endoplasmic reticulum

Cell wall: Cell (biology), Cell membrane, Endomembrane system, Cell nucleus, Endoplasmic reticulum, Golgi apparatus, Peroxisome, Parenthesome, Granule (cell biology), Vesicle (biology)
$82.00
A cell wall is a tough, flexible and sometimes fairly rigid layer that surrounds some types of cells. It is located outside the cell membrane and provides these cells with structural support and protection, and also acts as a filtering mechanism. A major function of the cell wall is to act as a pressure vessel, preventing over-expansion when water enters the cell. They are found in plants, bacteria, fungi, algae, and some archaea. Animals and protozoa do not have cell walls.

Coordination of Endoplasmic Reticulum and mRNA Localization to the Yeast Bud [A short communication from: Current Biology
$7.95
This digital document is a journal article from Current Biology, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Abstract:
Localization of messenger RNAs and local protein synthesis contribute to asymmetric protein distribution not only of cytoplasmic but also of membrane or secreted proteins [1, 2]. Since synthesis of the latter protein classes occurs at the rough endoplasmic reticulum (ER), mRNA localization and distribution of ER should be coordinated. However, this coordination is not yet understood. In yeast, mRNA localization to the growing bud depends on the myosin Myo4p, its adaptor She3p, and the specific RNA binding protein She2p [3]. These proteins mediate the localization of 23 mRNAs including ASH1 mRNA and mRNAs encoding membrane proteins [4]. In addition, Myo4p and She3p are required for segregation of cortical ER to the bud [5]. Here we show, with ASH1 mRNA as a model mRNA, that localizing messenger ribonucleoprotein (mRNP) particles comigrate with tubular ER structures to the bud, which requires the RNA binding protein She2p. Coordinated movement of the ASH1 mRNP with ER tubules but not their association with each other depends on Myo4p and She3p. Subcellular fractionation experiments demonstrate a cosegregation of ER and She2p, which is independent of Myo4p, She3p, or polysomes. Our findings suggest a novel model for mRNA localization that involves association of She2p and mRNPs with ER tubules and myosin-dependent cotransport of tubules and localized mRNPs.

The Plant Endoplasmic Reticulum (Plant Cell Monographs)
$229.00
The endoplasmic reticulum (ER), called "the mother of all membranes," is spotlighted in this timely new book. The work presented here is especially exciting since GFP-technology has provided new ways of looking at the dynamics of the ER and its relationship to other organelles, particularly the Golgi apparatus and peroxisomes. This book provides in-depth knowledge of the ER and the diverse roles it plays - for instance, in protein trafficking, homeostasis of cellular calcium, plant hormones, and lipid synthesis. These manifold activities are reflected in the great plasticity of the ER as a structure, with more than a dozen specialized domains recognized for this organelle.

Dislocation and Degradation of Proteins from the Endoplasmic Reticulum (Current Topics in Microbiology and Immunology)
$129.00
The present volume of Current Topics in Microbiology and Immunology contains seven chapters that illuminate various aspects of a protein's genesis and terminal fate in the endoplasmic reticulum (ER). This area is of immediate medical relevance since the malfunctioning of proper quality control during protein synthesis, and the lack of sufficient degradation of improper proteins from the ER forms the basis of many human diseases. The study of viruses and bacteria has significantly contributed to the understanding of the processes going on at the ER membrane, which is illustrated in several chapters of the volume. The field of protein degradation from the ER touches upon many other fields of cell biology, such as immunology, pathology, microbiology, and embryology