{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T05:30:32Z","timestamp":1777527032641,"version":"3.51.4"},"reference-count":33,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2007,1,5]],"date-time":"2007-01-05T00:00:00Z","timestamp":1167955200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2007,4,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The mechanisms of formation of biogenic magnesium\u2010rich calcite remain an enigma. Here we present ultrastructural and compositional details of ossicles from the seastar <jats:italic>Pisaster giganteus<\/jats:italic> (Echinodermata, Asteroidea). Powder X\u2010ray diffraction, infrared spectroscopy and elemental analyses confirm that the ossicles are composed of magnesium\u2010rich calcite, whilst also containing about 0.01\u2009% (w\/w) of soluble organic matrix (SOM) as an intracrystalline component. Amino acid analysis and N\u2010terminal sequencing revealed that this mixture of intracrystalline macromolecules consists predominantly of glycine\u2010rich polypeptides. In vitro calcium carbonate precipitation experiments indicate that the SOM accelerates the conversion of amorphous calcium carbonate (ACC) into its final crystalline product. From this observation and from the discovery of ACC in other closely related taxa, it is suggested that substitution of magnesium into the calcite lattice through a transient precursor phase may be a universal phenomenon prevalent across the phylum echinodermata.<\/jats:p>","DOI":"10.1002\/chem.200600825","type":"journal-article","created":{"date-parts":[[2007,1,5]],"date-time":"2007-01-05T05:17:37Z","timestamp":1167974257000},"page":"3262-3268","source":"Crossref","is-referenced-by-count":63,"title":["In Vitro Study of Magnesium\u2010Calcite Biomineralization in the Skeletal Materials of the Seastar <i>Pisaster giganteus<\/i>"],"prefix":"10.1002","volume":"13","author":[{"given":"Subramanyam","family":"Gayathri","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rajamani","family":"Lakshminarayanan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James\u2005C.","family":"Weaver","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel\u2005E.","family":"Morse","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R.\u2005Manjunatha","family":"Kini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Suresh","family":"Valiyaveettil","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2007,3,23]]},"reference":[{"key":"e_1_2_6_1_2","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3757(20001002)112:19<3532::AID-ANGE3532>3.0.CO;2-3"},{"key":"e_1_2_6_1_3","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3773(20001002)39:19<3392::AID-ANIE3392>3.0.CO;2-M"},{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1039\/a604512j"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1038\/381056a0"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.19921040206"},{"key":"e_1_2_6_4_3","doi-asserted-by":"publisher","DOI":"10.1002\/anie.199201531"},{"key":"e_1_2_6_5_2","unstructured":"\u00a0"},{"key":"e_1_2_6_6_2","first-page":"567","volume-title":"Functional Morphology of the Invertebrate Skeleton","author":"Savassi E.","year":"1999"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/smll.200500246"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1029\/SC005p0117"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1039\/b402558j"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1038\/35090573"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-4095(200001)12:1<38::AID-ADMA38>3.0.CO;2-I"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1039\/CC9960001037"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1039\/a707893e"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0248(03)01153-9"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1006\/jcis.1998.6067"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1127\/0935-1221\/2004\/0016-0261"},{"key":"e_1_2_6_17_2","first-page":"56","volume":"134","author":"Wilt F. H.","year":"2004","journal-title":"J. Struct. Biol."},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.213.4508.646"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.1102289"},{"key":"e_1_2_6_20_2","first-page":"453","volume":"46","author":"Goldsmith J. R.","year":"1961","journal-title":"American Mineralogist"},{"key":"e_1_2_6_21_2","first-page":"84","volume":"43","author":"Goldsmith J. R.","year":"1958","journal-title":"American Minerologist"},{"key":"e_1_2_6_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-2738(97)00235-X"},{"key":"e_1_2_6_23_2","doi-asserted-by":"publisher","DOI":"10.1074\/jbc.M204375200"},{"key":"e_1_2_6_24_2","doi-asserted-by":"publisher","DOI":"10.1179\/095066003225005836"},{"key":"e_1_2_6_25_2","doi-asserted-by":"publisher","DOI":"10.1002\/adma.200300381"},{"key":"e_1_2_6_26_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1997.0066"},{"key":"e_1_2_6_27_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.19970031113"},{"key":"e_1_2_6_28_2","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.200304285"},{"key":"e_1_2_6_29_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.290.5494.1134"},{"key":"e_1_2_6_30_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200305313"},{"key":"e_1_2_6_31_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja016990l"}],"container-title":["Chemistry \u2013 A European Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fchem.200600825","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/chem.200600825","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T20:42:19Z","timestamp":1760301739000},"score":1,"resource":{"primary":{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/10.1002\/chem.200600825"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,3,23]]},"references-count":33,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2007,4,5]]}},"alternative-id":["10.1002\/chem.200600825"],"URL":"https:\/\/doi.org\/10.1002\/chem.200600825","archive":["Portico"],"relation":{},"ISSN":["0947-6539","1521-3765"],"issn-type":[{"value":"0947-6539","type":"print"},{"value":"1521-3765","type":"electronic"}],"subject":[],"published":{"date-parts":[[2007,3,23]]}}}