Results 61 to 70 of about 556,680 (355)

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

Structures and Ribosomal Interaction of Ribosome-Inactivating Proteins [PDF]

Molecules, 2016
Ribosome-inactivating proteins (RIPs) including ricin, Shiga toxin, and trichosanthin, are RNA N-glycosidases that depurinate a specific adenine residue (A-4324 in rat 28S ribosomal RNA, rRNA) in the conserved α-sarcin/ricin loop (α-SRL) of rRNA.
Wei-Wei Shi, Amanda Nga-Sze Mak, Kam-Bo Wong, Pang-Chui Shaw   +3 more
openaire   +3 more sources

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

Liver cancer cells with nuclear MET overexpression release translation regulatory protein‐enriched extracellular vesicles exhibit metastasis promoting activity

Journal of Extracellular Biology, 2022
MET receptor tyrosine kinase is a cell surface receptor that plays important role in embryonic development and tissue regeneration. Aberrant MET activation has been widely reported in different human cancers, making MET an attractive therapeutic target ...
Sze Keong Tey, Samuel Wan Ki Wong, Cherlie Lot Sum Yeung, Jason Ying Ki Li, Xiaowen Mao, Clive Yik Sham Chung, Judy Wai Ping Yam   +6 more
doaj   +1 more source

HCV IRES manipulates the ribosome to promote the switch from translation initiation to elongation. [PDF]

, 2013
The internal ribosome entry site (IRES) of the hepatitis C virus (HCV) drives noncanonical initiation of protein synthesis necessary for viral replication.
A Ben-Shem, A Devaraj, AA Malygin, AD Petropoulos, AY Keel, Breanna S Vollmar, C Chen, CM Spahn, CS Fraser, CS Fraser, D Boehringer, D Hartz, D Sousa, Dan Shi, DD Ian'shina, DV Sizova, EF Pettersen, F Odreman-Macchioli, F Peske, F Robert, GA Otto, GJ Kleywegt, H Ji, IB Lomakin, IM Terenin, J Bukh, J Rabl, J Wower, JA Mindell, JE Wilson, Jeffrey S Kieft, JH Kim, JM Fringer, JR Lytle, JR Lytle, JS Kieft, JS Kieft, K Tsukiyama-Kohara, KE Berry, KI Kalliampakou, LA Passmore, M Honda, M Ohi, M Selmer, M Stoneley, M van Heel, ME Filbin, Megan E Filbin, MG Acker, MM Yusupov, N Grigorieff, N Locker, O Galkin, P Antúnez de Mayolo, P Simmonds, PJ Lukavsky, PJ Lukavsky, RE Monro, RJ Jackson, S Fukushi, S Uemura, SM Dibrov, T Döring, Tamir Gonen, TV Pestova, TV Pestova, U Geigenmüller, VG Kolupaeva, Y Yu   +68 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

pS6K1 as an efficacy marker of GnRH agonist with premenopausal breast cancer

Endocrine Connections, 2019
Estradiol is a key factor for tumorigenesis and prognosis of hormone receptor-positive breast cancer. Adipocytes are one source of estradiol in patients with breast cancer. Recent studies have shown that phosphorylated ribosomal protein S6 kinase-1 plays
Chan Sub Park, Jihye Choi, Min-Ki Seong, Sung-Eun Hong, Jae-Sung Kim, In-Chul Park, Hyesil Seol, Woo Chul Noh, Hyun-Ah Kim   +8 more
doaj   +1 more source

Ancestral Interactions of Ribosomal RNA and Ribosomal Proteins [PDF]

Biophysical Journal, 2017
We have proposed that the ancient ribosome increased in size during early evolution by addition of small folding-competent RNAs. In this Accretion Model, small RNAs and peptides were subsumed onto subunit surfaces, gradually encasing and freezing previously acquired components.
Kathryn A, Lanier, Poorna, Roy, Dana M, Schneider, Loren Dean, Williams   +3 more
openaire   +2 more sources

Inhibiting stearoyl‐CoA desaturase suppresses bone metastatic prostate cancer by modulating cellular stress, mTOR signaling, and DNA damage response

FEBS Letters, EarlyView.
Bone metastasis in prostate cancer (PCa) patients is a clinical hurdle due to the poor understanding of the supportive bone microenvironment. Here, we identify stearoyl‐CoA desaturase (SCD) as a tumor‐promoting enzyme and potential therapeutic target in bone metastatic PCa.
Alexis Wilson, Mackenzie K Herroon, Shane Mecca, Laimar C Garmo, Jacob Lindquist, Shrila Rajendran, Steve M. Patrick, Izabela Podgorski   +7 more
wiley   +1 more source

Chloroplast Hibernation-Promoting Factor PSRP1 Prevents Ribosome Degradation Under Darkness Independently of 100S Dimer Formation

Plants
Ribosome hibernation is a conserved translational stress response in bacteria, regulated by the hibernation-promoting factor (HPF). Plastid-specific ribosomal protein 1 (PSRP1) is the chloroplast ortholog of bacterial HPF.
Kenta Tanaka, Yusuke Yoshizawa, Takashi Oda, Yasuhiko Sekine   +3 more
doaj   +1 more source