division plane orientation in plant cells
... oriented PPBs, in elongated cells that would normally divide symmetrically and transversely (Petrásek et al. 2002; Dhonukshe et al. 2005b). Polarized auxin flow may link the plane of cell division with the polarity of cell growth, allowing for changes in growth and division patterns in response to ...
... oriented PPBs, in elongated cells that would normally divide symmetrically and transversely (Petrásek et al. 2002; Dhonukshe et al. 2005b). Polarized auxin flow may link the plane of cell division with the polarity of cell growth, allowing for changes in growth and division patterns in response to ...
the versatile bacterial type iv secretion systems
... Although it is clear that the CP coordinates with the Mpf complex to drive DNA transfer, until recently it was not known whether the CP physically interacts with the Mpf structure. Now, two studies have reported that CPs form stable interactions with homologues of the A. tumefaciens VirB10 protein35 ...
... Although it is clear that the CP coordinates with the Mpf complex to drive DNA transfer, until recently it was not known whether the CP physically interacts with the Mpf structure. Now, two studies have reported that CPs form stable interactions with homologues of the A. tumefaciens VirB10 protein35 ...
PDF + SI - Journal of Cell Science
... Intracellular trafficking and protein sorting are mediated by various protein complexes, with the retromer complex being primarily involved in retrograde traffic from the endosome or lysosome to the Golgi complex. Here, comparative genomics, cell biology and phylogenetics were used to probe the earl ...
... Intracellular trafficking and protein sorting are mediated by various protein complexes, with the retromer complex being primarily involved in retrograde traffic from the endosome or lysosome to the Golgi complex. Here, comparative genomics, cell biology and phylogenetics were used to probe the earl ...
BIOL562_Lecture_12
... discontinuous rate interspersed by brief pauses due to structural rearrangements; termination can be by 2 mechanisms; functional RNAs are synthesized as precursors & trimed & chemical modified; degradation is controlled by enzymes. Eukaryotic mRNAs are capped by 7methylguanosine at 5’ end & poly(A) ...
... discontinuous rate interspersed by brief pauses due to structural rearrangements; termination can be by 2 mechanisms; functional RNAs are synthesized as precursors & trimed & chemical modified; degradation is controlled by enzymes. Eukaryotic mRNAs are capped by 7methylguanosine at 5’ end & poly(A) ...
What does cell division do for an organism
... In aerobic respiration what must cells have a supply of to release the energy from the food? ...
... In aerobic respiration what must cells have a supply of to release the energy from the food? ...
1. Describe the steps of the scientific method. 2. Define the terms
... Polar molecules like water have partially charged atoms at their ends Hydrogen bonds form when partial opposite charges in different molecules attract each other The partially positive hydrogens of one water molecule are attracted to the partially negative oxygen on another ...
... Polar molecules like water have partially charged atoms at their ends Hydrogen bonds form when partial opposite charges in different molecules attract each other The partially positive hydrogens of one water molecule are attracted to the partially negative oxygen on another ...
Medical Neuroscience
... Terminate in synaptic boutons = neurotransmitter & neurosecretion * pyramidal neuron = cerebral cortex 2. Neuronal metabolic demand Require glucose and O2 Numerous organelles = high biosynthetic activity Maintenance of processes and neurotransmitter synthesis Prominent ribosomes and rER (Nissl bodie ...
... Terminate in synaptic boutons = neurotransmitter & neurosecretion * pyramidal neuron = cerebral cortex 2. Neuronal metabolic demand Require glucose and O2 Numerous organelles = high biosynthetic activity Maintenance of processes and neurotransmitter synthesis Prominent ribosomes and rER (Nissl bodie ...
PTA 198 Anatomy and Physiology
... 6. Be able to identify/locate the following arteries and veins. Also be able to explain/describe blood flow patterns. (Remember you must label all vessels as left or right) a. Major Arteries: Superficial Temporal, Maxillary, Facial, Occipital, Internal Carotid, External Carotid, Vertebral, Common Ca ...
