Results 41 to 50 of about 407,317 (358)

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

A metabolome-wide association study of in utero metal and trace element exposures with cord blood metabolome profile: Findings from the Boston Birth Cohort

Environment International, 2022
Background: Exposure to metals lead (Pb), mercury (Hg), and cadmium (Cd) and trace elements selenium (Se) and manganese (Mn) has been linked to the developmental origins of cardiometabolic diseases, but the mechanisms are not well-understood.
Mingyu Zhang, Jessie P Buckley, Liming Liang, Xiumei Hong, Guoying Wang, Mei-Cheng Wang, Marsha Wills-Karp, Xiaobin Wang, Noel T Mueller   +8 more
doaj   +1 more source

Heavy metals partioning in three French forest soils by sequential extraction procedure [PDF]

, 2003
To know the concentration of heavy metal associated to chemical compounds is important to evaluate the environmental risks on soils, particularly regarding ion bioavailability.
Hernandez, Laura, Probst, Anne, Probst, Jean-Luc   +2 more
core   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Soluble trace metals associated with atmospheric fine particulate matter in the two most populous cities in Vietnam

Atmospheric Environment: X, 2022
Hanoi and Ho Chi Minh City (HCM), the most populous cities in Vietnam, have received increasing global attention because of their poor air pollution status.
To Thi Hien, Nguyen Doan Thien Chi, Duong Huu Huy, Hoang Anh Le, David E. Oram, Grant L. Forster, Graham P. Mills, Alex R. Baker   +7 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Magnetic mineral characteristics, trace metals, and REE geochemistry of river sediments that serve as inlets to Lake Limboto, Sulawesi, Indonesia

Data in Brief, 2019
This article presents magnetic mineral characteristics, trace metals, and REE geochemistry of river sediments that serve as inlets to Lake Limboto, Sulawesi, Indonesia related to article entitled “Lithogenic and anthropogenic components in surface ...
Satria Bijaksana, Raghel Yunginger, Abd Hafidz, Mariyanto Mariyanto   +3 more
doaj   +1 more source

Trace Metal Dynamics in a Tropical Mangrove Tidal Creek: Influence of Porewater Seepage (Can Gio, Vietnam)

Frontiers in Environmental Science, 2020
Mangrove soils are considered as sinks for trace metals, protecting coastal waters from pollutions. However, the cycling of trace metals in mangroves is complex due to various biogeochemical processes across the intertidal zone, notably the dissolution ...
Nguyen Thanh-Nho, Nguyen Thanh-Nho, Cyril Marchand, Cyril Marchand, Emilie Strady, Emilie Strady, Truong Van Vinh, Truong Van Vinh, Pierre Taillardat, Nguyen Cong-Hau, Tran-Thi Nhu-Trang   +10 more
doaj   +1 more source

Geochemical-geophysical investigations, Fairbanks district [PDF]

, 1967
Trace element distribution in a subarctic valley in the Cleary Hill area of the Fairbanks gold district has been studied. Zinc and arsenic have been found excellent pathfinder elements for auriferous deposits. Methods of analysis for copper, lead, zinc,
Beistline, E.H., Heiner, L.E., Loperfido, J.C., Moody, D.W., Peterson, R.J., Thomas, B.I., Wallis, J.E., Wolff, E.N.   +7 more
core