CarbonNitrogenUbiquitin-Protein LigasesDNA LigasesSKP Cullin F-Box Protein LigasesNitrogen FixationCarbon DioxideCarbon MonoxideNanotubes, CarbonCullin ProteinsUbiquitinationNitrogen IsotopesNitrogen CompoundsPolynucleotide LigasesNitrogen CycleNitrogen DioxideUbiquitinBlood Urea NitrogenCoenzyme A LigasesRING Finger DomainsCarbon Monoxide PoisoningCarbon IsotopesUbiquitin-Conjugating EnzymesReactive Nitrogen SpeciesRNA Ligase (ATP)Molecular Sequence DataNitrogen OxidesPII Nitrogen Regulatory ProteinsCarbon TetrachlorideCarbon SequestrationF-Box ProteinsEndosomal Sorting Complexes Required for TransportAmino Acid SequenceNitratesAmmoniaCarbon DisulfideBiomassFertilizersUbiquitinsSoilProteasome Endopeptidase ComplexPeptide SynthasesMutationQuaternary Ammonium CompoundsSubstrate SpecificityUbiquitin-Protein Ligase ComplexesProtein BindingPolyubiquitinProtein Structure, TertiaryBacterial ProteinsAmino AcidsUbiquitin-Activating EnzymesCarbon-Oxygen LigasesCarbon Tetrachloride PoisoningGlutamate-Ammonia LigaseSaccharomyces cerevisiaeProto-Oncogene Proteins c-cblCulture MediaModels, BiologicalProteolysisUreaSequence Homology, Amino AcidSymbiosisAtmospherePlant RootsSaccharomyces cerevisiae ProteinsPhotosynthesisS-Phase Kinase-Associated ProteinsProtein Inhibitors of Activated STATPlant LeavesPhylogenyNitrogenaseSUMO-1 ProteinKineticsSmall Ubiquitin-Related Modifier ProteinsNitrogen Mustard CompoundsEcosystemOxidation-ReductionCatalysisCarbon FootprintGene Expression Regulation, BacterialModels, MolecularCarbon RadioisotopesBase SequenceBiodegradation, EnvironmentalTreesEscherichia coliHydrogen-Ion ConcentrationBacteriaCarrier ProteinsTemperatureGlutamineOxygenBinding SitesAcetyleneSumoylationAdenosine MonophosphateSoil MicrobiologyLysineSignal Transduction