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Journal articles on the topic 'Heterochiral complex'

Author: Grafiati

Published: 21 December 2024

Last updated: 31 July 2025

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1

Kabza, Adam M., Brian E. Young, Nandini Kundu, and Jonathan T. Sczepanski. "Heterochiral nucleic acid circuits." Emerging Topics in Life Sciences 3, no. 5 (2019): 501–6. http://dx.doi.org/10.1042/etls20190102.

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The programmability of DNA/RNA-based molecular circuits provides numerous opportunities in the field of synthetic biology. However, the stability of nucleic acids remains a major concern when performing complex computations in biological environments. Our solution to this problem is l-(deoxy)ribose nucleic acids (l-DNA/RNA), which are mirror images (i.e. enantiomers) of natural d-nucleotides. l-oligonucleotides have the same physical and chemical properties as their natural counterparts, yet they are completely invisible to the stereospecific environment of biology. We recently reported a nove

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2

Komiya, Naruyoshi, Takeharu Kageyama, Masaya Naito, and Takeshi Naota. "A clothes-peg-shaped binucleartrans-bis(2-aminotroponato)palladium(II) complex bearing pentamethylene spacers." Acta Crystallographica Section C Crystal Structure Communications 69, no. 5 (2013): 503–5. http://dx.doi.org/10.1107/s0108270113004484.

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rac-Bis{μ-trans-2,2′-[pentane-1,5-diylbis(azanediyl)]ditroponato}dipalladium(II), [Pd2(C19H20N2O2)2], has been synthesized and fully characterized using single-crystal X-ray diffraction,1H NMR, FT–IR and mass spectroscopy. Thetranscoordination, vaulted structure andanticonformation have been unequivocally established from the X-ray diffraction studies. This is the first example of a bis(aminotroponato)palladium complex. In the crystalline state, the molecule has twofold symmetry and each molecular unit undergoes intermolecular offset π-stacking of the tropone rings to afford heterochiral inter

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3

Bringmann, Gerhard, Doris Feineis, Ralph Brückner, Eva-Maria Peters та Karl Peters. "2-Hexanoyl-1-tribromomethyl-1,2,3,4-tetrahydro-β-carboline: Crystal Structure Analysis of a Potent Inhibitor of Complex I of Mitochondrial Respiration". Zeitschrift für Naturforschung B 55, № 1 (2000): 94–99. http://dx.doi.org/10.1515/znb-2000-0115.

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The molecular structure of the title compound 2-hexanoyl-1-tribromomethyl-1,2,3,4-tetra-hydro-β-carboline (3), a potent inhibitor of complex I of the mammalian mitochondrial respiratory chain, has been studied by single-crystal X-ray diffraction analysis. In the crystal, two heterochiral molecules of 3 (i.e., one R- and one S-configured molecule each) were found to be connected with one other in pairs via two intermolecular hydrogen bonds [O(215) ··· H(212)′ and O(215)′ ··· H(212)] to form an overall achiral ‘dimeric’ subunit

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4

Jiao, Luyang, Mengying Du, Yameng Hou, Yuan Ma, and Xianglei Kong. "Homochiral or Heterochiral: A Systematic Study of Threonine Clusters Using a FT ICR Mass Spectrometer." Symmetry 14, no. 1 (2022): 86. http://dx.doi.org/10.3390/sym14010086.

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The strong chiral preferences of some magic clusters of amino acids have attracted continually increasing interests due to their unique structures, properties and possible roles in homochirogenesis. However, how chirality can influence the generation and stability of cluster ions in a wild range of cluster sizes is still unknown for most amino acids. In this study, the preference for threonine clusters to form homochiral and heterochiral complex ions has been investigated by electrospray ionization (ESI) mass spectrometry. Abundant cluster [Thrn+mH]m+ ions (7 ≤ n ≤ 78, 1 ≤ m ≤ 5) have been obs

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5

Fossey, John S., Ryosuke Matsubara, Hiroshi Kiyohara, and Shū Kobayashi. "Heterochiral Triangulo Nickel Complex as Evidence of a Large Positive Nonlinear Effect in Catalysis." Inorganic Chemistry 47, no. 3 (2008): 781–83. http://dx.doi.org/10.1021/ic7017727.

