An unexpected co-crystal structure of the calpain PEF(S) domain with Hfq reveals a potential chaperone function of Hfq
Calpain is a Ca2+-activated, heterodimeric cysteine protease consisting of a large catalytic subunit and a small regulatory subunit. Dysregulation of this enzyme is involved in a range of pathological conditions such as cancer, Alzheimer's disease and rheumatoid arthritis, and thus calpain I is a drug target with potential therapeutic applications. Difficulty in the production of this enzyme has hindered structural and functional investigations in the past, although heterodimeric calpain I can be generated by Escherichia coli expression in low yield. Here, an unexpected structure discovered during crystallization trials of heterodimeric calpain I (CAPN1C115S + CAPNS1 Δ GR) is reported. A novel co-crystal structure of the PEF(S) domain from the dissociated regulatory small subunit of calpain I and the RNA-binding chaperone Hfq, which was likely to be overproduced as a stress response to the recombinant expression conditions, was obtained, providing unexpected insight in the chaperone function of Hfq.
CONCLUSIONS: Simultaneous CRC and CRLM resections seem to be safe when patients are carefully selected, also considering the risk of recurrence concerning oncologic outcomes. The pre-planning of simultaneous resection is mandatory to plan trocar positioning, procedure sequencing, and patient position. PMID: 32490901 [PubMed - in process]
Publication date: Available online 3 June 2020Source: Carbohydrate PolymersAuthor(s): Ben Newland, Carmine Varricchio, Yvonne Körner, Franziska Hoppe, Christian Taplan, Heike Newland, Dimitri Eigel, Giusy Tornillo, Dagmar Pette, Andrea Brancale, Petra B. Welzel, F. Philipp Seib, Carsten Werner
Publication date: Available online 3 June 2020Source: Carbohydrate PolymersAuthor(s): Zhuodong Chai, Chao Teng, Lei Yang, Lianjie Ren, Zhongyue Yuan, Siyuan Xu, Manman Cheng, Yanmei Wang, Zhen Yan, Chao Qin, Xiaopeng Han, Lifang Yin
CONCLUSION: a Navigation Program was developed adapted to the Brazilian reality, and attributions of the navigators were created. PMID: 32491120 [PubMed - in process]
Publication date: Available online 3 June 2020Source: Colloids and Surfaces B: BiointerfacesAuthor(s): Houhe Liu, Yusi Quan, Xinlin Jiang, Xiaotian Zhao, Yi Zhou, Jijun Fu, Lingran Du, Xiaoya Zhao, Jing Zhao, Lu Liang, Di Yi, Yugang Huang, Guodong Ye
Publication date: Available online 3 June 2020Source: Sensors and Actuators B: ChemicalAuthor(s): Hui-Min Wang, Ai-Jun Wang, Pei-Xin Yuan, Jiu-Ju Feng
Chem. Commun., 2020, Accepted Manuscript DOI: 10.1039/D0CC03589K, CommunicationLongbing Ling, Haizhou Yu, Muhammad Ismail, Yan-Ping Zhu, Yuan Du, Junhui Qi An amphiphilic dimeric-podophyllotoxin (PODO) phospholipid was synthesized to assemble into liposomes as a combination of prodrug and nanocarriers. Results have demonstrated cell membrane-like delivery system possessed an improved cellular uptake... The content of this RSS Feed (c) The Royal Society of Chemistry
Chem. Commun., 2020, Accepted Manuscript DOI: 10.1039/D0CC01971B, CommunicationWenxiao Wu, Tingting Zheng, Yang Tian An enzyme-free amplification strategy based on two-photon fluorescent carbon dots for monitoring miR-9 in live neurons and brain tissues of Alzheimer ’s disease (AD) mice. Notably, using our developed probe, miR-9... The content of this RSS Feed (c) The Royal Society of Chemistry
Are there seasonal variations in resistance to fluoroqinolones and other antimicrobial agents among community-acquired urinary E. coli infections?American Journal of Epidemiology
A "NICE" advance toward developing replacement bone tissues for treating arthritis, bone fractures, dental infections and craniofacial defects.This is an NSF Multimedia Gallery item.