Mitochondria contain their own genome, and they transcribe it. Since mitochondria are of bacterial origin, one would expect that their polimerase would be similar to that of bacteria. And it is so the case for chloroplasts, which are also of bacterial origin.However, mitochondrial polymerase not homologous to that of bacteria, or, for that matter, to cytosolic eukariotic polymerases. It is homologous to... polymerases of T phages, T3 and T7!However, it is slightly modified. It has an extension ........ Read more »
Masters BS, Stohl LL, & Clayton DA. (1987) Yeast mitochondrial RNA polymerase is homologous to those encoded by bacteriophages T3 and T7. Cell, 51(1), 89-99. PMID: 3308116
Rodeheffer MS, Boone BE, Bryan AC, & Shadel GS. (2001) Nam1p, a protein involved in RNA processing and translation, is coupled to transcription through an interaction with yeast mitochondrial RNA polymerase. The Journal of biological chemistry, 276(11), 8616-22. PMID: 11118450
Naithani S, Saracco SA, Butler CA, & Fox TD. (2003) Interactions among COX1, COX2, and COX3 mRNA-specific translational activator proteins on the inner surface of the mitochondrial inner membrane of Saccharomyces cerevisiae. Molecular biology of the cell, 14(1), 324-33. PMID: 12529447
Gagliardi D, Stepien PP, Temperley RJ, Lightowlers RN, & Chrzanowska-Lightowlers ZM. (2004) Messenger RNA stability in mitochondria: different means to an end. Trends in genetics : TIG, 20(6), 260-7. PMID: 15145579
What are the main change and trend drivers for international supply chains? How will future cross-border supply chains look like? This article identifies a set of foreseeable drivers of change and their predicted impact on global supply chain management for the next 20 years. ... Read more »
Hameri, A., & Hintsa, J. (2009) Assessing the drivers of change for cross-border supply chains. International Journal of Physical Distribution , 39(9), 741-761. DOI: 10.1108/09600030911008184
Photo by Sara LeeAnn Banevedes
I don't think Brian Alexander is a bad guy or a misogynist. He writes the Sexploration column for MSNBC, so sure, his job is all about selling sex stories to the public. He even wrote a book about American sexuality. But I don't personally think he has a burning hatred for women, or views them as objects placed on this Earth for the sexual satisfaction of men. However, I very easily could, given how he chose to report on a recent study published in Science about m........ Read more »
Haga S, Hattori T, Sato T, Sato K, Matsuda S, Kobayakawa R, Sakano H, Yoshihara Y, Kikusui T, & Touhara K. (2010) The male mouse pheromone ESP1 enhances female sexual receptive behaviour through a specific vomeronasal receptor. Nature, 466(7302), 118-22. PMID: 20596023
Fleming, A. (2002) Testosterone and Prolactin Are Associated with Emotional Responses to Infant Cries in New Fathers. Hormones and Behavior, 42(4), 399-413. DOI: 10.1006/hbeh.2002.1840
Storey AE, Walsh CJ, Quinton RL, & Wynne-Edwards KE. (2000) Hormonal correlates of paternal responsiveness in new and expectant fathers. Evolution and human behavior : official journal of the Human Behavior and Evolution Society, 21(2), 79-95. PMID: 10785345
Burnham, T. (2003) Men in committed, romantic relationships have lower testosterone. Hormones and Behavior, 44(2), 119-122. DOI: 10.1016/S0018-506X(03)00125-9
Zak, P., Kurzban, R., Ahmadi, S., Swerdloff, R., Park, J., Efremidze, L., Redwine, K., Morgan, K., & Matzner, W. (2009) Testosterone Administration Decreases Generosity in the Ultimatum Game. PLoS ONE, 4(12). DOI: 10.1371/journal.pone.0008330
HERMANS, E., PUTMAN, P., & VANHONK, J. (2006) Testosterone administration reduces empathetic behavior: A facial mimicry study. Psychoneuroendocrinology, 31(7), 859-866. DOI: 10.1016/j.psyneuen.2006.04.002
I’ve been more or less underground for the last 3 weeks. It has been a wonderful break (mostly) from the normally hectic pace of academic life. Thanks for all those who remain despite the recent silence. – But I’m back now with a post about a paper we’ve just had accepted in Frontiers in Ecology [...]... Read more »
