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The CENP-A nucleosome: where and when it happens during the inner kinetochore's assembly.
Kale S, Boopathi R, Belotti E, Lone IN, Graies M, Schröder M, Petrova M, Papin C, Bednar J, Ugrinova I, Hamiche A, Dimitrov S. Kale S, et al. Trends Biochem Sci. 2023 Oct;48(10):849-859. doi: 10.1016/j.tibs.2023.07.010. Epub 2023 Aug 16. Trends Biochem Sci. 2023. PMID: 37596196 Review.
The CENP-A nucleosome is the specific building block of centromeric chromatin, and it is recognized by CENP-C and CENP-N, two components of the constitutive centromere-associated network (CCAN), the first protein layer of the kinetochore. ...We summarize the data on the st …
The CENP-A nucleosome is the specific building block of centromeric chromatin, and it is recognized by CENP-C and CENP-N, two compone …
Nucleosome dyad determines the H1 C-terminus collapse on distinct DNA arms.
Louro JA, Boopathi R, Beinsteiner B, Mohideen Patel AK, Cheng TC, Angelov D, Hamiche A, Bendar J, Kale S, Klaholz BP, Dimitrov S. Louro JA, et al. Structure. 2023 Feb 2;31(2):201-212.e5. doi: 10.1016/j.str.2022.12.005. Epub 2023 Jan 6. Structure. 2023. PMID: 36610392 Free article.
Calcium inhibits penetration of Alzheimer's Abeta(1) -(42) monomers into the membrane.
Boopathi S, Garduño-Juárez R. Boopathi S, et al. Proteins. 2022 Dec;90(12):2124-2143. doi: 10.1002/prot.26403. Epub 2022 Aug 10. Proteins. 2022. PMID: 36321654 Free PMC article.
Therefore, in the case of the absence of calcium ions, N-terminal residues of Abeta(1-42) deeply penetrate from the surface to the center of the bilayer; in contrast to calcium ions presence, the N- and C-terminal residues are involved only in surface contacts through bind …
Therefore, in the case of the absence of calcium ions, N-terminal residues of Abeta(1-42) deeply penetrate from the surface to the center of …
(13)C NMR Investigations of Hairy-Rod-Like pi-Conjugated Mesogens.
Boopathi AA, Janani K, Lobo NP, Narasimhaswamy T. Boopathi AA, et al. J Phys Chem B. 2019 Jul 5;123(26):5651-5664. doi: 10.1021/acs.jpcb.9b04282. Epub 2019 Jun 25. J Phys Chem B. 2019. PMID: 31180672
Both mesogens exhibit enantiotropic nematic mesophase with broad mesophase range. A detailed (13)C NMR study is carried out in solution as well as in nematic mesophase to understand changes in the orientation of the aliphatic chains. ...To comprehend the orientation of the …
Both mesogens exhibit enantiotropic nematic mesophase with broad mesophase range. A detailed (13)C NMR study is carried out in soluti …
Gabapentin Inhibits Multiple Steps in the Amyloid Beta Toxicity Cascade.
González-Sanmiguel J, Burgos CF, Bascuñán D, Fernández-Pérez EJ, Riffo-Lepe N, Boopathi S, Fernández-Pérez A, Bobadilla-Azócar C, González W, Figueroa M, Vicente B, Aguayo LG. González-Sanmiguel J, et al. ACS Chem Neurosci. 2020 Oct 7;11(19):3064-3076. doi: 10.1021/acschemneuro.0c00414. Epub 2020 Sep 22. ACS Chem Neurosci. 2020. PMID: 32886489
Oligomeric beta-amyloid peptide (Abeta) is one of the main neurotoxic agents of Alzheimer's disease (AD). Oligomers associate to neuronal membranes, forming "pore-like" structures that cause intracellular calcium and neurotransmitter dyshomeostasis, leading to synaptic fai …
Oligomeric beta-amyloid peptide (Abeta) is one of the main neurotoxic agents of Alzheimer's disease (AD). Oligomers associate to neur …
Structural Metamorphoses of d-Xylose Oxetane- and Carbonyl Sulfide-Based Polymers In Situ during Ring-Opening Copolymerizations.
