Aquaporins are a family of membrane proteins that selectively conduct water molecules in and out of the cell, while at the same time preventing the passage of ions and other solutes. They can be found in animal, bacteria, and plant cells. So far 13 Aquaporins have been discovered (AQP0-AQP12) some of the Aquaporins only transport water molecules, such as AQP1, AQP2, AQP4, AQP5 and AQP8. Aquaporins that transport water and other solutes are called aquaglyceroporins, these can transport glycerol,…
cut after aspartic acid residues. Several of these enzymes, like caspase 3 and caspase 7, are responsible for many of the effects of apoptosis. These effects include cell shrinkage, PS externalization, and membrane microvesiculation 2-5. Cytochrome C, a component of the electron transport chain, is normally located in mitochondrial intermembrane space, and its release into the cytosol is generally the earliest and most critical initiating factor for mitochondrial mediated apoptosis 6-7.…
phospholipids and proteins. The mitochondria has an outer membrane which is smooth and composed of equal amounts of phospholipids and proteins. It has a large number of special proteins known as the porins. The porins are integral membrane proteins and they allow the movement of molecules that are of 5000 daltons or less in weight to pass through it. The outer membrane is freely permeable to nutrient…
Biology Matching Terms DNA- is the replication of your parents and ancestors genes RNA- is the transcription of dna, ribonucleic acid; guides protein synthesis. Translation- process in which RNA is synthesized from the template DNA. Transcription- process in which RNA attaches to the ribosome and a protein is assembled. Replication- method of DNA replication in which parental strands separate, act as templates, and produce molecules of DNA with one parental DNA strand and one new DNA strand.…
The predicted results support the stated hypothesis. As we increase the concentration of Fernaldia in the group of neurons, we can find a decrease in the concentration of neurotransmitters in the vesicles and a decrease and an increase in the concentration of degraded neurotransmitter components in the cytosol. This supports the statement that there are fewer neurotransmitters in the synaptic cleft since there are fewer neurotransmitters in the synaptic vesicles. Alternative hypothesis:…
this regard, it has been demonstrated that the serum level of IL-8 in HSP group was significantly higher than controls,9,15 and this in part contributed to leucocytosis and PMNs infiltration around vessels in HSP.9 Furthermore, CAAT/enhancer binding protein β preferentially binds in the presence of the IL-8 gene +781T allele, which can promote IL-8 gene transcription and regulation.29,36 Thus, we speculate that individuals…
Discussion Alu is a transposable element that can be inserted into the human genome, enabling its use as genetic marker for ancestry differentiation,and thus identification. Due to new insertions, some humans do not have an alu insertions, while others may have accumulated mutations causing three types of polymorphisms, S1, S2 and L, the reference alu insertion, YB8 was useful as a standard to the comparison of nucleotide sequences changes to uncover the difference in the presence and absence of…
domain (C6) represented in Figure 6B. Then it follows the TM, which is located in the membrane of the muscle fiber, the JM and the tyrosine kinase catalytic domain. MuSK is activated trough the large heparansulfate proteoglycan agrin, a motor neuron protein. But agrin does not directly bind to the receptor tyrosine kinase MuSK, MuSK’s coreceptor Lrp4 binds first to agrin and this complex…
According to Simon (2002) the silica gel is the most widely used absorbent and it is the stationary phase that is dominant in Thin layer chromatography, particles or molecules that are non-polar travel faster at the stationary phase and the molecules that are polar spend more time at the stationary phase and therefore this means that molecules that are non-polar travel larger distance on the TLC plate in comparison to molecules that are polar since the polar molecules stick to the polar…
Plant cells are eukaryotic cells, or cells with a membrane-bound nucleus. Unlike prokaryotic cells, the DNA in a plant cell is housed within the nucleus. In addition to having a nucleus, plant cells also contain other membrane-bound organelles, or tiny cellular structures, that carry out specific functions necessary for normal cellular operation. Organelles have a wide range of responsibilities that include everything from producing hormones and enzymes to providing energy for a plant cell.…