Navigation Links
Intermembrane space


The intermembrane space is the region between the inner membrane and the outer membrane of a mitochondrion or a chloroplast. Its main function is nucleotide phosphorylation . Channel proteins called porins in the outer membrane allow free movement of ions and small molecules into the intermembrane space. This means that it is essentially continuous with the cytosol in terms of solutes relevent for the functioning of these organelles. Enzymes destined for the mitochondrial matrix or the stroma can bypass the intermembrane space via transport through translocases . These are known as TOM and TIM in mitochondria and TOC and TIC in chloroplasts. It tends to have a low pH because of the proton gradient which results when protons are pumped from the mitochondrial matrix into the intermembrane space during electron transport. The structures responsible for this are coenzyme q , complex I , complex II , and complex III .


'"/>


(Date:4/17/2014)... in the Cell Press journal Current Biology ... rather novel sex lives. The Brazilian insects, which represent ... Neotrogla , are the first example of an animal ... been identified in several different animals, Neotrogla ... is also reversed," says Kazunori Yoshizawa from Hokkaido University ...
(Date:4/17/2014)... Medical Branch at Galveston are the first to ... cervical cancer should begin colorectal cancer screening earlier ... finding a high incidence of secondary colorectal cancers ... new recommendations that the younger women in this ... after their initial cervical cancer diagnosis instead of ...
(Date:4/17/2014)... researchers, led by the Australian National University (ANU), ... changes and deep-sea temperature variability over the past ... better understand the climate surrounding ice ages over ... determine the relationship between carbon dioxide levels, global ... the University of Southampton (UoS) and the National ...
Breaking Biology News(10 mins):In sex-reversed cave insects, females have the penises 2Radiation therapy for cervical cancer increases risk for colorectal cancer 2Ancient sea-levels give new clues on ice ages 2
... Western Europe,s largest lakes, Lake Geneva, in large enough quantities ... that these small bits of plastic can be harmful to ... waterborne organisms, the full extent of their consequences in lakes ... is being extending under a mandate by the Swiss Federal ...
... paper published in the Journal of Animal Science ... when including distillers dried grains with solubles (DDGS). Some ... the fat-softening effects of DDGS. Firmer fat means longer-lasting ... found that including saturated fats in DDGS diets makes ...
... to threaten common ash trees across Europe, new research in ... impact of forest diseases to discover if diseases played a ... large-scale pathogen outbreaks were much more infrequent in the past, ... locations, such as the international seed trade, is a major ...
Cached Biology News:Microplastic pollution prevalent in lakes too 2Microplastic pollution prevalent in lakes too 3Saturated fats do not yield better bacon 2
Other biology definitionOther Tags