THE BIOADHESIVE OF PHRAGMATOPOMA-CALIFORNICA TUBES - A SILK-LIKE CEMENT CONTAINING L-DOPA
THE BIOADHESIVE OF PHRAGMATOPOMA-CALIFORNICA TUBES - A SILK-LIKE CEMENT CONTAINING L-DOPA
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DOI：
10.1007/bf00695330
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发表时间：
1988-01-01
影响因子：
2
通讯作者：
MORSE, DE
中科院分区：
文献类型：
--
作者：
JENSEN, RA;MORSE, DE
海洋多毛类Phramatopoma calfornica(Fewkes)(Sabellariidae)生活在一个管子里，它通过将沙子和贝壳等材料粘合在一起来建造管子。虽然没有特别寻找其他有机成分，但含量中的所有碳和氮(通过CHN燃烧元素分析确定)都可以解释为蛋白质。尽管这种粘合剂可能由不止一种蛋白质组成，但氨基酸分析显示，它与蚕丝蛋白丝胶相似，丝胶是蚕丝纤维表面的粘性外层覆盖物。短链氨基酸占总残基的60%(甘氨酸：24%，丙氨酸：7%，丝氨酸：29%)。赖氨酸是其次最丰富的残基(12%)，碱性氨基酸占总残基的19%。含羟基侧链的氨基酸占总氨基酸的35%。氨基酸DOPA(3，4-二羟基苯丙氨酸)，占总残基的2.6%，可能通过苯醌单宁和/或通过与底物形成粘附型络合物来稳定材料。因此，该水泥在结构和功能上与Mytilus spp.的水泥相似。(Waite 1987)和丝绸。
The marine polychaete Phragmatopoma californica (Fewkes) (Sabellariidae) lives within a tube that it constructs by cementing together material such as sand and shells. All of the carbon and nitrogen in the content (determined by CHN combustion elemental analysis) can be accounted for as protein, although other organic constituents were not specifically looked for. Although the cement may be comprised of more than one protein, amino acid analysis reveals a similarity to the silk protein, sericin, which is the sticky outer covering on silk fibers. The short-chain amino acids comprise 60% of the total residues (glycine: 24%, alanine: 7%, and serine: 29%). Lysine is the next most abundant residue (12%), with basic amino acids totalling 19% of the total residues. Amino acids with hydroxyl side-chains account for 35% of the total. The amino acid DOPA (3,4-dihydroxyphenylalanine), which is present as 2.6% of the total residues, probably acts to stabilize the material through quinone tanning and/or by forming adhesive-type complexes with substrata. The cement thus displays structural and functional similarities with the cement of Mytilus spp. (Waite 1987) and with silk.