Peptide-like molecule, which has a close connection with the origin of life, has been detected in universe. Mapping observations of HCONH2 and CH3CONH2, two simplest peptide-like molecules, are performed towards […]
Peptide
![(A) The proposed active complex proposed by Rode et al. (1990) for the SIPF reaction for a protonated and neutral alanine molecule [18]. (B) Another plausible SIPF active complex between two neutral alanine molecules in a cis configuration as proposed by Rimola et al. (2007) [20]. Here, cis refers to the relative position of the N (or equivalently O) atoms on the same side of the plane containing the Cu atom. In this figure, red denotes oxygen, blue denotes nitrogen, gray denotes carbon, light gray denotes hydrogen, orange denotes copper, and green denotes chlorine. -- Life](https://i0.wp.com/astrobiology.com/wp-content/uploads/2023/10/TheRoleOf.png?resize=1200%2C719&ssl=1)
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Status Report
The Role of the CuCl Active Complex in the Stereoselectivity of the Salt-Induced Peptide Formation Reaction: Insights from Density Functional Theory Calculations
The salt-induced peptide formation (SIPF) reaction is a prebiotically plausible mechanism for the spontaneous polymerization of amino acids into peptides on early Earth.
![Effect of temperature on the peptide aggregation process. Left: side view of (ODAP—STEP) bilayer systems with peptides at 0 ns (a) and 500 ns at 353 K (b), 338 K (c), and 323 K (d); KSPFPFAA peptides are shown in mauve, while ODAP and STEP are in gray and green, respectively. Right: number of the clusters as a function of time formed during the 500 ns MD simulation with cutoff 0.6 nm at 353 K (e) (previously reported by the authors in Ref. [44]), 338 K (f), and 323 (g) -- Life](https://i0.wp.com/astrobiology.com/wp-content/uploads/2023/09/structural.png?resize=1200%2C716&ssl=1)
Posted inBiochemistry & Organic Chemistry, Biophysics, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Status Report
Structural Phenomena in a Vesicle Membrane Obtained through an Evolution Experiment: A Study Based on MD Simulations
The chemical evolution of biomolecules was clearly affected by the overall extreme environmental conditions found on Early Earth.
Posted inOrigin & Evolution of Life, Press Release
Scientists Identify Protein That May Have Existed When Life Began on Earth
How did life arise on Earth? Rutgers researchers have found among the first and perhaps only hard evidence that simple protein catalysts – essential for cells, the building blocks of […]