The PII-NAGK-PipX-NtcA Regulatory Axis of Cyanobacteria: A Tale of Changing Partners, Allosteric Effectors and Non-covalent Interactions [PDF]
Frontiers in Molecular Biosciences, 2018 PII, a homotrimeric very ancient and highly widespread (bacteria, archaea, plants) key sensor-transducer protein, conveys signals of abundance or poorness of carbon, energy and usable nitrogen, converting these signals into changes in the activities of ...
Alicia Forcada-Nadal +8 more
doaj +5 more sources
Temperature changes are signaled in cyanobacteria through the PipX interaction network [PDF]
Frontiers in MicrobiologyCyanobacteria perform oxygenic photosynthesis and have evolved sophisticated mechanisms to adapt their metabolism to challenging environmental changes.
Antonio Llop +8 more
doaj +3 more sources
Mutational analyses reveal PLP-independent functions at PipY, the cyanobacterial paradigm for pyridoxal-phosphate binding proteins [PDF]
Scientific ReportsPyridoxal-phosphate binding proteins (PLPBP) are involved in the homeostasis of B6 vitamers and amino/keto acids, share a high degree of sequence conservation and are represented in all three domains of life. Despite the obligate presence of the catalyst
Antonio Llop +2 more
doaj +2 more sources
STUDIES OF ACTIVATION OF GALENA BY COPPER AND XANTHATE (PIPX) SYNTHESIZED COLLECTORS ADSORPTION [PDF]
Journal of Engineering Science and Technology, 2015 In this study, we suggest proceeding to an experimental study concerning the synthesis of new organo metallic product xanthate (PIPX) by intermittent method and their use in the processes of sulphides flotation.
Z. NEDJAR, D. BARKAT
doaj +2 more sources
PipY, a Member of the Conserved COG0325 Family of PLP-Binding Proteins, Expands the Cyanobacterial Nitrogen Regulatory Network [PDF]
Frontiers in Microbiology, 2017 Synechococcus elongatus PCC 7942 is a paradigmatic model organism for nitrogen regulation in cyanobacteria. Expression of genes involved in nitrogen assimilation is positively regulated by the 2-oxoglutarate receptor and global transcriptional regulator ...
José I. Labella +7 more
doaj +2 more sources
mSystems, 2017 Prochlorococcus requires the capability to accommodate to environmental changes in order to proliferate in oligotrophic oceans, in particular regarding nitrogen availability.
Maria Agustina Domínguez-Martín +5 more
doaj +1 more source
SoftwareXThis software update extends the existing AccuClass tool by introducing a Streamlit-based graphical user interface (GUI), simplifying installation through a precompiled wheel compatible with pipx, and synchronizing documentation across the README and ...
P. Kramarczyk, B. Hejmanowska
doaj +1 more source
PipX, the Coactivator of NtcA, Is a Global Regulator in Cyanobacteria [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2014 To modulate the expression of genes involved in nitrogen assimilation, the cyanobacterial PII-interacting protein X (PipX) interacts with the global transcriptional regulator NtcA and the signal transduction protein PII, a protein found in all three ...
Asuncion Contreras +2 more
exaly +3 more sources
Structural Basis for the Regulation of NtcA-Dependent Transcription by Proteins PipX and PII
Proceedings of the National Academy of Sciences of the United States of America, 2010 PII, an ancient and widespread signaling protein, transduces nitrogen/carbon/energy abundance signals through interactions with target proteins. We clarify structurally how PII regulates gene expression mediated by the transcription factor NtcA, the ...
José L. Llácer +2 more
exaly +2 more sources
Effects of Spontaneous Mutations in PipX Functions and Regulatory Complexes on the Cyanobacterium Synechococcus elongatus Strain PCC 7942 [PDF]
Microbiology (United Kingdom), 2010 In Synechococcus elongatus sp. PCC 7942, PipX forms complexes with PII, a protein found in all three domains of life as an integrator of signals of the nitrogen and carbon balance, and with the cyanobacterial nitrogen regulator NtcA.
Asuncion Contreras +2 more
exaly +2 more sources