您现在的位置: 首页> 研究主题> 牛血清白蛋白(BSA)

牛血清白蛋白(BSA)

牛血清白蛋白(BSA)的相关文献在2000年到2022年内共计99篇,主要集中在化学、生物化学、化学工业 等领域,其中期刊论文94篇、会议论文1篇、专利文献126910篇;相关期刊59种,包括西北师范大学学报(自然科学版)、长江大学学报(自然版)理工卷、渤海大学学报(自然科学版)等; 相关会议1种,包括中国化学会第九届分析化学年会暨全国原子光谱学术会议等;牛血清白蛋白(BSA)的相关文献由344位作者贡献,包括张朝红、王君、苏志鹏等。

牛血清白蛋白(BSA)—发文量

期刊论文>

论文:94 占比:0.07%

会议论文>

论文:1 占比:0.00%

专利文献>

论文:126910 占比:99.93%

总计:127005篇

牛血清白蛋白(BSA)—发文趋势图

牛血清白蛋白(BSA)

-研究学者

  • 张朝红
  • 王君
  • 苏志鹏
  • 郭颖
  • 何佳恒
  • 刘浩广
  • 张向东
  • 杜祖亮
  • 杨玉青
  • 沈颖颖
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

    • 何源峰; 朱龙平; 苗慧; 陈宝
    • 摘要: 甘油作为水溶液中蛋白质的稳定剂,研究其存在时蛋白质的结构变化对蛋白质相关研究和应用具有重要意义。本研究以牛血清白蛋白(BSA)为模型蛋白,采用离子淌度质谱(IM-MS)法和动态光散射法考察在近似生理条件下低浓度甘油对蛋白质结构的影响。在一定浓度范围内,甘油可引起BSA平均电荷和碰撞截面积(CCS)的增加,单个电荷状态也经历了CCS值的增加,还可导致BSA水化半径的增加,表明低浓度甘油可引起溶液中蛋白质结构松散。此外,含0.5%甘油的BSA去折叠的开始电压较高,且去折叠过渡发生在更宽的电压范围内,表明低浓度甘油可提高蛋白质的稳定性。本工作可为甘油稳定蛋白质的机制研究提供参考。
    • 王艳妮; 马红燕
    • 摘要: 实验发现,在pH值为6.60的Britton-Robinson(B-R)缓冲介质中,Cu2+对头孢地尼(CEF)猝灭牛血清白蛋白(BSA)的内源性荧光有协同作用,据此建立了以Cu2+-BSA为体系对CEF的定量测定.在选定的实验条件下,体系的荧光猝灭值ΔF与CEF浓度在6~360nmol·L-1(R2=0.9994)范围内呈良好的线性关系,检出限为3.3nmol·L-1,相对标准偏差为0.35%(n=5,c=80nmol·L-1).该方法用于片剂中CEF的测定,结果满意,加标回收率为99.40%~102.2%.模拟生理条件,研究了 Cu2+对CEF和BSA相互作用的影响,结果表明,静态猝灭和非辐射能量转移是CEF猝灭BSA荧光的两大原因,Cu2+的参与并未改变体系猝灭机理和作用力类型,但对猝灭常数、结合常数和结合位点数有不同程度影响.该研究为分析CEF在人体内的生理活性提供了理论参考.
    • 赵玲子; 菅琳晗; 杨炳君
    • 摘要: 硫化纳米零价铁(S-nZVI)是近年来兴起的一种应用于地下水原位修复的新型纳米铁基修复剂,其生物安全性日益受到社会的关注.通过紫外光谱和荧光光谱相互验证,研究羧甲基纤维素钠(CMC)稳定S-nZVI和牛血清白蛋白(BSA)的相互作用.结果表明,CMC-S-nZVI与牛血清白蛋白的作用较弱,牛血清白蛋白光谱特性的变化主要是由于其微环境的改变引起的.这将为从分子水平上研究CMC-S-nZVI的生物安全性提供理论依据.
    • 彭娟; 丁浩; 叶满萍; 胡劲; 普绍平; 丛艳伟; 王应飞
    • 摘要: 用稳态荧光光谱及时间分辨荧光技术研究水溶液中甲啶铂与牛血清白蛋白(BSA)的相互作用.加入甲啶铂后,BSA荧光发射峰从335 nm红移到337.5 nm,并伴随着荧光强度的猝灭,表明甲啶铂与BSA发生了相互作用;单指数拟合得到的荧光寿命结果证实,甲啶铂对BSA的猝灭为静态猝灭;荧光寿命的双指数拟合结果表明,BSA的内在荧光主要是由第212位和第134位的色氨酸残基贡献的,BSA中第212位色氨酸残基和苯丙氨酸残基可能是甲啶铂的靶向目标.
    • 杨美玲; 崔东亚; 王丽雪; 张杰
    • 摘要: The interaction between matrine (MAT) and human serum albumin (HSA) and bovine serum albumin (BSA) were investigated by fluorescence spectroscopy,UV absorption spectroscopy and circular dichroism spectroscopy with the simulated physiological condition. The experiment results of show UV absorption spectroscopy and fluorescence spectroscopy that matrine can react with HSA or BSA and form a kind of new compound at the ground state and prove that the flurescence quenching of HSA or BSA by matrine is dynamic quenching,and at different temperature,quenching constants are respectively HSA:4.60×103,1.71×104,3.07×104L/mol and BSA:3.17×104﹑3.91×104and 4.48×104L/mol; binding constants are respectively HSA:5.999×105﹑3.097×106,6.667×107L/mol and 1.007×105,1.163×105,1.582×105L/mol, the number of binding sites is approximately equal to 1. The calculation results of thermodynamic parameters display that the reaction is hydrophobic effect and is sponta-neous reaction between matrine and HSA or BSA.