Brook, B.W., Traill, L.W., & Bradshaw, C.J.A. (2006) Minimum viable population sizes and global extinction risk are unrelated. Ecology Letters, 9(4), 375-382. DOI: 10.1111/j.1461-0248.2006.00883.x
Traill, L.W., Bradshaw, C.J.A., & Brook, B.W. (2007) Minimum viable population size: A meta-analysis of 30 years of published estimates. Biological Conservation, 139(1-2), 159-166. DOI: 10.1016/j.biocon.2007.06.011
Traill, L.W., Brook, B.W., Frankham, R., & Bradshaw, C.J.A. (2010) Pragmatic population viability targets in a rapidly changing world. Biological Conservation, 143(1), 28-34. DOI: 10.1016/j.biocon.2009.09.001
Undescended testicles (Cryptorchidism) appear to be of complex origin . . . one of those cases where there are genetic and environmental components, and therefore more difficult to tease out (very unintended possible pun there). You can consider genetics, exposures to environmental estrogens and anti-androgens and the relations among risk factors. You will not be bored trying to figure this one out. Added to this mix is a previously unconsidered variable: Hybrid Cars.I teach a course called "........ Read more »
Foresta, C., Zuccarello, D., Garolla, A., & Ferlin, A. (2008) Role of Hormones, Genes, and Environment in Human Cryptorchidism. Endocrine Reviews, 29(5), 560-580. DOI: 10.1210/er.2007-0042
Author’s note: Today the finalists for the 2010 Open Laboratory anthology were announced, and I am proud to say that – for the fourth year in a row – one of my posts made it onto the list of winning entries. To celebrate, I have reposted it below.
The entire list of finalists is fantastic and [...]... Read more »
BADLANGANA, N., ADAMS, J., & MANGER, P. (2009) The giraffe ( ) cervical vertebral column: a heuristic example in understanding evolutionary processes? . Zoological Journal of the Linnean Society, 155(3), 736-757. DOI: 10.1111/j.1096-3642.2008.00458.x
Cameron EZ, & du Toit JT. (2007) Winning by a neck: tall giraffes avoid competing with shorter browsers. The American naturalist, 169(1), 130-5. PMID: 17206591
Mitchell, G., van Sittert, S., & Skinner, J. (2009) Sexual selection is not the origin of long necks in giraffes. Journal of Zoology, 278(4), 281-286. DOI: 10.1111/j.1469-7998.2009.00573.x
Simmons, R., & Altwegg, R. (2010) Necks-for-sex or competing browsers? A critique of ideas on the evolution of giraffe. Journal of Zoology, 282(1), 6-12. DOI: 10.1111/j.1469-7998.2010.00711.x
Simmons, R., & Scheepers, L. (1996) Winning by a Neck: Sexual Selection in the Evolution of Giraffe. The American Naturalist, 148(5), 771. DOI: 10.1086/285955
Well I’m back! I’m not going to pretend like you missed me but I hope your glad to see another post out of me. I did a bit of writing during my time off to build up a bit of a backlog so hopefully I can keep posting regularly for a while. Anyway, without any further ado…
Jumping Frenchmen of Maine Syndrome
Best. Disease. Name. Ever.
This disease was first observed in 1878 by the neurologist Dr. George Miller Beard, a guy I will definitely talk about again, in French-Canadians, lumberjacks........ Read more »
Howard R, & Ford R. (1992) From the jumping Frenchmen of Maine to post-traumatic stress disorder: the startle response in neuropsychiatry. Psychological medicine, 22(3), 695-707. PMID: 1410093
Listen up, women! Science has a very important message. DON'T CRY OR YOU'LL DIE ALONE. Or, at least, that's what I gather from the headlines.
"Women's tears tank men's libido!" (LA Times), "A woman's tears are biggest turn-off for men!" (The Mirror), "Stop the waterworks, ladies. Crying chicks aren't sexy!" (MSNBC), and my personal favourite, "Lonely teardrops" (Science News)... all are trumpeting a strange study publ........ Read more »
We're used to hearing that America is an exceptional nation when it comes to religion. Certainly, the hold that religion has over public life is unparalleled among wealthy nations, and most Americans readily tell pollsters that they are dutifully religious.
But it seems that American religiosity might also be exceptional for quite another reason. It turns out that the gap between what they tell pollsters and what they actually do is bigger than for any other nation.
