An Alternative Method for Pucker Determination in Carbohydrates from Residual Dipolar Couplings:  A Solution NMR Study of the Fructofuranosyl Ring of Sucrose

2002 ◽  
Vol 124 (10) ◽  
pp. 2358-2362 ◽  
Author(s):  
Darón I. Freedberg
Biochemistry ◽  
2002 ◽  
Vol 41 (43) ◽  
pp. 12899-12906 ◽  
Author(s):  
Tapas K. Mal ◽  
Nikolai R. Skrynnikov ◽  
Kyoko L. Yap ◽  
Lewis E. Kay ◽  
Mitsuhiko Ikura

2015 ◽  
Vol 137 (35) ◽  
pp. 11242-11245 ◽  
Author(s):  
Alexander Eletsky ◽  
Surya V.S.R.K. Pulavarti ◽  
Victor Beaumont ◽  
Paul Gollnick ◽  
Thomas Szyperski

2019 ◽  
Vol 26 (6) ◽  
pp. 449-457
Author(s):  
Ting Song ◽  
Keke Cao ◽  
Yu dan Fan ◽  
Zhichao Zhang ◽  
Zong W. Guo ◽  
...  

Background: The significance of multi-site phosphorylation of BCL-2 protein in the flexible loop domain remains controversial, in part due to the lack of structural biology studies of phosphorylated BCL-2. Objective: The purpose of the study is to explore the phosphorylation induced structural changes of BCL-2 protein. Methods: We constructed a phosphomietic mutant BCL-2(62-206) (t69e, s70e and s87e) (EEEBCL- 2-EK (62-206)), in which the BH4 domain and the part of loop region was truncated (residues 2-61) to enable a backbone resonance assignment. The phosphorylation-induced structural change was visualized by overlapping a well dispersed 15N-1H heteronuclear single quantum coherence (HSQC) NMR spectroscopy between EEE-BCL-2-EK (62-206) and BCL-2. Results: The EEE-BCL-2-EK (62-206) protein reproduced the biochemical and cellular activity of the native phosphorylated BCL-2 (pBCL-2), which was distinct from non-phosphorylated BCL-2 (npBCL-2) protein. Some residues in BH3 binding groove occurred chemical shift in the EEEBCL- 2-EK (62-206) spectrum, indicating that the phosphorylation in the loop region induces a structural change of active site. Conclusion: The phosphorylation of BCL-2 induced structural change in BH3 binding groove.


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