Tran DK, Braaksma AN, Andras AM, Boopathi SK, Darensbourg DJ, Wooley KL. Tran DK, et al. J Am Chem Soc. 2023 Aug 23;145(33):18560-18567. doi: 10.1021/jacs.3c05529. Epub 2023 Aug 14. J Am Chem Soc. 2023. PMID: 37578470 Free PMC article.
Therefore, the syntheses of poly(1,2-O-isopropylidene-alpha-d-xylofuranose monothiocarbonate)s were investigated by ring-opening copolymerizations of 3,5-anhydro-1,2-O-isopropylidene-alpha-d-xylofuranose with carbonyl sulfide (COS) facilitated by (salen)CrCl/cocatalyst sys …
Therefore, the syntheses of poly(1,2-O-isopropylidene-alpha-d-xylofuranose monothiocarbonate)s were investigated by ring-opening copo …
Increased expression of desmin and vimentin reduces bladder smooth muscle contractility via JNK2.
Javed E, Thangavel C, Frara N, Singh J, Mohanty I, Hypolite J, Birbe R, Braverman AS, Den RB, Rattan S, Zderic SA, Deshpande DA, Penn RB, Ruggieri MR Sr, Chacko S, Boopathi E. Javed E, et al. FASEB J. 2020 Feb;34(2):2126-2146. doi: 10.1096/fj.201901301R. Epub 2019 Dec 16. FASEB J. 2020. PMID: 31909533 Free PMC article.
In this study, we hypothesized that BSM dysfunction associated with overexpression of desmin or vimentin is mediated via c-Jun N-terminal kinase (JNK). We employed a model of murine BSM tissue in which increased expression of desmin or vimentin was induced by adenoviral tr …
In this study, we hypothesized that BSM dysfunction associated with overexpression of desmin or vimentin is mediated via c-Jun N-term …
Zinc binding promotes greater hydrophobicity in Alzheimer's Abeta42 peptide than copper binding: Molecular dynamics and solvation thermodynamics studies.
Boopathi S, Dinh Quoc Huy P, Gonzalez W, Theodorakis PE, Li MS. Boopathi S, et al. Proteins. 2020 Oct;88(10):1285-1302. doi: 10.1002/prot.25901. Epub 2020 Jun 13. Proteins. 2020. PMID: 32419254
Our results show that the zinc and copper coordination results in a significant decrease of the solvation free energy in the C-terminal region (Met35-Val40), which in turn leads to a higher structural disorder. In contrast, the beta-sheet formation at the same C-ter …
Our results show that the zinc and copper coordination results in a significant decrease of the solvation free energy in the C-termin …
The Stimulatory Effects of Intracellular α-Synuclein on Synaptic Transmission Are Attenuated by 2-Octahydroisoquinolin-2(1H)-ylethanamine.
Ramirez AE, Fernández-Pérez EJ, Olivos N, Burgos CF, Boopathi S, Armijo-Weingart L, Pacheco CR, González W, Aguayo LG. Ramirez AE, et al. Int J Mol Sci. 2021 Dec 9;22(24):13253. doi: 10.3390/ijms222413253. Int J Mol Sci. 2021. PMID: 34948050 Free PMC article.
alpha-Synuclein (alphaSyn) species can be detected in synaptic boutons, where they play a crucial role in the pathogenesis of Parkinson's Disease (PD). However, the effects of intracellular alphaSyn species on synaptic transmission have not been thoroughly studied. ...
alpha-Synuclein (alphaSyn) species can be detected in synaptic boutons, where they play a crucial role in the pathogenesis of Parkinson's …
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