Results 51 to 60 of about 2,170,479 (268)

A Molecular–Structure Hypothesis [PDF]

International Journal of Molecular Sciences, 2010
The self-similar symmetry that occurs between atomic nuclei, biological growth structures, the solar system, globular clusters and spiral galaxies suggests that a similar pattern should characterize atomic and molecular structures. This possibility is explored in terms of the current molecular structure-hypothesis and its extension into four ...
openaire   +3 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Molecular mechanism of influenza A NS1-mediated TRIM25 recognition and inhibition

Nature Communications, 2018
NS1 of influenza A virus inhibits TRIM25 activity, which is an E3 ligase important for induction of the interferon response. Here, Koliopoulos et al. present structures of TRIM25 and NS1 and show how NS1 binding interferes with substrate recognition of ...
Marios G. Koliopoulos, Mathilde Lethier, Annemarthe G. van der Veen, Kevin Haubrich, Janosch Hennig, Eva Kowalinski, Rebecca V. Stevens, Stephen R. Martin, Caetano Reis e Sousa, Stephen Cusack, Katrin Rittinger   +10 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Structural snapshots of the mechanism of ATP-dependent DNA damage recognition by UvrA

Nature Communications
Nucleotide excision repair is a DNA repair pathway which detects and fixes various DNA lesions that distort the structure of DNA. In bacteria, the pathway starts with the UvrA protein which has two adenosine triphosphatase modules and forms dimers.
Shivlee Nirwal, Mariusz Czarnocki-Cieciura, Weronika Zajko, Krzysztof Skowronek, Roman H. Szczepanowski, Marcin Nowotny   +5 more
doaj   +1 more source

Ion selectivity and rotor coupling of the Vibrio flagellar sodium-driven stator unit

Nature Communications, 2023
Bacteria swim using a flagellar motor that is powered by stator units. Vibrio spp. are highly motile bacteria responsible for various human diseases, the polar flagella of which are exclusively driven by sodium-dependent stator units (PomAB).
Haidai Hu, Philipp F. Popp, Mònica Santiveri, Aritz Roa-Eguiara, Yumeng Yan, Freddie J. O. Martin, Zheyi Liu, Navish Wadhwa, Yong Wang, Marc Erhardt, Nicholas M. I. Taylor   +10 more
doaj   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Molecular Structures of Polyglutamates

Kobunshi Kagaku, 1963
いままであまり取り上げられなかった合成ポリペプチドのポリグルタミン酸メチルの高重合体を合成し, 固体薄膜の赤外線吸収スペクトルを岩塩および臭化カリウム領城について測定した。特にα-Helix構造に基く特性吸収帯を調べるため, L型およびD型アミノ酸の各種共重合体を合成し, 吸収スペクトルを比較した。Helix構造に特有であると思われる1120, 800, 720, 620, 563cm-1の各吸収帯を見出し, これらの帰属について調べた。このうちで特に620cm-1の吸収帯はNH面外変角振動に基くアミドV吸収帯と確認され, ポリペプチド分子の空間構造の研究に有用であることがわかった。
openaire   +6 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source