... 6. Be able to identify/locate the following arteries and veins. Also be able to explain/describe blood flow patterns. (Remember you must label all vessels as left or right) a. Major Arteries: Superficial Temporal, Maxillary, Facial, Occipital, Internal Carotid, External Carotid, Vertebral, Common Ca ...
Protein Prenylation: Genes, Enzymes, Targets, and Functions
... Manyspecific proteins are posttranslationally modifiedwith prenyl groups. Most, if not all, prenylated proteins are modifiedby the attachmentof either a 15-carbonfarnesyl or a 20-carbon geranylgeranylgroup (117) in a thioether linkage to a cysteine residue. In most organisms, geranylgeranylation is ...
... Manyspecific proteins are posttranslationally modifiedwith prenyl groups. Most, if not all, prenylated proteins are modifiedby the attachmentof either a 15-carbonfarnesyl or a 20-carbon geranylgeranylgroup (117) in a thioether linkage to a cysteine residue. In most organisms, geranylgeranylation is ...
Membrane vesicle-mediated release of bacterial
... OMVs mimicking eukaryotic exosomes and highlight a need to evaluate the potential role of RNAcontaining bacterial membrane vesicles in bacteria-host interactions. ...
... OMVs mimicking eukaryotic exosomes and highlight a need to evaluate the potential role of RNAcontaining bacterial membrane vesicles in bacteria-host interactions. ...
2015 – PKc-theta is a novel sc35 splicing factor regulator in
... single gene (1). Pre-mRNA splicing takes place within the spliceosome, a ribonucleoprotein complex enriched in pre-mRNA splicing machinery including small nuclear ribonucleoproteins (snRNPs), spliceosome subunits, non-snRNP splicing factors, and a plethora of unknown mRNA-regulating nuclear factors ...
... single gene (1). Pre-mRNA splicing takes place within the spliceosome, a ribonucleoprotein complex enriched in pre-mRNA splicing machinery including small nuclear ribonucleoproteins (snRNPs), spliceosome subunits, non-snRNP splicing factors, and a plethora of unknown mRNA-regulating nuclear factors ...
Pdf - Text of NPTEL IIT Video Lectures
... Now, if we see that gram positive and gram negative bacteria. Now, I have already told you that, gram negative bacteria has got pilin, pili. The pilin proteins are there; pili is present in gram negative bacteria. What is gram positive and what is gram negative bacteria? Now, this is a particular te ...
... Now, if we see that gram positive and gram negative bacteria. Now, I have already told you that, gram negative bacteria has got pilin, pili. The pilin proteins are there; pili is present in gram negative bacteria. What is gram positive and what is gram negative bacteria? Now, this is a particular te ...
Regulation of the subcellular distribution of key cellular RNA
... kinase 1 (SRPK1) phosphorylates serine/arginine-rich proteins, necessary for pre-spliceosome commitment. It was found that HCMV infection progressively increased the abundance of cytoplasmic SRPK1, which is regulated by subcellular partitioning. The essential polyadenylation factor CstF-64 was simil ...
... kinase 1 (SRPK1) phosphorylates serine/arginine-rich proteins, necessary for pre-spliceosome commitment. It was found that HCMV infection progressively increased the abundance of cytoplasmic SRPK1, which is regulated by subcellular partitioning. The essential polyadenylation factor CstF-64 was simil ...
Domain conservation in several volvocalean cell wall - UvA-DARE
... Kieliszewski and Lamport [25] suggested that we instead focus on the similarity of the H R G P s because they appear to belong to a common superfamily. If this is the case, it should be possible to trace the evolutionary origin of all H R G P s to a small number of archetypal peptide domains. To dat ...
... Kieliszewski and Lamport [25] suggested that we instead focus on the similarity of the H R G P s because they appear to belong to a common superfamily. If this is the case, it should be possible to trace the evolutionary origin of all H R G P s to a small number of archetypal peptide domains. To dat ...