We've known for a long time........ Read more »
Brenner, Philip S. (2011) Exceptional behavior or exceptional identity? Overreporting of church attendance in the US. Public Opinion Quarterly. info:/
NIDA touts controversial 2009 study.
After 50 years of rumor, study, and argument in the research community, the National Institute on Drug Abuse (NIDA) has come out squarely behind the assertion that marijuana use in men “may increase their risk for developing testicular cancer.”
But a problem exists. The evidence just isn’t that good. Especially if you base the conclusion on a single small study, as NIDA is apparently doing.
Writing in NIDA Notes for December, 2010, Lori Whitten high........ Read more »
Daling, J., Doody, D., Sun, X., Trabert, B., Weiss, N., Chen, C., Biggs, M., Starr, J., Dey, S., & Schwartz, S. (2009) Association of marijuana use and the incidence of testicular germ cell tumors. Cancer, 115(6), 1215-1223. DOI: 10.1002/cncr.24159
This month's Conservation Letters has a Policy Perspective on the risks of relying REDD+ funding for conservation projects. REDD+ (Reducing Emissions from Deforestation and Degradation, with the "+" standing for biodiversity and social benefits), is a mechanism for transferring funds to developing countries for forest preservation and restoration. REDD+ financing is eventually supposed to flow primarily from the private sector, and it is one of the few parts of an........ Read more »
Phelps, J., Webb, E., & Koh, L. (2010) Risky business: an uncertain future for biodiversity conservation finance through REDD . Conservation Letters. DOI: 10.1111/j.1755-263X.2010.00155.x
Conservation efforts often have an associated tradeoff, and many proposed solutions are shot down because the costs are perceived to be too high. A conservation policy that benefited a charismatic endangered species with very little cost should be popular and enthusiastically adopted. However, even though turtle excluder devices greatly reduce sea turtle mortality [...]... Read more »
Chambers, P., & Kohn, R. (2001) Environmental Barriers to Trade: The Case of Endangered Sea Turtles. Review of International Economics, 9(1), 123-132. DOI: 10.1111/1467-9396.00268
Crowder, L., Crouse, D., Heppell, S., & Martin, T. (1994) Predicting the Impact of Turtle Excluder Devices on Loggerhead Sea Turtle Populations. Ecological Applications, 4(3), 437. DOI: 10.2307/1941948
Lewison, R., Crowder, L., & Shaver, D. (2003) The Impact of Turtle Excluder Devices and Fisheries Closures on Loggerhead and Kemp's Ridley Strandings in the Western Gulf of Mexico. Conservation Biology, 17(4), 1089-1097. DOI: 10.1046/j.1523-1739.2003.02057.x
Yaninek, K. (1995) Turtle Excluder Device Regulations: Laws turtles can lie with. North Carolina Law Journal. info:/
The short YouTube clip from the movie A League of Their Own illustrates a common (but exaggerated) response to outbursts of tears in inappropriate situations. Tom Hanks is managing a womens replacement baseball during World War II. He becomes upset when one player starts to cry and shouts out a memorable line: "There's no crying in baseball". The tearful display of emotions of the new Speaker of the House John Boehner has prompted discussion of the appropriateness and meaning o........ Read more »
Parvizi J, Arciniegas DB, Bernardini GL, Hoffmann MW, Mohr JP, Rapoport MJ, Schmahmann JD, Silver JM, & Tuhrim S. (2006) Diagnosis and management of pathological laughter and crying. Mayo Clinic proceedings. Mayo Clinic, 81(11), 1482-6. PMID: 17120404
Pioro EP, Brooks BR, Cummings J, Schiffer R, Thisted RA, Wynn D, Hepner A, Kaye R, & Safety, Tolerability, and Efficacy Results Trial of AVP-923 in PBA Investigators. (2010) Dextromethorphan plus ultra low-dose quinidine reduces pseudobulbar affect. Annals of neurology, 68(5), 693-702. PMID: 20839238
This is a response to the Kaylenberg and Wrangham 2010 paper on stick-carrying chimpanzees.... Read more »
Alexander, G., & Hines, M. (2002) Sex differences in response to children's toys in nonhuman primates (Cercopithecus aethiops sabaeus). Evolution and Human Behavior, 23(6), 467-479. DOI: 10.1016/S1090-5138(02)00107-1
Hassett, J., Siebert, E., & Wallen, K. (2008) Sex differences in rhesus monkey toy preferences parallel those of children. Hormones and Behavior, 54(3), 359-364. DOI: 10.1016/j.yhbeh.2008.03.008
