jats:italic>b<\/jats:italic> = 68.85 \u00c5, and <jats:italic>c<\/jats:italic> = 187.18 \u00c5. Two types of isomorphous crystals were prepared: one using native amicyanin and the other copper\u2010free apo\u2010amicyanin. The diffraction data were collected at 2.75 \u00c5 resolution from the former and at 2.4 \u00c5 resolution from the latter. The location of the MADH portion was determined by molecular replacement. The copper site of the amicyanin molecule was located in an isomorphous difference Fourier while the iron site of the cytochrome was found in an anomalous difference Fourier. The MADH from <jats:italic>P. denitrificans<\/jats:italic> (PD\u2010MADH) is an H<jats:sub>2<\/jats:sub>L<jats:sub>2<\/jats:sub> hetero\u2010tetramer with the H subunit containing 373 residues and the L subunit 131 residues, the latter containing a novel redox cofactor, tryptophan tryptophylquinone (TTQ). The amicyanin of <jats:italic>P. denitrificans<\/jats:italic> contains 105 residues and the cytochrome <jats:italic>c<\/jats:italic><jats:sub>551i<\/jats:sub> contains 155 residues. The ternary complex consists of one MADH tetramer with two molecules of amicyanin and two of <jats:italic>c<\/jats:italic><jats:sub>551i<\/jats:sub>, forming a hetero\u2010octamer; the octamer is located on a crystallographic diad. The relative positions of the three redox centers \u2014 i.e., the TTQ of MADH, the copper of amicyanin, and the heme group of <jats:italic>c<\/jats:italic><jats:sub>551i<\/jats:sub> \u2014 are presented.<\/jats:p>","DOI":"10.1002\/pro.5560020203","type":"journal-article","created":{"date-parts":[[2010,7,12]],"date-time":"2010-07-12T10:10:37Z","timestamp":1278929437000},"page":"147-154","source":"Crossref","is-referenced-by-count":24,"title":["Preliminary crystal structure studies of a ternary electron transfer complex between a quinoprotein, a blue copper protein, and a <i>c<\/i>\u2010type cytochrome"],"prefix":"10.1002","volume":"2","author":[{"given":"Longyin","family":"Chen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F. Scott","family":"Mathews","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Victor L.","family":"Davidson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariella","family":"Tegoni","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Claudio","family":"Rivetti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gian Luigi","family":"Rossi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,12,31]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"1","volume-title":"Metalloproteins","author":"Adman E.T.","year":"1985"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-94-009-0957-1_1"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00178a011"},{"key":"e_1_2_1_5_1","first-page":"95","volume-title":"Perspectives on Bio\u2010inorganic Chemistry","author":"Chapman S.K.","year":"1991"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/bi00136a006"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/0022-2836(88)90134-9"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/0014-5793(91)80041-Z"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/prot.340140214"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0006-291X(05)80007-5"},{"key":"e_1_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/0005-2795(80)90050-1"},{"key":"e_1_2_1_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-2836(84)80011-X"},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1107\/S0021889887012299"},{"key":"e_1_2_1_14_1","doi-asserted-by":"crossref","first-page":"13987","DOI":"10.1016\/S0021-9258(18)68173-6","article-title":"Complex formation between methylamine dehydrogenase and amicyanin from Paracoccus denitrificans","volume":"263","author":"Gray K.A.","year":"1988","journal-title":"J. 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