Adenosine Triphosphatases

Publication Title: 
Nature Cell Biology

Protein ubiquitylation is a key post-translational control mechanism contributing to different physiological processes, such as signal transduction and ageing. The size and linkage of a ubiquitin chain, which determines whether a substrate is efficiently targeted for proteasomal degradation, is determined by the interplay between ubiquitylation and deubiquitylation. A conserved factor that orchestrates distinct substrate-processing co-regulators in diverse species is the ubiquitin-selective chaperone CDC-48 (also known as p97).

Kuhlbrodt, Kirsten
Janiesch, Philipp Christoph
Kevei, …va
Segref, Alexandra
Barikbin, Roja
Hoppe, Thorsten
Publication Title: 
Nature Communications

It is hypothesized that a common underlying mechanism links multiple neurodegenerative disorders. Here we show that transitional endoplasmic reticulum ATPase (TERA)/valosin-containing protein (VCP)/p97 directly binds to multiple polyglutamine disease proteins (huntingtin, ataxin-1, ataxin-7 and androgen receptor) via polyglutamine sequence. Although normal and mutant polyglutamine proteins interact with TERA/VCP/p97, only mutant proteins affect dynamism of TERA/VCP/p97.

Fujita, Kyota
Nakamura, Yoko
Oka, Tsutomu
Ito, Hikaru
Tamura, Takuya
Tagawa, Kazuhiko
Sasabe, Toshikazu
Katsuta, Asuka
Motoki, Kazumi
Shiwaku, Hiroki
Sone, Masaki
Yoshida, Chisato
Katsuno, Masahisa
Eishi, Yoshinobu
Murata, Miho
Taylor, J. Paul
Wanker, Erich E.
Kono, Kazuteru
Tashiro, Satoshi
Sobue, Gen
La Spada, Albert R.
Okazawa, Hitoshi
Publication Title: 
Archives of Toxicology

This study is aimed at exploring the possible mechanism of hypnosis-enhancing effect of HgS or cinnabar (a traditional Chinese medicine containing more than 95% HgS) in mice treated with pentobarbital. We also examined whether the effect of HgS is different from that of the well-known methyl mercury (MeHg).

Chuu, Jiunn-Jye
Huang, Zih-Ning
Yu, Hsun-Hsin
Chang, Liang-Hao
Lin-Shiau, Shoei-Yn
Publication Title: 
Zhongguo Yao Li Xue Bao = Acta Pharmacologica Sinica

AIM: To study the effect of artemether (Art) on phosphorylase (PP), lactate dehydrogenase (LDH), glucose-6-phosphate dehydrogenase (G-6-PDH), and adenosine triphosphatase (ATPase) of S japonicum. METHODS: Mice infected with S. japonicum cercariae for 32-38 d were treated i.g. with Art 100-300 and killed 24-72 h after treatment for collection of schistosomes. The activities of PP, LDH, and G-6-PDH were measured by the formation of NADH or NADPH. The activity of ATPase was measured by the rate of release of inorganic phosphate (Pi) from ATP at 37 degrees C.

Xiao, S. H.
You, J. Q.
Guo, H. F.
Mei, J. Y.
Jiao, P. Y.
Yao, M. Y.
Zhuang, Z. N.
Feng, Z.
Publication Title: 
Tropical medicine & international health: TM & IH

OBJECTIVE: To evaluate the in vitro efficacy of artesunate (ATN) and artemether (ATH) against Plasmodium falciparum isolates from the Brazilian Amazon state of Pará and to search for mutations and/or altered copy numbers in the putative resistance-associated pfcrt, pfmdr1 and pfATPase6 genes. METHODS: In vitro efficacy of ATN and ATH was successfully measured in 56 freshly collected P. falciparum isolates, using a conventional WHO microtest with minor modifications. Single nucleotide polymorphisms (SNPs) in the same isolates were inspected using DNA sequencing and/or PCR-RFLP.

Ferreira, Isabel D.
Martinelli, Axel
Rodrigues, Louise A.
do Carmo, Ediclei L.
do Rosario, Virgilio E.
Póvoa, Marinete M.
Cravo, Pedro
Publication Title: 
Science (New York, N.Y.)

