Halobacteria

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Halobacterium salinarium - the movie

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Duration: 3:12
Updated: 30 Apr 2012

A look at how the bacterium utilizes a photosynthetic process to create a proton gradient across its plasma membrane

http://wn.com/Halobacterium_salinarium_the_movie

Definición de halobacteria

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Duration: 0:33
Updated: 16 Sep 2012

Puedes descargar este programa gratuitamente en http://www.semantix.com/es_es/nuevo-dixio-desktop/ halobacteria, diccionario, definición, significado, español, castellano, dixio

http://wn.com/Definición_de_halobacteria

How to Pronounce Halobacteria

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Duration: 0:13
Updated: 26 Dec 2012

Learn how to say Halobacteria correctly with EmmaSaying's "how do you pronounce" free tutorials. http://www.emmasaying.com

http://wn.com/How_to_Pronounce_Halobacteria

Bacteria Share Light Spectrum with Plant Leaves

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Duration: 0:51
Updated: 07 Dec 2011

http://www.icr.org/article/6502/ Real Science: The proteins from halobacteria include bacteriorhodopsin and archaerhodopsin, which are light-driven proton pumps; halorhodopsin, a light-driven chloride pump; and sensory rhodopsin, which mediates both photoattractant (in the red) and photophobic (in the ultra-violet) responses. Proteins from other bacteria include proteorhodopsin. An integral membrane protein (IMP) is a protein molecule (or assembly of proteins) that is permanently attached to the biological membrane. Proteins that cross the membrane are surrounded by "annular" lipids, which are defined as lipids that are in direct contact with a membrane protein. Such proteins can be separated from the biological membranes only using detergents, nonpolar solvents, or sometimes denaturing agents. http://en.wikipedia.org/wiki/Integral_membrane_protein A proton pump is an integral membrane protein that is capable of moving protons across a cell membrane, mitochondrion, or other organelle. Mechanisms are based on conformational changes of the protein structure or on the Q cycle. http://en.wikipedia.org/wiki/Proton_pump A biological membrane or biomembrane is an enclosing or separating membrane that acts as a selective barrier, within or around a cell. It consists of a lipid bilayer with embedded proteins that may constitute close to 50% of membrane content.[1] http://en.wikipedia.org/wiki/Biological_membrane A semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane, is a membrane that will allow certain molecules or ions to pass through it by diffusion and occasionally specialized "facilitated diffusion". http://en.wikipedia.org/wiki/Selective_permeability

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How to Pronounce Haloacetamides

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Duration: 0:13
Updated: 26 Dec 2012

Learn how to say Haloacetamides correctly with EmmaSaying's "how do you pronounce" free tutorials. http://www.emmasaying.com

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How to Pronounce Haloanaerobium

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Duration: 0:13
Updated: 26 Dec 2012

Learn how to say Haloanaerobium correctly with EmmaSaying's "how do you pronounce" free tutorials. http://www.emmasaying.com

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ID Creationism and Bacterial Chemotaxis

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Duration: 7:47
Updated: 23 Sep 2011