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6

Roithová, Jana. "Diastereoisomeric proton-bound complexes of 1,5-diaza-cis-decalin in the gas phase." Collection of Czechoslovak Chemical Communications 74, no. 2 (2009): 243–54. http://dx.doi.org/10.1135/cccc2008185.

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Diastereoisomeric proton-bound complexes of 1,5-diaza-cis-decalin (1) with butan-2-amine (2) are studied by means of the DFT calculations and mass spectrometry. The calculations reveal that 2 is bound via proton to only one nitrogen atom of the bicyclic base 1. The homochiral complex is favored by about 4 kJ/mol over the heterochiral complex. For a more loosely bound ion-pair complex [(1H)I(2H)]+ of the protonated bases 1 and 2 with an iodine counterion the energy difference drops to about 2 kJ/mol. Chiral effects in the formation of [(1)H(2)]+ are studied by the collision-induced dissociation

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7

Ragland, Beau, and Lianjun Wu. "Characteristic Analysis of Heterochiral TCP Muscle as a Extensile Actuator for Soft Robotics Applications." Actuators 12, no. 5 (2023): 189. http://dx.doi.org/10.3390/act12050189.

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A soft actuator is an essential component in a soft robot that enables it to perform complex movements by combining different fundamental motion modes. One type of soft actuator that has received significant attention is the twisted and coiled polymer artificial muscle (TCP actuator). Despite many recent advancements in TCP actuator research, its use as an extensile actuator is less common in the literature. This works introduces the concept of using TCP actuators as thermal-driven extensile actuators for robotics applications. The low-profile actuator can be easily fabricated to offer two uni

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8

Matveevskaya, Vladislava, Dmitry Pavlov, and Andrei Potapov. "Iridium(III) and Rhodium(III) Half-Sandwich Coordination Compounds with 11H-Indeno[1,2-b]quinoxalin-11-one Oxime: A Case of Spontaneous Resolution of Rh(III) Complex." Inorganics 10, no. 11 (2022): 179. http://dx.doi.org/10.3390/inorganics10110179.

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Two half-sandwich iridium(III) and rhodium(III) complexes with 11H-indeno[1,2-b]quinoxalin-11-one oxime (IQ-1) ligand were prepared by the reaction of the proligand with [M(Cp*)Cl2]2 (M = Ir, Rh) dimers. The reaction between IQ-1 and [Ir(Cp*)Cl2]2 in methanol gave the complex [Ir(Cp*)(IQ-1)Cl] (1), which crystallized in a centrosymmetric space group as a true racemate. Whereas complex [Rh(Cp*)(IQ-1)Cl] (2) in the form of a racemic conglomerate was obtained by the reaction of [Rh(Cp*)Cl2]2 and IQ-1 in methanol. The crystal structures of complexes 1 and 2 (R and S enantiomers) were determined by

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9

Kazemi, Zahra, Hadi Amiri Rudbari, Mehdi Sahihi, et al. "New homochiral and heterochiral Mo(VI) complex from racemic ligand: Synthesis, X-ray structure, diastereomers separation and biological activities." Polyhedron 170 (September 2019): 70–85. http://dx.doi.org/10.1016/j.poly.2019.05.021.

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10

Řezanka, Tomáš, Andrea Palyzová, Milada Vítová, Tomáš Brányik, Markéta Kulišová, and Jarošová Kolouchová Irena. "Structural Characterization of Mono- and Dimethylphosphatidylethanolamines from Various Organisms Using a Complex Analytical Strategy including Chiral Chromatography." Symmetry 14, no. 3 (2022): 616. http://dx.doi.org/10.3390/sym14030616.