Kahlenberg SM, & Wrangham RW. (2010) Sex differences in chimpanzees' use of sticks as play objects resemble those of children. Current biology : CB, 20(24). PMID: 21172622
Remember the previous -gate? Not the current one with the leaking cables, but the other one with the climate scientists who got their internal communication leaked to the internet, sparking fierce debate on the possible ideological bias of climate research? That’s right: it’s time to come back to Climategate. Two of my colleagues here at the institute, Tomas Moe Skjølsvold and Marianne Ryghaug, have gone through the e-mails that were leaked and looked at what it says about the........ Read more »
Ryghaug, M., & Skjølsvold, T. (2010) The Global Warming of Climate Science: Climategate and the Construction of Scientific Facts. International Studies in the Philosophy of Science, 24(3), 287-307. DOI: 10.1080/02698595.2010.522411
Animal-based low-carb diets are linked to higher death rates, according to a recent study in the Annals of Internal Medicine. On the other hand, a vegetable-based low-carb diet was associated with a lower mortality rate, especially from cardiovascular disease. As always, … Continue reading →... Read more »
Fung TT, van Dam RM, Hankinson SE, Stampfer M, Willett WC, & Hu FB. (2010) Low-carbohydrate diets and all-cause and cause-specific mortality: two cohort studies. Annals of internal medicine, 153(5), 289-98. PMID: 20820038
Over the last 15 years, an increasing number of external shocks to the labour markets have destabilised the environmental context in which organisations operate, making employment arrangements less predictable, and resulting in an increasingly boundaryless career environment for many individuals. The authors of the present study argue that - to navigate such an environment, and to cope with its demands - individuals need to build psychological capacities, such as optimism. ... Read more »
Higgins, M., Dobrow, S., & Roloff, K. (2010) Optimism and the boundaryless career: The role of developmental relationships. Journal of Organizational Behavior, 31(5), 749-769. DOI: 10.1002/job.693
Regular readers of these pages may recall previous posts on how “mindless” eating may well be contributing to the current obesity epidemic.
It may therefore be logical to presume that increasing “mindfulness” may help modify and improve eating behaviours.
But what does it take to actually help clients become more mindful of their eating behaviours?
This interesting issue [...]... Read more »
Kristeller JL, & Wolever RQ. (2011) Mindfulness-based eating awareness training for treating binge eating disorder: the conceptual foundation. Eating disorders, 19(1), 49-61. PMID: 21181579
by Rita Handrich in The Jury Room
We’re reacting to two different PsyBlog posts at once because their posts have striking relevance to litigation strategy. As they continue their series on top forms of persuasion—they touch on caffeine and speech rate. So. Let’s take a look at how these strategies apply to litigation advocacy, because (as we’ve seen with some advertising principles [...]
Related posts:Simple Jury Persuasion: Don’t confuse argument with persuasion
Simple Jury Persuasion: The tactics of effective sal........ Read more »
Martin, P., Laing, J., Martin, R., & Mitchell, M. (2005) Caffeine, Cognition, and Persuasion: Evidence for Caffeine Increasing the Systematic Processing of Persuasive Messages. Journal of Applied Social Psychology, 35(1), 160-182. DOI: 10.1111/j.1559-1816.2005.tb02098.x
Smith, S., & Shaffer, D. (1991) Celerity and Cajolery: Rapid Speech May Promote or Inhibit Persuasion through its Impact on Message Elaboration. Personality and Social Psychology Bulletin, 17(6), 663-669. DOI: 10.1177/0146167291176009
While social network addiction is not included in the DSM IV (Diagnostic and Statistical Manual of Mental Disorders), many researchers advocated its inclusion in DSM V. As the proposed category is on the way to being left out, the argument continues.... Read more »
Karaiskos, D., Tzavellas, E., Balta, G., & Paparrigopoulos, T. (2010) P02-232 - Social network addiction : a new clinical disorder?. European Psychiatry, 855-855. DOI: 10.1016/S0924-9338(10)70846-4
YOUNG, K. (1998) Internet Addiction: The Emergence of a New Clinical Disorder. CyberPsychology , 1(3), 237-244. DOI: 10.1089/cpb.1998.1.237
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