title: Persipeptides A and B, two cyclic peptides from Streptomyces sp. UTMC 1154.
abstract: Two new N-methylated cyclopeptides, persipeptide A (1) and B (2), have been isolated from Streptomyces sp. UTMC1154. Their structures were established using 1D and 2D NMR experiments. 2D TOCSY experiments were applied to identify the amino acid residues, while HMBC correlations were used to determine their sequence. According to Marfey's method, all amino acids had the l-configuration. The two cyclic peptides had the same ring size and amino acid composition, but differed in their sequence; they did not show activity against the tested bacteria, fungi and algae. Molecular identification experiments placed the strain in the genus Streptomyces closely related to Streptomyces coerulescens DSM40146(T) (99.45%) and Streptomyces varsoviensis DSM40346(T) (99.25%).
authors.affiliation: Department of Organic Chemistry, University of Göttingen, Tammanstrasse 2, D-37077 Göttingen, Germany.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Mohammadipanah
authors.forename: Josphat
authors.initials: J
authors.lastname: Matasyoh
authors.forename: Javad
authors.initials: J
authors.lastname: Hamedi
authors.forename: Hans-Peter
authors.initials: HP
authors.lastname: Klenk
authors.forename: Hartmut
authors.initials: H
authors.lastname: Laatsch
mesh_terms: D000595:Amino Acid Sequence; D001419:Bacteria / Q000187:drug effects; D005658:Fungi / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D008968:Molecular Conformation; D010456:Peptides, Cyclic / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D013302:Streptomyces / Q000378:metabolism*
chemical_list: D010456:Peptides, Cyclic; C571776:persipeptide A; C571777:persipeptide B