Quantitative Analysis of Amelogenin Solubility

Quantitative Analysis of Amelogenin Solubility
复制标题

牙釉蛋白溶解度的定量分析

DOI:
--
复制
发表时间:
1998
期刊:
Journal of dentistry research
影响因子:
--
通讯作者:
A. Fincham
A. Fincham
中科院分区:
--
文献类型:
--
作者:
J. Tan;W. Leung;J. Moradian;M. Zeichner‐David;A. Fincham

文献摘要

参考文献

被引文献

相似文献

成釉原蛋白是一组细胞外釉质基质蛋白,被认为参与釉质晶体形成的大小和习惯的调节。本研究的目的是比较几种淀粉原蛋白在不同pH值(从4.0到9.0)和恒定离子强度(IS)下的溶解度特性,并研究缓冲液组成、IS和二价金属离子(包括Ca2+、Mg2+和Zn2+)对淀粉原蛋白溶解度的影响。重组小鼠淀粉原蛋白(“rM179”)的溶解度在等电点附近最低,在等电点以下和以上迅速增加,与缓冲液成分无关。在本地猪(“25K”)的淀粉原蛋白中也观察到类似的趋势。猪“23K”淀粉原蛋白在pH 4.0 ~ 9.0范围内均有少量可溶性,而类似的重组蛋白“rM166”在酸性溶液中更容易溶解。合成的淀粉原蛋白多肽“TRAP”极难溶,而合成的LRAP易溶。当溶液pH从7.0降低到6.0时,猪“20K”淀粉原的溶解度显著增加。IS的增加降低了rM179的溶解度。Zn2+降低了rM179的溶解度,而Ca2+和Mg2+对rM179的溶解度没有显著影响。我们得出结论,淀粉原蛋白的溶解度取决于初级结构、溶液pH和IS,生理条件下淀粉原蛋白的低溶解度可能是由于它们在体内倾向于形成季元(聚集体)结构。
Amelogenins are a group of extracellular enamel matrix proteins which are believed to be involved in the regulation of the size and habits of forming enamel crystals. The aim of this study was to compare the solubility properties of several amelogenins at various pH (from 4.0 to 9.0) at constant ionic strength (IS), and to examine the influence of buffer composition, IS, and divalent metal ions (including Ca2+, Mg2+, and Zn2+) on amelogenin solubility. The solubility of the recombinant murine amelogenin ("rM179") was minimum near its isoelectric point and increased rapidly below and above, regardless of buffer composition. A similar trend was observed for the native porcine ("25K") amelogenin. Porcine "23K" amelogenin was only sparingly soluble from pH of 4.0 to 9.0, in contrast to the analogous recombinant "rM166", which was more soluble in acidic solutions. The synthetic amelogenin polypeptide "TRAP" was extremely insoluble, while synthetic LRAP was readily soluble. Porcine "20K" amelogenin solubility increased strikingly as the solution pH was lowered from 7.0 to 6.0. Increasing IS decreased the solubility of rM179. While Zn2+ reduced rM179 solubility, Ca2+ and Mg2+ showed no significant effects. We conclude that the solubility of amelogenin was dependent on the primary structure, solution pH, and IS, and the low solubility of amelogenins under physiological conditions may result from their tendency to form quaternary (aggregate) structures in vivo.
DOI: 10.1006/jsbi.1995.1029
发表时间: 1995-07-01
影响因子: 3
作者:
FINCHAM, AG;MORADIANOLDAK, J;SLAVKIN, HC
通讯作者: SLAVKIN, HC
DOI: 10.1006/bbrc.1993.2468
发表时间: 1993-11-30
影响因子: 3.1
作者:
FINCHAM, AG;MORADIANOLDAK, J
通讯作者: MORADIANOLDAK, J
猪牙釉蛋白的分子构象及其在蛋白质-矿物质相互作用中的意义:1H-NMR photo-CIDNP 研究。
DOI: --
发表时间: 1990
期刊: Journal de biologie buccale
影响因子: --
作者:
Aoba,T;Kawano,K;Moreno,EC
通讯作者: Moreno,EC
DOI: 10.1016/0003-9969(94)90090-6
发表时间: 1994-08-01
影响因子: 3
作者:
MORADIANOLDAK, J;SIMMER, JP;FINCHAM, AG
通讯作者: FINCHAM, AG
DOI: 10.3109/03008209609029196
发表时间: 1996
影响因子: 2.9
作者:
Janet Moradian-oldak;P. Sarte;A. Fincham
通讯作者: Janet Moradian-oldak;P. Sarte;A. Fincham