• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
The Putative Arabidopsis Arp2/3 Complex
The Putative Arabidopsis Arp2/3 Complex

... the leading edge of migrating animal cells (Welch et al., 1997a; Morrell et al., 1999; Schaerer-Brodbeck and Riezman, 2000a, 2000b; Higgs and Pollard, 2001). As a multifunctional organizer, the cellular roles of the Arp2/3 complex involve the control of actin polymerization nucleation for many cell ...
Vaccinia Protein F12 Has Structural Similarity to Kinesin
Vaccinia Protein F12 Has Structural Similarity to Kinesin

Early Embryogenesis in Flowering Plants: Setting Up the Basic Body
Early Embryogenesis in Flowering Plants: Setting Up the Basic Body

... the zygote (50, 51). And although imprinting is quite common in the angiosperm endosperm, only a few genes imprinted in the embryo have been reported so far (56, 90, 118). The maternal-to-zygotic transition thus appears to already commence in the zygote. In contrast to animals, however, because ther ...
Recent advances in renal tubular calcium reabsorption
Recent advances in renal tubular calcium reabsorption

... putative involvement of TRPV5. TRPV5/ mice are characterized by renal Ca2þ wasting as a result of reduced Ca2þ reabsorption in DCTs, accompanied by polyuria and reduced urinary pH [46]. Nijenhuis et al. [17] showed that chronic treatment with a relatively low dose of hydrochlorothiazide results ...
- Wiley Online Library
- Wiley Online Library

... The existence of clathrin-independent recycling of secretory vesicles has been controversial. By combining patchclamp capacitance recording, optical methods and specific molecular interventions, we dissect two types of mechanistically different endocytosis in pancreatic b cells, both of which requir ...
Sucrose Cleavage Pathways in Aspen Wood
Sucrose Cleavage Pathways in Aspen Wood

... tissues, then transported through phloem and finally incorporated into developing wood (Turgeon, 1996). In the following sections, I will introduce how sucrose is formed in the photosynthetic source tissues and transported to developing wood cells and then I will focus on sucrose hydrolysis and cell ...
Mathematical models of ion transport through cell membrane channels
Mathematical models of ion transport through cell membrane channels

... active transport realized by ion pumps or in the passive exchange transport (for example realized in the case of anions by band 3 protein in the erythrocyte membrane). Channels in excitable membranes are highly selective for univalent cations (Na+ and K+ ). Such selectivity cannot be therefore the e ...
Journal of Bacteriology
Journal of Bacteriology

... Recent literature on the antibiotics enduracidin, moenomycin, prasinomycin, and 11.837 RP suggested an interaction with murein synthesis. Incubation of sensitive strains from Bacillus cereus and Staphylococcus aureus in a "wall medium" containing labeled L-alanine showed that all four antibiotics in ...
Spindle pole body-anchored Kar3 drives the nucleus
Spindle pole body-anchored Kar3 drives the nucleus

... nuclei of the mating cells become transported toward each other in a process termed nuclear congression (Rose 1996). This involves specific regulation of MTs at the yeast centrosome, the spindle pole body (SPB). This matingspecific function of the SPB is initiated by mating signaling processes and l ...
Balancing mitochondrial biogenesis and
Balancing mitochondrial biogenesis and

... signalling pathways modulating cellular metabolism, cell survival and healthspan. Accordingly, impairment of mitochondria has been associated with numerous pathological conditions and ageing. Maintenance of cellular and organismal homeostasis thus hinges on fine-tuning mitochondrial quality control. ...
267 CHAPTER 6 Discussion of Results The aim of
267 CHAPTER 6 Discussion of Results The aim of

... virus (HIV) infections. This situation provided the momentum to the search for new antimicrobial substances from different source like medicinal plants. The use of plant extracts with known antimicrobial properties can be of vast significance for therapeutic treatment.201 All the extracts at a conce ...
BIOSYNTHESIS IN ISOLATED ACETABULARIA CHLOROPLASTS I
BIOSYNTHESIS IN ISOLATED ACETABULARIA CHLOROPLASTS I

... hydrolysis time for the pellet, while easy to control, will reveal a somewhat different amino acid pattern after shorter or longer periods (9). Finally, thin-layer chromatography of crude hydrolysates is subject to many variables. Table I I and Fig. 4 summarize the amino acid labeling found in prote ...
Calcium homeostasis
Calcium homeostasis

... Calcium regulated homeostasis and transport • Calcium has a major role in biomembrane fusion thus regulating many other homeostatic events in the organism • Most of membrane fusions require calcium, such as exocytosis, so the calcium can be released from the vehicle itself or from the ER • Calcium ...
Tubulin folding is altered by mutations in a putative GTP binding motif
Tubulin folding is altered by mutations in a putative GTP binding motif

