Characterization of vanadate-based transition-state-analog complexes of phosphoglucomutase by spectral and NMR techniques

Biochemistry ◽  
1990 ◽  
Vol 29 (11) ◽  
pp. 2770-2778 ◽  
Author(s):  
William J. Ray ◽  
John W. Burgner ◽  
Carol Beth Post
Keyword(s):  
Transition State ◽  
Transition State Analog ◽  
Nmr Techniques

scholarly journals Expression, purification from inclusion bodies, and crystal characterization of a transition state analog complex of arginine kinase: A model for studying phosphagen kinases

1997 ◽  
Vol 6 (2) ◽  
pp. 444-449 ◽  
Author(s):  
Genfa Zhou ◽  
Gopalakrishnan Parthasarathy ◽  
Thayumanasamy Somasundaram ◽  
Andrea Ables ◽  
Lance Roy ◽  
...  
Keyword(s):  
Transition State ◽  
Inclusion Bodies ◽  
Arginine Kinase ◽  
Transition State Analog ◽  
Phosphagen Kinases ◽  
Crystal Characterization ◽  
Kinase A

scholarly journals Efficient screening for catalytic antibodies using a short transition-state analog and detailed characterization of selected antibodies

1999 ◽  
Vol 261 (1) ◽  
pp. 108-114 ◽  
Author(s):  
Naoko Takahashi ◽  
Hiroyuki Kakinuma ◽  
Katsumi Hamada ◽  
Kazuko Shimazaki ◽  
Kyoko Takahashi ◽  
...  
Keyword(s):  
Transition State ◽  
Catalytic Antibodies ◽  
Detailed Characterization ◽  
Transition State Analog ◽  
Efficient Screening ◽  
Short Transition

Renin inhibitors. Synthesis of transition-state analog inhibitors containing phosphorus acid derivatives at the scissile bond

1989 ◽  
Vol 32 (7) ◽  
pp. 1652-1661 ◽  
Author(s):  
Mark C. Allen ◽  
Walter Fuhrer ◽  
Brian Tuck ◽  
Roy Wade ◽  
Jeanette M. Wood
Keyword(s):  
Transition State ◽  
Phosphorus Acid ◽  
Transition State Analog ◽  
Renin Inhibitors ◽  
Scissile Bond

Nucleophilic addition to di- and poly-iron arene complex cations

1996 ◽  
Vol 74 (11) ◽  
pp. 2073-2082 ◽  
Author(s):  
Alaa S. Abd-Ei-Aziz ◽  
Debbie A. Armstrong ◽  
Shelly Bernardin ◽  
Harold M. Hutton
Keyword(s):  
Nucleophilic Addition ◽  
Iron Complexes ◽  
Iron Complex ◽  
Cyanide Anion ◽  
Meta Position ◽  
Arene Complex ◽  
Nmr Techniques ◽  
Cyano Groups ◽  
Predominant Effect

Hydride and cyanide addition to a series of di- and polycyclopentadienyliron arene complex cations with etheric bridges is described. Reaction of the di-iron complexes with sodium borohydride resulted in the formation of a number of adducts.p-Methyl- and o,o-dimethylphenoxybenzene cyclopentadienyliron complexes were used as models in this study to allow for the characterization of the analagous di-iron complexes. The use of HH COSY and CH COSY NMR techniques enabled us to identify the isomeric nature of these adducts. The hydride addition results indicated that the etheric substituent had the predominant effect over the methyl group, leading to a higher addition ratio to the meta-, followed by the ortho-, then the para-positions. It was also clear that in the di-iron system, the hydride addition to each complexed arene ring took place independently. The addition of the cyanide anion to di- and poly-iron arene systems was more selective than that of the hydride anion. Reaction of sodium cyanide with p-methyl- or o-methyl-substituted arene complexes led to the formation of one adduct, with the cyanide being added to the meta position to the etheric bridges. However, cyanide addition to the di-iron complex, with a methyl substituent attached at the meta position of each complexed arene, led to the formation of a mixture of adducts. Cyanide addition to the poly-iron system with p-substituted arenes proved to be very selective, allowing for the formation of one adduct. Oxidative demetallation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) produced the uncomplexed polyaromatic ethers with cyano groups in a very good yield. Key words: cyclopentadienyliron, arene, nucleophilic addition, hydride, cyanide.

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