Secondary structure of acyl carrier protein as derived from two-dimensional 1H NMR spectroscopy.

Secondary structure of acyl carrier protein as derived from two-dimensional 1H NMR spectroscopy.
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酰基载体蛋白的二级结构源自二维 1H NMR 光谱。

DOI:
10.1021/bi00367a063
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发表时间:
1986
期刊:
影响因子:
2.9
通讯作者:
Prestegard,JH
Prestegard,JH
中科院分区:
生物学3区
文献类型:
--
作者:
Holak,TA;Prestegard,JH

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材料和方法用Rockand Cronan(1980)的方法从大肠杆菌B细胞(谷物加工)中分离ACP,并用二硫苏糖醇(DTT)将其还原为游离的巯基形式。将ACP样品通过较短的Cherex柱,然后是Sephadex G-25柱(5 mm磷酸二氢钾缓冲液)并冷冻干燥。高效液相色谱和核磁共振分析表明,这些样品中含有约10%的微量ACP等结构形式。样品被认为足够纯净,可用于核磁共振分析,因为人们认为10%的杂质不太可能给出可观察到的共振。事实证明,这在很大程度上是正确的。然而,在1个缩写的酰胺-C“H区存在一些弱的交叉峰:ACP,酰基载体蛋白;DTT,二硫苏糖醇;?EA-SH,/3-巯基乙胺;2D核磁共振,二维核磁共振;COSY,二维/相关核磁共振光谱;DQF-COSY,双量子过滤COSY;RELAYEDCOSY(RELAYEDCOSY),接力相干转移光谱;NOE,nu-Clear Overhauser效应;NOESY,二维NOE光谱;ppm,百万分之;第{ij)天,残基I上的C“H质子和残基j\dgN上的酰胺质子之间的交叉弛豫连接性(Ij),残基I上的CflH质子和残基j上的酰胺质子之间的交叉驰豫连接性;d^‘(t,j),残基I上的酰胺质子和残基j上的酰胺质子之间的交叉驰豫连接性。
Materials and MethodsACP was isolated from E. coli B cells (Grain Processing) by using the method of Rockand Cronan (1980) and reduced with dithiothreitol (DTT) to the free sulfhydryl form. ACP samples were passed through a short Chelex column, followed by a Sephadex G-25 column (5 mM potassium phosphate buffer) and freeze-dried. HPLC and NMR analyses showed these samples to contain approximately 10% minor isostruc-tural forms of ACP. The samples were deemed sufficiently pure for NMR analysis since it was felt that the 10% con-taminants were unlikely to give observable resonances. This has proven to be largely correct. There are, however, a few weak cross-peaks present in the amide-C “H region of the1 Abbreviations: ACP, acyl carrier protein; DTT, dithiothreitol; ß-EA-SH,/3-mercaptoethylamine; 2D NMR, two-dimensional nuclear magnetic resonance; COSY, two-dimensional/-correlated NMR spectroscopy; DQF-COSY, double quantum filtered COSY; RELAYEDCOSY (RELAY), relayed coherence transfer spectroscopy; NOE, nu-clear Overhauser effect; NOESY, two-dimensional NOE spectroscopy; ppm, parts per million; day {ij), cross relaxation connectivity between the C “H proton on residue i and the amide proton on residue j\dgN (iJ), cross relaxation connectivity between a CflH proton on residue i and the amide proton on residue j; d^\¡(t, j), cross relaxation connectivity between the amide proton on residue i and the amide proton on residue j.
通过二维光谱法对大肠杆菌 lac 阻遏物 DNA 结合结构域 1-51 的 1H 核磁共振谱进行序列特异性共振分配。
DOI: 10.1111/j.1432-1033.1983.tb07827.x
发表时间: 1983
期刊: European journal of biochemistry
影响因子: --
作者:
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大肠杆菌酰基载体蛋白的总体构象。
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发表时间: 1968
影响因子: 4.8
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DOI: --
发表时间: 1985
期刊: European Journal of Biochemistry
影响因子: --
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DOI: --
发表时间: 1983
期刊: Biopolymers
影响因子: 2.9
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DOI: --
发表时间: 1985
期刊:
影响因子: --
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