Jonathan M's challenge can be found here: http://www.evolutionnews.org/2011/09/engineering_at_its_finest_bact050911.html And it is answered here: http://www.ncbi.nlm.nih.gov/pubmed?term=evolution%20bacterial%20chemotaxis 1. BMC Evol Biol. 2011 Aug 16;11(1):240. "Our findings explain several results from diverse bacteria and lead to testable predictions regarding chemotaxis responses evolved in bacteria living under different biophysical constraints and with specific motility machinery. Further, they shed light on the potential evolutionary paths for the evolution of complex behaviours from simpler ones in incremental fashion." 2. Appl Environ Microbiol. 2011 Jun;77(12):4105-18. "Five batch cultures of Bacillus subtilis were subjected to evolution in the laboratory for 6,000 generations under conditions repressing sporulation in complex liquid medium containing glucose. Between generations 1,000 and 2,000, variants with a distinct small-colony morphology arose and swept through four of the five populations that had been previously noted for their loss of sporulation " [SERIOUSLY!] 3. BMC Genomics. 2010 Oct 20;11:588. "Properties described by gene ontology terms identified in the overrepresentation analysis are often consistent with individual prokaryote lifestyles and are likely to give a competitive advantage to the organism." 4. Adv Appl Microbiol. 2009;66:53-75. "The analysis of complete genome sequences from microorganisms that occupy diverse ecological niches reveal the presence of multiple chemotaxis pathways and a great diversity of chemoreceptors with novel sensory specificities." 5. Proc Natl Acad Sci U S A. 2010 Jan 26;107(4):1391-6. "We show that the maximin response is the unique one that always outcompetes motile but nonchemotactic bacteria. The maximin strategy is adapted to the variable environments experienced by bacteria, and we explicitly show its emergence in simulations of bacterial populations in a chemostat. Finally, we recast the contrast of evolution in regular vs. complex environments in terms of minimax vs. maximin game-theoretical strategies. Our results are generally relevant to biological optimization principles and provide a systematic possibility to get around the need to know precisely the statistics of environmental fluctuations." 6. BMC Microbiol. 2009 Mar 16;9:56. "Deletion of the second DUF439 protein had only minimal effects. HEAT_PBS proteins could be identified in the chemotaxis gene regions of all motile haloarchaea sequenced so far, but not in those of other archaeal species. Genes coding for DUF439 proteins, however, were found to be integral parts of chemotaxis gene regions across the archaeal domain, and they were not detected in other genomic context." 7. Mol Microbiol. 2008 Dec;70(5):1054-61. "Class II CheCs likely function as phosphatases in systems other than chemotaxis. Class III CheCs are found in the archaeal class Halobacteria and might function as class I CheCs. FliY is the main phosphatase in the B. subtilis chemotaxis system. CheX is quite divergent from the rest of the family, forms a dimer and some may function outside chemotaxis. A model for the evolution of the family is discussed." 8. Proc Natl Acad Sci U S A. 2008 May 27;105(21):7500-5. "Despite their complexity, the networks must be evolvable because of changing ecological and environmental pressures. Although the regulatory networks underlying stress responses are characterized extensively, their mechanism of evolution remains poorly understood. Here, we examine the evolution of three candidate stress response networks (chemotaxis, competence for DNA uptake, and endospore formation) by analyzing their phylogenetic distribution across several hundred diverse bacterial and archaeal lineages. We report that genes in the chemotaxis and sporulation networks group into well defined evolutionary modules with distinct functions, phenotypes, and substitution rates as compared with control sets of randomly chosen genes. The evolutionary modules vary in both number and cohesiveness among the three pathways. Chemotaxis has five coherent modules whose distribution among species shows a clear pattern of interdependence and rewiring."

http://wn.com/ID_Creationism_and_Bacterial_Chemotaxis

How to Pronounce Haloalkanes

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Duration: 0:13
Updated: 26 Dec 2012

Learn how to say Haloalkanes correctly with EmmaSaying's "how do you pronounce" free tutorials. http://www.emmasaying.com

http://wn.com/How_to_Pronounce_Haloalkanes

Pink lake (Hiller Lake )

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Duration: 1:04
Updated: 17 Nov 2012

Then there is the mysterious bright pink Lake Hiller in Western Australia. Its startling colour remains a mystery and while scientists have proven it's not due to the presence of algae, unlike the other salt lakes down under, they still can't explain why it's pink. Join us on Twitter : https://twitter.com/dyk_official Join us on G+ : https://plus.google.com/106223965383290201748/ join us on FB : https://www.facebook.com/infofacts Intro : (RavenProDesign)

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Bacteriorhodopsin

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Duration: 2:03
Updated: 21 Apr 2009

http://www.garlandscience.com/product/isbn/9780815341055 This video describes the form and function of the proton pump Bacteriorhodopsin. This video is from: Essential Cell Biology, 3rd Edition Alberts, Bray, Hopkin, Johnson, Lewis, Raff, Roberts, & Walter ISBN: 978-0-8153-4129-1

http://wn.com/Bacteriorhodopsin

photo: US DoD / Erin A. Kirk-Cuomo

Defense Secretary Chuck Hagel and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff (not pictured), brief the press at the Pentagon, April 10, 2013.