%在模拟生理pH条件下,采用荧光光谱法、紫外-可见吸收光谱法和圆二色谱法研究了苦参碱与人血清白蛋白(Human serum albumin,简称HSA)和牛血清白蛋白(Bovine serum albumin,简称BSA)的相互作用.紫外吸收光谱法和荧光光谱法的试验结果表明,苦参碱对HSA和BSA相互作用在基态时形成复合物,因此对HSA和BSA均具有一定的荧光猝灭作用,其猝灭方式为静态猝灭,在22、27和37°C时其猝灭常数分别为HSA 3.07×104、1.71×104、4.60×103L/mol和BSA 4.48×104、3.91×104和3.17×104L/mol;结合常数分别为HSA 5.999×105、3.097×106、6.667×107L/mol和1.007×105、1.163×105、1.582×105L/mol;结合位点数基本维持不变.而圆二色谱法和热力学参数的计算结果表明苦参碱与HSA及苦参碱与BSA两者之间的作用力为疏水作用且为自发反应.
    • 尚永辉; 刘静; 刘建波; 郭颖; 陈燕; 张萍
    • 摘要: 考察了天青A与牛血清白蛋白(BSA)混合体系的共振散射光谱,发现天青A的加入能引起BSA的共振散射光谱强度明显增强,通过优化实验条件建立了测定蛋白的新方法. 在pH=3.78的磷酸氢二钠-柠檬酸缓冲溶液中,固定天青A浓度为1.00×10-5mol/L,当牛血清白蛋白浓度在8.80×10-8~4.40×10-6mol/L范围内与体系的共振光散射强度值呈良好的线性关系,线性方程为IRLS=69.744c ( mol/L)+59.359,相关系数r=0.992 8,检出限为3.28×10-8mol/L,方法应用于牛尿样品中白蛋白含量的测定,回收率在97%~106%之间,表明方法具有较高的准确度,结果令人满意.%The resonance light scattering of azure A-BSA was investigated. The intensity of resonance scattering spectrum was obviously enhanced when 1.00×10-5mol/L Azure A was added. A new method of determination of protein was established by optimization of the experimental conditions of resonance scattering spectroscopy of azure A and BSA. In disodium hydrogen phosphate of pH=3.78, citrate buffer solution resonance light scattering (RLS) intensity showed a good linear relationship in the con-centration range of BSA with 8.80×10-8-4.40×10-6mol/L. The linear equation was IRLS=69.744 c (mol/L)+59.359, and the detection limit was 3.28×10-8mol/L. Applied to the determination of BSA in bovine urine samples, the recovery was at the range of 97% to 106%, and satisfactory results was obtained.
    • 郝元元; 吴琪; 李季; 葛超; 马超盈; 钱勇; 苏志; 刘红科
    • 摘要: Five OsⅡ-arene complexes(1—5)with bipyridyl derivative ligands were synthesized, where com-plexes 1—4 were obtained directly from the corresponding precursors, complex 5, however, was received through the anion-exchange experiment from complex 3,with Cl-being replaced by PF-6. Single crystal struc-ture analyses of complexes 1 and 5 revealed that both complexes adopted typical"piano-stool"conformations, where the"piano stool"consisted of the π-bond to the arene group, the Os—Cl and two Os—N bonds. The anticancer activities of the complexes towards variable cancer cells were determined by MTT assay. Complexes 1 and 3 exhibited moderate cytotoxicity towards human lung cancer cells(A549)than complexes 2 and 4. The interactions between the complexes with DNA/BSA were studied by utilization of UV-Vis, fluorescence and CD spectroscopy,and agarose gel electrophoresis. The results indicated that the synthesized complexes except complex 2 could effectively bind to DNA via intercalation. The fluorescence quenching was observed as com-plexes 1—4 were added into the BSA solution. The quenching constants(KSV)of complexes 1—4 were larger than 104L/mol,suggesting that the quenching mechanism was static quenching. CD spectra illuminated that the complexes could induce intrinsic conformational changes in DNA. The mobility changes of the formⅠband were clearly observed in the presence of complexes 1 and 3 by gel electrophoresis assays.