Structure and Function of the Plasma Membrane A biochemical
... themselves the fundamental units of both structure and function (4, 5) (Fig. 2). This approach has the appeal of shifting the emphasis from the lipids to the proteins, which are the usual, but not exclusive, biological mechanism for specificity and versatility. It has the additional attraction of re ...
... themselves the fundamental units of both structure and function (4, 5) (Fig. 2). This approach has the appeal of shifting the emphasis from the lipids to the proteins, which are the usual, but not exclusive, biological mechanism for specificity and versatility. It has the additional attraction of re ...
A mitochondrial specific stress response in mammalian cells
... which the carbamyl phosphate-binding domain (amino acids 30±114 of mature OTC) has been removed. (B) OTC and OTC-D are imported into mitochondria in vivo. COS-7 cells transfected with OTC (lanes 1 and 2) or OTC-D (lanes 3 and 4) were labelled with [35S]methionine 36 h after transfection in the prese ...
... which the carbamyl phosphate-binding domain (amino acids 30±114 of mature OTC) has been removed. (B) OTC and OTC-D are imported into mitochondria in vivo. COS-7 cells transfected with OTC (lanes 1 and 2) or OTC-D (lanes 3 and 4) were labelled with [35S]methionine 36 h after transfection in the prese ...
Cell Type–Specific Chromatin Decondensation of a
... unknown. It is possible that this process could be mediated via zip-coded regions of the ER (Grotewold and Davies, 2008). The Genomic Region Spanning Sad1 and Sad2 Is Decondensed in the Root Epidermis We then used DNA FISH to determine whether expression of genes within the avenacin gene cluster is ...
... unknown. It is possible that this process could be mediated via zip-coded regions of the ER (Grotewold and Davies, 2008). The Genomic Region Spanning Sad1 and Sad2 Is Decondensed in the Root Epidermis We then used DNA FISH to determine whether expression of genes within the avenacin gene cluster is ...
Neurological examination
... Patient is kept 6 metres (20ft) from the chart Read as 6/5, 6/6, 6/10, 6/60 Test one eye at a time ...
... Patient is kept 6 metres (20ft) from the chart Read as 6/5, 6/6, 6/10, 6/60 Test one eye at a time ...
File - Nepal Pharmacy
... – Adhesion proteins – hold to surface, cells – Receptor proteins – receive messages – Enzymes – speed up reactions – Transport proteins (active and passive) active – require energy to transport passive – no energy required for transport presentation by: Mahendra Kandel ...
... – Adhesion proteins – hold to surface, cells – Receptor proteins – receive messages – Enzymes – speed up reactions – Transport proteins (active and passive) active – require energy to transport passive – no energy required for transport presentation by: Mahendra Kandel ...
Bio1A - Lec 6 slides File
... • Fiber network throughout the cytoplasm • Organizes cell’s structures and activities, anchoring many organelles – support the cell and maintain its shape – interacts with motor proteins to produce motility – May regulate biochemical activities ...
... • Fiber network throughout the cytoplasm • Organizes cell’s structures and activities, anchoring many organelles – support the cell and maintain its shape – interacts with motor proteins to produce motility – May regulate biochemical activities ...
Changes in the Nuclear Envelope Environment Affect
... membrane is continuous with the endoplasmic reticulum. The inner nuclear membrane is associated with a unique set of proteins, some of which mediate interactions between the nuclear envelope and chromatin (reviewed in Zhao et al. 2009). Nuclear pore complexes traverse both membranes and allow transp ...
... membrane is continuous with the endoplasmic reticulum. The inner nuclear membrane is associated with a unique set of proteins, some of which mediate interactions between the nuclear envelope and chromatin (reviewed in Zhao et al. 2009). Nuclear pore complexes traverse both membranes and allow transp ...
Cell nucleus
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nucleoskeleton (which includes nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. The interior of the nucleus does not contain any membrane-bound sub compartments, its contents are not uniform, and a number of sub-nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes. After being produced in the nucleolus, ribosomes are exported to the cytoplasm where they translate mRNA.