title: 1H and 13C assignments of cyclo[N-(Lys-Phe)-Orn-Val], a semicyclic imide tetrapeptide from Burkholderia cepacia.
abstract: The rhizobacteria Burkholderia cepacia biosynthesized the new tetrapeptide Cyclo[N-(Lys-Phe)-Orn-Val] (1), a 2,5-diketopiperazine, and the known siderophore azurechelin (salicylic acid). The structure of 1 was established by means of IR, UV, 1H and 13C NMR, double dimension experiments and MS.
authors.affiliation: Centro de Investigaciones Químicas de la Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, 62209, Cuernavaca, Morelos, México.
authors.forename: Lemuel
authors.initials: L
authors.lastname: Pérez-Picaso
authors.forename: María Yolanda
authors.initials: MY
authors.lastname: Rios
authors.forename: Ana Niurka
authors.initials: AN
authors.lastname: Hernández
authors.forename: Jorge
authors.initials: J
authors.lastname: Martínez
mesh_terms: D016956:Burkholderia cepacia / Q000378:metabolism*; D002247:Carbon Isotopes / Q000032:analysis; D006859:Hydrogen / Q000032:analysis; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010456:Peptides, Cyclic / Q000096:biosynthesis / Q000737:chemistry* / Q000302:isolation & purification; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002247:Carbon Isotopes; D010456:Peptides, Cyclic; C522481:cyclo(N-(lysyl-phenylalanyl)ornithyl-valyl); D006859:Hydrogen