Linked Life Data

15607740

Source:http://linkedlifedata.com/resource/pubmed/id/15607740

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2004-12-20
pubmed:abstractText
In this study we have generated a EYFP targeted to the mitochondrial intermembrane space (MIMS-EYFP) to determine for the first time the pH within this compartment. The fragment encoding HAI-tagged EYFP was fused with the C-terminus of glycerol-phosphate dehydrogenase, an integral protein of the inner mitochondrial membrane. Human ECV304 cells transiently transfected with MIMS-EYFP showed the typical mitochondrial network, co-localized with MitoTracker Red. Following the calibration procedure, an estimation of the pH value in the intermembrane space was obtained. This value (6.88+/-0.09) was significantly lower than that determined in the cytosol after transfection with a cytosolic EYFP (7.59+/-0.01). Further, the pH of the mitochondrial matrix, determined with a EYFP targeted to this subcompartment, was 0.9 pH units higher than that in the intermembrane space. In conclusion, MIMS-EYFP represents a novel powerful tool to monitor pH changes in the mitochondrial intermembrane space of live cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
28
pubmed:volume
326
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
799-804
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
pH difference across the outer mitochondrial membrane measured with a green fluorescent protein mutant.
pubmed:affiliation
Department of Biology, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy. porcelli@alma.unibo.it
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't