%使用N,N′螯合配体与对甲基异丙基锇或联苯锇反应,合成了5个新型的单核联吡啶类芳基锇配合物[(η6-arene)Os(N,N′)Cl][Y].通过X射线单晶衍射分析确定了配合物1和5的结构,其均具有"琴凳型"构型.利用核磁共振氢谱、质谱和元素分析等方法,确认了配合物1~5同构.利用紫外光谱、荧光光谱、圆二色谱和琼脂糖凝胶电泳等方法研究了配合物与小牛胸腺DNA、质粒DNA(pBR322)和牛血清白蛋白(BSA)的相互作用,并利用噻唑蓝(MTT)比色法测定了配合物对体外肿瘤细胞生长的抑制能力.结果表明,配合物能与DNA及BSA发生一定程度的键合作用,配合物1和3表现出对A549肿瘤细胞一定程度的抑制能力.通过改变联吡啶配体上的取代基,可以在一定程度上调控配合物的抗癌活性.
    • 王海威; 刘浩广; 曾慧平; 胡彬彬; 杜祖亮
    • 摘要: 结合仿生矿化的方法,利用牛血清白蛋白LB膜为模板经过低温退火后在FTO(SnO2∶F)导电玻璃上制备了大面积连续致密的多孔ZnO薄膜.经SEM、XRD、荧光光谱仪和紫外可见吸收光谱仪等测量手段,分析了ZnO薄膜样品的表面形貌、结晶性能以及光致发光特性.实验证明该方法简单快捷,适于大面积生产,且制备的薄膜样品的生长具有高比表面积和在近紫外范围的宽带发光特性.%Large area,uniform and porous ZnO thin films were fabricated below a BSA monolayer annealed at low temperature on FTO substrates by using biomimetic method.The microstructure,surface topography,crystallization properties and photoluminescence properties of the obtained ZnO thin films were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD) and ultraviolet visible (UV-Vis) absorption spectroscopy and photoluminescence spectroscopy (PL).The results show that the simple and fast preparation is suitable for large area production.The results of characterization indicate that the thin films have high specific surface area and broadband luminescence properties of violet light.
    • 王海威; 刘浩广; 吴蕾; 胡彬彬; 杜祖亮
    • 摘要: 结合仿生合成的方法,采用牛血清白蛋白为模板利用 LB技术诱导制备了具有取向性生长晶型和对称花瓣状形貌的Li2CO3微晶.经SEM、XRD等表征 Li2CO3微晶的表面形貌、结晶性能,并对其形成机理进行了初步探讨.实验证明BSA LB模板对Li2CO3微晶的形貌和生长取向性有很好的调控作用.%Lithium carbonate crystallites with the orientation of the crystal type and symmetry of petal shaped morphology were fabricated below a BSA monolayer by using biomimetic method.The microstructure and sur-face topography of the obtained lithium carbonate crystallites were characterized by scanning electron microsco-py (SEM)and X-ray diffraction (XRD),and the formation mechanism was discussed.The results of character-ization indicate that BSA LB film can be used as a template to induce and regulate the lithium carbonate crystal-lites to crystallize with a special growth orientation and complex morphologies.
    • 陈天弟; 刘辉; 马阜生; 陶彩虹
    • 摘要: 采用溶剂热法制备了Fe3O4纳米粒子,再经两步法制备了核壳结构Fe3O4@PDA@BSA纳米复合材料,并利用X-射线衍射仪(XRD)、透射电镜(TEM)、振动样品磁强计(VSM)时样品形貌及磁性能进行了表征.结果表明,所制备的Fe3O4纳米粒子粒径为3~21 nm;核壳结构Fe3O4@PDA@BSA纳米复合材料的壳层厚度为10~20 nm,比饱和磁化强度为58.8 emu·g-1,具有良好的磁性能和生物安全性.该方法简单、反应条件温和、绿色环保,具有较好的适用性.
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号