Silicification and biosilicification - Part 6. Poly- L-histidine mediated synthesis of silica at neutral pH

被引:47
作者
Patwardhan, SV [1 ]
Clarson, SJ [1 ]
机构
[1] Univ Cincinnati, Dept Mat Sci & Engn, Cincinnati, OH 45221 USA
关键词
biomineralization; biosilica; silica; histidine; poly-L-histidine; sol-gel;
D O I
10.1023/A:1022952931063
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Biosilicification results in the formation of ornate silica structures, which are seen in diatoms, sponges, grasses and other biological systems. Proteins have been isolated from diatoms, sponges and grasses that are proposed to be responsible for biosilicification and have been sequenced and/or some of the key amino acids identified. Studies of the amino acids primary sequence in these proteins suggest that lysine, histidine, arginine, cysteine, proline and serine probably play a role in biosilicification. Homopolymers of lysine, arginine and proline have been shown to form silica structures in vitro at (or close to) neutral pH. Here we report, for the first time, the ability of poly-L-histidine (PLHis) to form silica structures from a silica precursor at neutral pH. It was observed by scanning electron microscopy that PLHis facilitates the formation of silica spheres in the size range 150-200 nm and interconnected structures make up relatively smaller particles.
引用
收藏
页码:49 / 53
页数:5
相关论文
共 20 条
[1]   Ultrafast holographic nanopatterning of biocatalytically formed silica [J].
Brott, LL ;
Naik, RR ;
Pikas, DJ ;
Kirkpatrick, SM ;
Tomlin, DW ;
Whitlock, PW ;
Clarson, SJ ;
Stone, MO .
NATURE, 2001, 413 (6853) :291-293
[2]   Biomimetic synthesis of ordered silica structures mediated by block copolypeptides [J].
Cha, JN ;
Stucky, GD ;
Morse, DE ;
Deming, TJ .
NATURE, 2000, 403 (6767) :289-292
[3]   Silicatein filaments and subunits from a marine sponge direct the polymerization of silica and silicones in vitro [J].
Cha, JN ;
Shimizu, K ;
Zhou, Y ;
Christiansen, SC ;
Chmelka, BF ;
Stucky, GD ;
Morse, DE .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1999, 96 (02) :361-365
[4]  
CLARSON SJ, 2002, POLYM MAT SCI ENG, P81
[5]   Biomimetic self-activated formation of multi-scale porous silica in the presence of arginine-based surfactants [J].
Coradin, T ;
Roux, C ;
Livage, J .
JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (05) :1242-1244
[6]   Interactions of amino-containing peptides with sodium silicate and colloidal silica: A biomimetic approach of silicification [J].
Coradin, T ;
Durupthy, O ;
Livage, J .
LANGMUIR, 2002, 18 (06) :2331-2336
[7]   Effect of some amino acids and peptides on silicic acid polymerization [J].
Coradin, T ;
Livage, J .
COLLOIDS AND SURFACES B-BIOINTERFACES, 2001, 21 (04) :329-336
[8]   Evidence for intramineral macromolecules containing protein from plant silicas [J].
Harrison, CC .
PHYTOCHEMISTRY, 1996, 41 (01) :37-42
[9]   Polycationic peptides from diatom biosilica that direct silica nanosphere formation [J].
Kröger, N ;
Deutzmann, R ;
Sumper, M .
SCIENCE, 1999, 286 (5442) :1129-1132
[10]   Silica-precipitating peptides isolated from a combinatorial phage display peptide library [J].
Naik, RR ;
Brott, LL ;
Clarson, SJ ;
Stone, MO .
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2002, 2 (01) :95-100