- Title Pages
- Foreword
- Preface
- Acknowledgments
-
Introduction: Life’s Sensibilities -
1 Valuable Viruses -
2 More Like a Waterfall -
3 Alarmones -
4 Early Sensibilities -
5 Smart Bacteria -
6 Ancient Architects -
7 Others -
8 Nested Communities -
9 Cosmic Rhythms of Life -
10 Life’s Tectonics -
11 Evolutionary Illumination -
12 Symbiogenesis in Russia -
13 From Movement to Sensation -
14 Packaging DNA -
15 Lemurs and Split Chromosomes -
16 Interspecies Hybrids -
17 Origins of the Immune System -
18 Medical Symbiotics -
19 Animal Consciousness -
20 Brains and Symbols -
21 Thermodynamics and Thought -
22 “I Know Who You Are; I Know Where You Live” -
23 Cultural Networks - Bibliography
-
Appendix A: Major Groups of Living Organisms -
Appendix B: The International Geological Time Scale (Time-Rock Divisions) - Glossary
- About the Authors
- Index
- [UNTITLED]
Alarmones
Alarmones
- Chapter:
- (p.34) (p.35) 3 Alarmones
- Source:
- Chimeras and Consciousness
- Author(s):
Antonio Lazcano
Arturo Becerra
Luis Delaye
- Publisher:
- The MIT Press
This chapter addresses the significance of alarmones, analogous to plant and animal hormones. It considers the remarkable conservation of cyclic adenosine monophosphate (cAMP), a social hormone related to sensation and action. It also places the roots of sensation in alarmones. This chapter suggests that alarmones may have first appeared during an early evolutionary stage. It shows that cAMP was already present in the Last Common Ancestor (LCA). It also reveals that the genes involved in cAMP synthesis may have undergone branch-specific gene duplications, lateral transfer events, and secondary losses, and may have evolved independently in different prokaryotes.
Keywords: alarmones, cyclic adenosine monophosphate, sensation, Last Common Ancestor, gene duplications, lateral transfer events, secondary losses, prokaryotes
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- Title Pages
- Foreword
- Preface
- Acknowledgments
-
Introduction: Life’s Sensibilities -
1 Valuable Viruses -
2 More Like a Waterfall -
3 Alarmones -
4 Early Sensibilities -
5 Smart Bacteria -
6 Ancient Architects -
7 Others -
8 Nested Communities -
9 Cosmic Rhythms of Life -
10 Life’s Tectonics -
11 Evolutionary Illumination -
12 Symbiogenesis in Russia -
13 From Movement to Sensation -
14 Packaging DNA -
15 Lemurs and Split Chromosomes -
16 Interspecies Hybrids -
17 Origins of the Immune System -
18 Medical Symbiotics -
19 Animal Consciousness -
20 Brains and Symbols -
21 Thermodynamics and Thought -
22 “I Know Who You Are; I Know Where You Live” -
23 Cultural Networks - Bibliography
-
Appendix A: Major Groups of Living Organisms -
Appendix B: The International Geological Time Scale (Time-Rock Divisions) - Glossary
- About the Authors
- Index
- [UNTITLED]