Recent reports of increased tolerance to artemisinin derivatives--the most recently adopted class of antimalarials--have prompted a need for new treatments. The spirotetrahydro-beta-carbolines, or spiroindolones, are potent drugs that kill the blood stages of Plasmodium falciparum and Plasmodium vivax clinical isolates at low nanomolar concentration. Spiroindolones rapidly inhibit protein synthesis in P. falciparum, an effect that is ablated in parasites bearing nonsynonymous mutations in the gene encoding the P-type cation-transporter ATPase4 (PfATP4).

Rottmann, Matthias
McNamara, Case
Yeung, Bryan K. S.
Lee, Marcus C. S.
Zou, Bin
Russell, Bruce
Seitz, Patrick
Plouffe, David M.
Dharia, Neekesh V.
Tan, Jocelyn
Cohen, Steven B.
Spencer, Kathryn R.
González-Páez, Gonzalo E.
Lakshminarayana, Suresh B.
Goh, Anne
Suwanarusk, Rossarin
Jegla, Timothy
Schmitt, Esther K.
Beck, Hans-Peter
Brun, Reto
Nosten, François
Renia, Laurent
Dartois, Veronique
Keller, Thomas H.
Fidock, David A.
Winzeler, Elizabeth A.
Diagana, Thierry T.
Publication Title: 
Malaria Journal

BACKGROUND: This study was performed to better understand the genetic diversity of known polymorphisms in pfatpase6 and pfmdr1 genes before the introduction of ACT in Brazil, in order to get a genotypic snapshot of Plasmodium falciparum parasites that may be used as baseline reference for future studies. METHODS: Parasites from P. falciparum samples collected in 2002, 2004 and 2006-2007 were genotyped using PCR and DNA sequencing at codons 86, 130, 184, 1034, 1042, 1109 and 1246 for pfmdr1 gene, and 243, 263, 402, 431, 623, 630, 639, 683, 716, 776, 769 and 771 for pfatpase6 gene.

Gama, Bianca E.
de Oliveira, Natália K. Almeida
de Souza, José M.
Santos, Fátima
de Carvalho, Leonardo J. M.
Melo, Yonne F. C.
Rosenthal, Philip J.
Daniel-Ribeiro, Cláudio T.
Ferreira-da-Cruz, Maria de Fátima
Publication Title: 
Malaria Journal

BACKGROUND: Artemisinin-based combination therapy (ACT) is the mainstay of global efforts for treatment of Plasmodium falciparum malaria, but decline in its efficacy is the most important obstacle towards malaria control and elimination. Therefore, the present molecular analysis provides information on putative mutations associated with artemisinin resistance in P. falciparum clinical population unexposed and exposed to artesunate 4 years after adoption of ACT as the first-line anti-malarial therapy in Iran.

Zakeri, Sedigheh
Hemati, Samaneh
Pirahmadi, Sakineh
Afsharpad, Mandana
Raeisi, Ahmad
Djadid, Navid D.
Publication Title: 
Biological Trace Element Research

Cynodon dactylon (Poaceae) is a creeping grass used as a traditional ayurvedic medicine in India. Aluminium-induced neurotoxicity is well known and different salts of aluminium have been reported to accelerate damage to biomolecules like lipids, proteins and nucleic acids. The objective of the present study was to investigate whether the aqueous extract of C. dactylon (AECD) could potentially prevent aluminium-induced neurotoxicity in the cerebral cortex, hippocampus and cerebellum of the rat brain. Male albino rats were administered with AlCl(3) at a dose of 4.2 mg/kg/day i.p.

Sumathi, Thangarajan
Shobana, Chandrasekar
Kumari, Balasubramanian Rathina
Nandhini, Devarajulu Nisha
Publication Title: 
Journal of Ethnopharmacology

ETHNOPHARMACOLOGICAL RELEVANCE: Terminalia pallida is an evergreen endemic tree, mentioned in Ayurveda as the fruits of Terminalia pallida are excellent in cardioprotective property. Tribal people use Terminalia pallida fruit for the treatment of diabetes and this plant widely used in many other disorders. AIM OF STUDY: The present investigation was to evaluate the antioxidant, biochemical profile and histological studies of qualitatively standardized ethanolic extract of Terminalia pallida fruits (TpFE) against isoproterenol-induced myocardial infarction in rats.

Shaik, Althaf Hussain
Rasool, S. N.
Vikram Kumar Reddy, A.
Abdul Kareem, M.
Saayi Krushna, G.
Lakshmi Devi, K.


Subscribe to RSS - Adenosine Triphosphatases