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Samoilova RI, Syryamina VN, Tsvetkov YD, Dzuba SA, Toniolo C, Formaggio F. Epr Spectroscopy of Adsorbed Spin-Labeled Peptides: Immobilization of Trichogin on the Titanium Oxide. J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476618060070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Das S, Ben Haj Salah K, Djibo M, Inguimbert N. Peptaibols as a model for the insertions of chemical modifications. Arch Biochem Biophys 2018; 658:16-30. [DOI: 10.1016/j.abb.2018.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/05/2018] [Accepted: 09/18/2018] [Indexed: 12/13/2022]
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3
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Singh VP, Yedukondalu N, Sharma V, Kushwaha M, Sharma R, Chaubey A, Kumar A, Singh D, Vishwakarma RA. Lipovelutibols A-D: Cytotoxic Lipopeptaibols from the Himalayan Cold Habitat Fungus Trichoderma velutinum. JOURNAL OF NATURAL PRODUCTS 2018; 81:219-226. [PMID: 29373791 DOI: 10.1021/acs.jnatprod.6b00873] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Four novel lipovelutibols A (1), B (2), C (3), and D (4) containing six amino acid residues with leucinol at the C-terminus and a fatty acyl moiety (n-octanoyl) at its N-terminus were isolated from the psychrotrophic fungus Trichoderma velutinum collected from the Himalayan cold habitat. The structures (1-4) were determined by NMR and MS/MS, and the stereochemistry of amino acids by Marfey's method. Lipopeptaibols 2 and 4 were found to contain d-isovaline, a nonproteinogenic amino acid, but lacked α-aminoisobutyric acid, characteristic of peptaibols. Cytotoxic activity of 2 and 4 was observed against HL-60, LS180, MDA-MB-231, and A549 cancer cell lines.
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Affiliation(s)
- Varun Pratap Singh
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
- Department of Biotechnology, Faculty of Sciences, Shri Mata Vaishno Devi University , Katra, Jammu and Kashmir 182320, India
| | - Nalli Yedukondalu
- Academy of Scientific and Innovative Research , Jammu 180 001, India
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
| | - Vandana Sharma
- Quality Control and Quality Assurance, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
| | - Manoj Kushwaha
- Quality Control and Quality Assurance, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
| | - Richa Sharma
- Academy of Scientific and Innovative Research , Jammu 180 001, India
- Fermentation Technology Division, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
| | - Asha Chaubey
- Academy of Scientific and Innovative Research , Jammu 180 001, India
- Fermentation Technology Division, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
| | - Anil Kumar
- Department of Biotechnology, Faculty of Sciences, Shri Mata Vaishno Devi University , Katra, Jammu and Kashmir 182320, India
| | - Deepika Singh
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
- Academy of Scientific and Innovative Research , Jammu 180 001, India
- Quality Control and Quality Assurance, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
| | - Ram A Vishwakarma
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine , Canal Road, Jammu 180 001, India
- Academy of Scientific and Innovative Research , Jammu 180 001, India
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4
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Bobone S, De Zotti M, Bortolotti A, Biondi B, Ballano G, Palleschi A, Toniolo C, Formaggio F, Stella L. The fluorescence and infrared absorption probepara-cyanophenylalanine: Effect of labeling on the behavior of different membrane-interacting peptides. Biopolymers 2015; 104:521-32. [DOI: 10.1002/bip.22674] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/30/2015] [Accepted: 05/04/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Sara Bobone
- Department of Chemical Sciences and Technologies; University of Rome Tor Vergata; 00133 Rome Italy
| | - Marta De Zotti
- Department of Chemistry; University of Padova; 35131 Padova Italy
| | - Annalisa Bortolotti
- Department of Chemical Sciences and Technologies; University of Rome Tor Vergata; 00133 Rome Italy
| | - Barbara Biondi
- Institute of Biomolecular Chemistry, Padova Unit, CNR; 35131 Padova Italy
| | - Gema Ballano
- Department of Chemistry; University of Padova; 35131 Padova Italy
| | - Antonio Palleschi
- Department of Chemical Sciences and Technologies; University of Rome Tor Vergata; 00133 Rome Italy
| | - Claudio Toniolo
- Department of Chemistry; University of Padova; 35131 Padova Italy
- Institute of Biomolecular Chemistry, Padova Unit, CNR; 35131 Padova Italy
| | - Fernando Formaggio
- Department of Chemistry; University of Padova; 35131 Padova Italy
- Institute of Biomolecular Chemistry, Padova Unit, CNR; 35131 Padova Italy
| | - Lorenzo Stella
- Department of Chemical Sciences and Technologies; University of Rome Tor Vergata; 00133 Rome Italy
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Beasley KN, Sutch BT, Hatmal MM, Langen R, Qin PZ, Haworth IS. Computer Modeling of Spin Labels: NASNOX, PRONOX, and ALLNOX. Methods Enzymol 2015; 563:569-93. [PMID: 26478499 DOI: 10.1016/bs.mie.2015.07.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Measurement of distances between spin labels using electron paramagnetic resonance with the double electron-electron resonance (DEER) technique is an important method for evaluation of biomolecular structures. Computation of interlabel distances is of value for experimental planning, validation of known structures using DEER-measured distances, and determination of theoretical data for comparison with experiment. This requires steps of building labels at two defined sites on proteins, DNA or RNA; calculation of allowable label conformers based on rotation around torsional angles; computation of pairwise interlabel distances on a per conformer basis; and calculation of an average distance between the two label ensembles. We have described and validated two programs for this purpose: NASNOX, which permits computation of distances between R5 labels on DNA or RNA; and PRONOX, which similarly computes distances between R1 labels on proteins. However, these programs are limited to a specific single label and single target types. Therefore, we have developed a program, which we refer to as ALLNOX (Addition of Labels and Linkers), which permits addition of any label to any site on any target. The main principle in the program is to break the molecular system into a "label," a "linker," and a "target." The user can upload a "label" with any chemistry, define a "linker" based on a SMILES-like string, and then define the "target" site. The flexibility of ALLNOX facilitates theoretical evaluation of labels prior to synthesis and accommodates evaluation of experimental data in biochemical complexes containing multiple molecular types.
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Affiliation(s)
- Kathleen N Beasley
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, Los Angeles, California, USA
| | - Brian T Sutch
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, Los Angeles, California, USA
| | - Ma'mon M Hatmal
- Department of Laboratory Medical Sciences, Faculty of Allied Health Sciences, Hashemite University, Zarqa, Jordan
| | - Ralf Langen
- Department of Biochemistry, University of Southern California, Los Angeles, California, USA
| | - Peter Z Qin
- Department of Chemistry and Department of Biological Sciences, University of Southern California, Los Angeles, California, USA
| | - Ian S Haworth
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, Los Angeles, California, USA; Department of Biochemistry, University of Southern California, Los Angeles, California, USA.
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