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Two minor phospholipids, i.e., mono- and/or dimethylphosphatidylethanolamines, are widespread in many organisms, from bacteria to higher plants and animals. A molecular mixture of methyl-PE and dimethyl-PE was obtained from total lipids by liquid chromatography and further identified by mass spectrometry. Total methyl-PE and dimethyl-PE were cleaved by phospholipase C, and the resulting diacylglycerols, in the form of acetyl derivatives, were separated into alkyl-acyl, alkenyl-acyl, and diacylglycerols. Reversed-phase LC/MS allowed dozens of molecular species to be identified and further analy

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11

Fox, Allison C., Jason D. Boettger, Eve L. Berger, and Aaron S. Burton. "The Role of the CuCl Active Complex in the Stereoselectivity of the Salt-Induced Peptide Formation Reaction: Insights from Density Functional Theory Calculations." Life 13, no. 9 (2023): 1796. http://dx.doi.org/10.3390/life13091796.

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The salt-induced peptide formation (SIPF) reaction is a prebiotically plausible mechanism for the spontaneous polymerization of amino acids into peptides on early Earth. Experimental investigations of the SIPF reaction have found that in certain conditions, the l enantiomer is more reactive than the d enantiomer, indicating its potential role in the rise of biohomochirality. Previous work hypothesized that the distortion of the CuCl active complex toward a tetrahedral-like structure increases the central chirality on the Cu ion, which amplifies the inherent parity-violating energy differences

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12

Mandal, K., M. Uppalapati, D. Ault-Riche, et al. "Chemical synthesis and X-ray structure of a heterochiral {D-protein antagonist plus vascular endothelial growth factor} protein complex by racemic crystallography." Proceedings of the National Academy of Sciences 109, no. 37 (2012): 14779–84. http://dx.doi.org/10.1073/pnas.1210483109.

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13

Jena, Himanshu Sekhar. "Effect of cooperative non-covalent interactions on the solid state heterochiral self-assembly: The concepts of isotactic and syndiotactic arrangements in coordination complex." Inorganica Chimica Acta 410 (January 2014): 156–70. http://dx.doi.org/10.1016/j.ica.2013.10.035.

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14

Wyszko, Eliza, Mariusz Popenda, Dorota Gudanis, et al. "The model structure of the hammerhead ribozyme formed by RNAs of reciprocal chirality." Bioscience Reports, December 22, 2020. http://dx.doi.org/10.1042/bsr20203424.

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RNA-based tools are frequently used to modulate gene expression in living cells. However, the stability and effectiveness of such RNA-based tools is limited by cellular nuclease activity. One way to increase RNA’s resistance to nucleases is to replace its D-ribose backbone with L-ribose isomers. This modification changes chirality of an entire RNA molecule to L-form giving it more chance of survival when introduced into cells. Recently, we have described the activity of left-handed hammerhead ribozyme (L-Rz, L-HH) that can specifically hydrolyze RNA with the opposite chirality at a predetermin

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15

Sun, Ke, Sicong Li, Bowen Zheng, et al. "Accurate de novo design of heterochiral protein–protein interactions." Cell Research, August 14, 2024. http://dx.doi.org/10.1038/s41422-024-01014-2.

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AbstractAbiotic d-proteins that selectively bind to natural l-proteins have gained significant biotechnological interest. However, the underlying structural principles governing such heterochiral protein–protein interactions remain largely unknown. In this study, we present the de novo design of d-proteins consisting of 50–65 residues, aiming to target specific surface regions of l-proteins or l-peptides. Our designer d-protein binders exhibit nanomolar affinity toward an artificial l-peptide, as well as two naturally occurring proteins of therapeutic significance: the D5 domain of human tropo

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16

Weh, Manuel, Kazutaka Shoyama, and Frank Würthner. "Preferential molecular recognition of heterochiral guests within a cyclophane receptor." Nature Communications 14, no. 1 (2023). http://dx.doi.org/10.1038/s41467-023-35851-3.