US 'prepared' to deal with North Korea action

Al Jazeera

11 Apr 2013

The US is ready to defend itself against anything North Korea might launch, Defence Secretary Chuck Hagel said, as its ally South Korea confirmed its ability to intercept the North's missiles. At a Pentagon briefing on Wednesday, Hagel told reporters that the US "is fully prepared to deal with any contingency, any action that North Korea may take or any provocation that they may instigate," Hagel added ... 423 Source .. Agencies ... News ... ....(size: 7.3Kb)

photo: AP / Korea POOL

South Korea raises alert level, as North Korea readies missile test

The Times of India

10 Apr 2013

SEOUL. South Korea raised its military watch alert to "vital threat" today ahead of an expected North Korean missile launch, as UN chief Ban Ki-moon warned the Korean peninsula may be slipping out of control. South Korean intelligence says the North had prepared two mid-range missiles for imminent launch from its east coast, despite warnings from ally China to avoid provocative moves at a time of soaring military tensions ... ....(size: 2.4Kb)

photo: AP / Andy Wong

A North Korean female soldier, right, looks back as she and another patrol on a pathway along the bank of the Yalu River, the China-North Korea border river, near North Korea's town of Sinuiju, opposite to the Chinese border city of Dandong, Sunday Nov. 28, 2010.

Korea crisis high on agenda at London G8 talks

BBC News

11 Apr 2013

The Korean crisis will be high on the agenda when foreign ministers from the G8 group of nations hold talks in London on Thursday. Correspondents say Japan, present at the talks, is looking for a strong statement of solidarity over the issue. North Korea has been making bellicose threats against South Korea, Japan and US bases in the region ... Syria division ... Burma, Somalia and cyber-security are also topics on the agenda ... ....(size: 3.0Kb)

photo: AP / Sunday Alamba

File - Nigeria troops man a checkpoint in Maiduguri, Nigeria, Wednesday, Sept, 28. 2011. Security forces have arrested a commander of a radical Muslim sect known as Boko Haram, who allegedly ordered various sectarian killings in the northeastern city.

Nigeria's Boko Haram rejects Jonathan's amnesty idea

BBC News

11 Apr 2013

The Nigerian Islamist group Boko Haram has rejected the idea of an amnesty. Last week President Goodluck Jonathan asked a high level team to look into the possibility of granting the militants a pardon. The announcement was made via an audio statement believed to be from the group's leader Abubakar Shekau ... Continue reading the main story Boko Haram at a glance ... ....(size: 2.4Kb)

photo: AP / Mohammad Hannon

In this Monday, Jan. 28, 2013 file photo, newly arrived Syrian refugees wait for their turn to receive a mattress, blankets and other supplies, and to be assigned to tents, at the Zaatari Syrian refugees camp in Mafraq, near the Syrian border with Jordan.

Syria's Other- and Self-Inflicted Genocide

WorldNews.com

10 Apr 2013

Article by WN.com Correspondent Dallas Darling. The 2.5 million Syrians who have recently fled a brutal external and internal civil war, along with the estimated 70,000 who have been killed, is reminiscent of the Assyrian Genocide that occurred during World War One ... Assyrian Christians were especially targeted, including the unarmed and defenseless ... Syria continued to request that Israel, America's arch-ally, return the Golan Heights....(size: 4.2Kb)

Dreams, Dust and Birds: The Trashing of Owens Lake

Design Observer

24 Jan 2011

Construction of the Jawbone siphon of the Los Angeles Aqueduct, 1912. [courtesy of the Joseph Barlow Lippincott collection, UC Berkeley Water Resources Center Archives]. Manufacturing Dust. The dry bed of what was once Owens Lake contains the detritus of Los Angeles’s fantasies ... [1] It was a monumental act of engineering ... But they lost ... The L.A ... Halobacteria tints the salt crust of a dust control pond on the Owens Lake playa ... And more....(size: 22.1Kb)

Halobacteria

Halobacterium sp. strain NRC-1, each cell about 5 µm in length.
Scientific classification
Domain:	Archaea
Kingdom:	Euryarchaeota
Phylum:	Euryarchaeota
Class:	Halobacteria
Order
Halobacteriales
Synonyms
Halobacteria Grant et al. 2002

This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Halobacteria

This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.

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Contents

Taxonomy [link]

References [link]

Further reading [link]

Scientific journals [link]

Scientific books [link]

Scientific databases [link]

External links [link]

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