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OTS 44 is a free-floating planetary-mass object or brown dwarf located at 550 light-years (170 pc) in the constellation Chamaeleon near the reflection nebula IC 2631. It is among the lowest-mass free-floating substellar objects, with approximately 11.5 times the mass of Jupiter, or approximately 1.1% that of the Sun. Its radius is not very well known and is estimated to be 23–57% that of the Sun.
Meltwater pulse 1A (MWP1a) is the name used by Quaternary geologists, paleoclimatologists, and oceanographers for a period of rapid post-glacial sea level rise, between 13,500 and 14,700 years ago, during which global sea level rose between 16 meters (52 ft) and 25 meters (82 ft) in about 400–500 years, giving mean rates of roughly 40–60 mm (0.13–0.20 ft)/yr. Meltwater pulse 1A is also known as catastrophic rise event 1 (CRE1) in the Caribbean Sea. The rates of sea level rise associated with meltwater pulse 1A are the highest known rates of post-glacial, eustatic sea level rise. Meltwater pulse 1A is also the most widely recognized and least disputed of the named, postglacial meltwater pulses. Other named, postglacial meltwater pulses are known most commonly as meltwater pulse 1A0, meltwater pulse 1B, meltwater pulse 1C, meltwater pulse 1D, and meltwater pulse 2. It and these other periods of rapid sea level rise are known as meltwater pulses because the inferred cause of them was the rapid release of meltwater into the oceans from the collapse of continental ice sheets.
Amastatin, also known as 3-amino-2-hydroxy-5-methylhexanoyl-L-valyl-L-valyl-L-aspartic acid, is a naturally occurring, competitive and reversible aminopeptidase inhibitor that was isolated from Streptomyces sp. ME 98-M3. It specifically inhibits leucyl aminopeptidase, alanyl aminopeptidase, bacterial leucyl aminopeptidase, leucyl/cystinyl aminopeptidase (oxytocinase/vasopressinase), and, to a lesser extent, glutamyl aminopeptidase, as well as other aminopeptidases. It does not inhibit arginyl aminopeptidase. Amastatin has been found to potentiate the central nervous system effects of oxytocin and vasopressin in vivo. It also inhibits the degradation of met-enkephalin, dynorphin A, and other endogenous peptides.
Streptomyces griseoaurantiacus is a thermotolerant bacterium species from the genus of Streptomyces which was isolated from marine sediment. Streptomyces griseoaurantiacus produces the antibiotics manumycin, diperamycin and chinikomycin, and griseolic acid.
Massilia yuzhufengensis is a Gram-negative, rod-shaped, aerobic and motile bacterium from the genus Massilia with a polar flagella which has been isolated from the Yuzhufeng Glacier from the Tibetan Plateau in China.
Blastomonas is a Gram-negative, photoheterotrophic, strictly aerobic and non-spore-forming bacteria genus from the family of Sphingomonadaceae.
Anseongella is a genus from the family of Sphingobacteriaceae.
Arcticibacter pallidicorallinus is a Gram-negative and rod-shaped bacterium from the genus of Arcticibacter which has been isolated from glacier ice from a glacier in Xinjiang in China.
Arcticibacter svalbardensis is a Gram-negative, rod-shaped and non-motile bacterium from the genus of Arcticibacter which has been isolated from surface soil from Ny-Ålesund on Svalbard.
Dyadobacter tibetensis is a Gram-negative, aerobic, rod-shaped and non-motile bacterium from the genus of Dyadobacter which has been isolated from a glacial ice core from the Tibetan Plateau in China.
Massilia eurypsychrophila is a Gram-negative, aerobic, rod-shaped and facultatively psychrophilic bacterium from the genus Massilia with a polar flagella which has been isolated from the ice core of the Muztagh Glacier in Xinjiang in China.
Psychrobacter glaciei is a Gram-negative, non-spore-forming and non-motile bacterium of the genus Psychrobacter which has been isolated from the ice core of an arctic glacier from Austre Lovénbreen in Svalbard.
Hymenobacter glacieicola is a Gram-negative, rod-shaped and non-motile bacterium from the genus of Hymenobacter which has been isolated from glacier ice from the Muztagh Glacier from the Tibetan Plateau in China.
Thalassotalea is an aerobic and chemo-organo-heterotrophic genus of bacteria from the family Colwelliaceae which occur in the ocean and in sea ice.
Aurantiacibacter arachoides is a Gram-negative and rod-shaped bacteria from the genus Aurantiacibacter which has been isolated from the ice core of the East Rongbuk Glacier from the Tibetan Plateau.
Hymenobacter frigidus is a Gram-negative, psychrophilic and rod-shaped bacterium from the genus of Hymenobacter which has been isolated from the ice core of the Muztagh Glacier from the Tibetan Plateau.
Aureimonas glaciei is a Gram-negative, aerobic, short rod-shaped and motile bacteria from the genus of Aurantimonas which has been isolated from the Muztagh Glacier in China.
Cryobacterium flavum is a Gram-positive and rod-shaped bacterium from the genus of Cryobacterium which has been isolated from glacier ice from Xinjiang in China.
Cryobacterium levicorallinum is a psychrophilic and Gram-positive bacterium from the genus of Cryobacterium which has been isolated from glacier ice from Xinjiang in China.
Cryobacterium luteum is a Gram-positive and rod-shaped bacterium from the genus of Cryobacterium which has been isolated from glacier ice from a glacier from the Xinjiang Uyghur Autonomous Region in China.
References
- 1 2 Parte, A.C. "Arcticibacter". LPSN .
- 1 2 "Arcticibacter eurypsychrophilus". www.uniprot.org.
- ↑ Shen, L.; Liu, Y.; Gu, Z.; Yao, T.; Xu, B.; Wang, N.; Jiao, N.; Liu, H.; Zhou, Y. (19 November 2014). "Arcticibacter eurypsychrophilus sp. nov., isolated from ice core". International Journal of Systematic and Evolutionary Microbiology. 65 (Pt 2): 639–643. doi: 10.1099/ijs.0.066365-0 . PMID 25410942.