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AbstractThe discrimination of enantiomers by natural receptors is a well-established phenomenon. In contrast the number of synthetic receptors with the capability for enantioselective molecular recognition of chiral substrates is scarce and for chiral cyclophanes indicative for a preferential binding of homochiral guests. Here we introduce a cyclophane composed of two homochiral core-twisted perylene bisimide (PBI) units connected by p-xylylene spacers and demonstrate its preference for the complexation of [5]helicene of opposite helicity compared to the PBI units of the host. The pronounced e

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17

Ghorai, Sandipan, and Ramalingam Natarajan. "Chiral Self‐Sorting, Spontaneous Resolution, and Hierarchical Self‐Assembly in Metal–Organic Cages." Small, May 6, 2024. http://dx.doi.org/10.1002/smll.202400842.

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AbstractThe ability to collectively program chiral recognition and the hierarchical self‐assembly of molecular and supramolecular building blocks into complex higher‐order superstructures is a significant goal in supramolecular chemistry. Metal–organic cages are excellent model systems to examine chiral self‐sorting and build hierarchical self‐assembly. Herein, details on how limiting the conformational flexibility and incorporating hydrogen bonding functional groups in the ligands can influence chiral self‐sorting and hierarchical self‐assembly of metal–organic cages are reported. The urea‐fu

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18

el Battioui, Kamal, Sohini Chakraborty, András Wacha, et al. "In situ captured antibacterial action of membrane-incising peptide lamellae." Nature Communications 15, no. 1 (2024). http://dx.doi.org/10.1038/s41467-024-47708-4.

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AbstractDeveloping unique mechanisms of action are essential to combat the growing issue of antimicrobial resistance. Supramolecular assemblies combining the improved biostability of non-natural compounds with the complex membrane-attacking mechanisms of natural peptides are promising alternatives to conventional antibiotics. However, for such compounds the direct visual insight on antibacterial action is still lacking. Here we employ a design strategy focusing on an inducible assembly mechanism and utilized electron microscopy (EM) to follow the formation of supramolecular structures of lysin

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19

Gable, Alice, Emmi Pohjolainen, Gerrit Groenhof, and Fabien B. L. Cougnon. "Chirality Effects in Peptide‐Based Dynamic Combinatorial Chemistry." Chemistry – A European Journal, May 13, 2025. https://doi.org/10.1002/chem.202501298.

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Naturally occurring peptides are almost exclusively composed of L‐amino acids, and the incorporation of D‐amino acids can profoundly alter their ability to fold and self‐assemble. Here we explore the effects of chirality on the formation of disulfide dynamic combinatorial libraries generated by short cysteine‐rich peptides. Our findings consistently show that heterochiral tripeptides form more diverse dynamic combinatorial libraries than their homochiral counterparts. The most complex library appears to encompass all possible cyclic species up to 19mers. Given that each of these species exists

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20

O'Neill, Conor L., Jonathan L. Fascetti, Zoe Clapacs, et al. "Modulating Peptide Self‐Assembly via Triblock Chiral Patterning." Chemistry – A European Journal, June 3, 2025. https://doi.org/10.1002/chem.202404603.

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The suprastructural integrity of peptide self‐assemblies is driven by an intricate array of cohesive interactions that guide and maintain hierarchical order. Seemingly minor alterations to atomic arrangement, such as substitution with D‐amino acids, can dramatically affect assembly potential and resultant architecture. When a primary sequence is comprised of consecutive identical motifs, “block heterochiral” peptides can be generated by partitioning chiral inversions according to these underlying elementary units. In this work, we present a combinatorial exploration of all triblock chiral patt

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21

Kang, Xing, Li Wang, Bingyu Liu, et al. "Mechanically rigid metallopeptide nanostructures achieved by highly efficient folding." Nature Synthesis, September 5, 2024. http://dx.doi.org/10.1038/s44160-024-00640-3.

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AbstractNatural proteins must fold into complex three-dimensional structures to achieve excellent mechanical properties vital for biological functions, but this has proven to be exceptionally difficult to control in synthetic systems. As such, the long-standing issue of low mechanical rigidity and stability induced by misfolding constrains the physical and chemical properties of self-assembling peptide materials. Here we introduce a mixed-chirality strategy that enhances folding efficiency in topologically interlocked metallopeptide nanostructures. The orderly entanglement of heterochiral pept

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22

He, Zixiang, Haotian Ma, Zeyu Tang, Xiaoxiao Cheng, and Wei Zhang. "Chiral Communication between Enantiomeric Sergeants and Achiral Soldiers in Racemic Triblock Copolymers with Heterochiral Cores for Triggering Multiple Helicity Inversions." Angewandte Chemie International Edition, February 11, 2025. https://doi.org/10.1002/anie.202500444.

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Amplification of asymmetry in complex supramolecular/polymer system results from the delicate interplay of chiral and achiral structures. Here, a novel approach to the racemic sergeants and soldiers (S&S) effect, using enantiomeric sergeants (Sgt.) and achiral soldiers (Sold.), achieves unique precise control over both intensity and sign of global chirality. Chiroptical assemblies of different dimensions in racemic S&S copolymers can be constructed in‐situ via polymerization‐induced chiral self‐assembly (PICSA). We systemically investigated chiral communication pathways between chiral‐

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23

He, Zixiang, Haotian Ma, Zeyu Tang, Xiaoxiao Cheng, and Wei Zhang. "Chiral Communication between Enantiomeric Sergeants and Achiral Soldiers in Racemic Triblock Copolymers with Heterochiral Cores for Triggering Multiple Helicity Inversions." Angewandte Chemie, February 11, 2025. https://doi.org/10.1002/ange.202500444.

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Amplification of asymmetry in complex supramolecular/polymer system results from the delicate interplay of chiral and achiral structures. Here, a novel approach to the racemic sergeants and soldiers (S&S) effect, using enantiomeric sergeants (Sgt.) and achiral soldiers (Sold.), achieves unique precise control over both intensity and sign of global chirality. Chiroptical assemblies of different dimensions in racemic S&S copolymers can be constructed in‐situ via polymerization‐induced chiral self‐assembly (PICSA). We systemically investigated chiral communication pathways between chiral‐

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24

Seo, Wonbin, Carter S. Haines, Hongdeok Kim, et al. "Azobenzene‐Functionalized Semicrystalline Liquid Crystal Elastomer Springs for Underwater Soft Robotic Actuators." Small, October 21, 2024. http://dx.doi.org/10.1002/smll.202406493.

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AbstractAs actuated devices become smaller and more complex, there is a need for smart materials and structures that directly function as complete mechanical units without an external power supply. The strategy uses light‐powered, twisted, and coiled azobenzene‐functionalized semicrystalline liquid crystal elastomer (AC‐LCE) springs. This twisting and coiling, which has previously been used for only thermally, electrochemically, or absorption‐powered muscles, maximizes uniaxial and radial actuation. The specially designed photochemical muscles can undergo about 60% tensile stroke and provide 1

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25

Domingos, Sérgio R., Denis S. Tikhonov, Amanda L. Steber, et al. "Evolution of the ionisation energy with the stepwise growth of chiral clusters of [4]helicene." Nature Communications 15, no. 1 (2024). http://dx.doi.org/10.1038/s41467-024-48778-0.

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AbstractPolycyclic aromatic hydrocarbons (PAHs) are widely established as ubiquitous in the interstellar medium (ISM), but considering their prevalence in harsh vacuum environments, the role of ionisation in the formation of PAH clusters is poorly understood, particularly if a chirality-dependent aggregation route is considered. Here we report on photoelectron spectroscopy experiments on [4]helicene clusters performed with a vacuum ultraviolet synchrotron beamline. Aggregates (up to the heptamer) of [4]helicene, the smallest PAH with helical chirality, were produced and investigated with a com

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