... Tubulins are GTP-binding proteins (Jacobs et al., 1974; Weisenberg et al., 1976). β-tubulin is a GTPase, while αtubulin has no enzyme activity (Carlier, 1982). Tubulins have an invariant region rich in glycines that is found in α-, β-, and γ-chains and which is presumed to form a phosphate-binding l ...
1 Function of the Arabidopsis kinesin-4, FRA1, requires
1 Function of the Arabidopsis kinesin-4, FRA1, requires

... Plants contain a large number of kinesins but little is known about which ones are used for transport and microtubule regulatory functions (Richardson et al., 2006; Zhu and Dixit, 2012). Since kinesin-1, 2 and 3 members are absent in plants, other classes of kinesins probably perform plus-end-direct ...
PDF
PDF

... activity in the zebrafish embryo, we show that the fusion of embryonic fast-twitch myoblasts requires the activities of Dock1 and the closely related Dock5 protein. In addition, we show that the adaptor proteins Crk and Crk-like (Crkl), with which Dock proteins are known to interact physically, are ...
Mucolipin 1 channel activity is regulated by protein kinase A
Mucolipin 1 channel activity is regulated by protein kinase A

... that contained both late-endosomal and lysosomal markers [21]. Recently, several groups have suggested additional roles for MCOLN1 in different cellular processes, including regulation of lysosomal acidification [18], autophagy of mitochondria [22] and lysosomal secretion [23]. One way to gain infor ...
thebacterialflagellum
thebacterialflagellum

... the late 17th century [1]. He manufactured microscopes and discovered small animals in his well water. He described them as “little eels, or worms, lying all huddled up together and wriggling” [2]. The bacteria he was observing was spirillum, probably Spirillum Volutans. However, Leeuwenhoek did not ...
Mitochondrial Dynamics
Mitochondrial Dynamics

... localizes to the inner surface of the cell membrane at division sites, where it forms a ring structure (Z ring) that enables constriction and scission of the parent into two daughter cells. FtsZ is a GTPase, which can hydrolyze guanosine triphosphate to provide a source of energy. However, it is tho ...
Boundless Study Slides
Boundless Study Slides

... • growth factor a naturally-occurring substance capable of stimulating cellular growth, proliferation, and cellular differentiation • GTP-binding protein a protein which binds GTP and catalyzes its conversion to GDP • hydrophobic lacking an affinity for water; unable to absorb, or be wetted by water ...
CASK (LIN2) interacts with Cx43 in wounded skin and their
CASK (LIN2) interacts with Cx43 in wounded skin and their

... In vertebrates, connexin proteins assemble into tightly packed gap junctional channels to connect the cytoplasms of adjacent cells via an aqueous-filled channel. Gap junctions allow the passive diffusion of molecules lower than 1000 Da in size such as ions, amino acids, nutrients and secondary messe ...
Membrane immersion allows rhomboid proteases to achieve
Membrane immersion allows rhomboid proteases to achieve

... eLife digest Proteases are enzymes that break the peptide bonds that hold proteins together, and have a central role in many physiological processes, including digestion, blood clotting and programmed cell death. An important characteristic of proteases is that they are highly selective, only cuttin ...
vts_6580_8973.
vts_6580_8973.

... Tumor suppressor genes Tumor suppressor genes are involved in many different functions like control of cell division, growth, DNA-repair mechanisms and apoptosis. Tumor suppressor genes are inactivated by “loss of function” mutations (Falco & Giordano 2006), resulting in a failure to respond to sign ...
BIOL_218_MTX3_QA_101110.53
BIOL_218_MTX3_QA_101110.53

... projection fibers ...
BIOL 218 MTX3 QA 101110.5
BIOL 218 MTX3 QA 101110.5

... projection fibers ...
< 1 ... 37 38 39 40 41 42 43 44 45 ... 1009 >

Endomembrane system

The endomembrane system is composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments, or organelles. In eukaryotes the organelles of the endomembrane system include: the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, endosomes and the cell membrane. The system is defined more accurately as the set of membranes that form a single functional and developmental unit, either being connected directly, or exchanging material through vesicle transport. Importantly, the endomembrane system does not include the membranes of mitochondria or chloroplasts.The nuclear membrane contains two lipid bilayers that encompass the contents of the nucleus. The endoplasmic reticulum (ER) is a synthesis and transport organelle that branches into the cytoplasm in plant and animal cells. The Golgi apparatus is a series of multiple compartments where molecules are packaged for delivery to other cell components or for secretion from the cell. Vacuoles, which are found in both plant and animal cells (though much bigger in plant cells), are responsible for maintaining the shape and structure of the cell as well as storing waste products. A vesicle is a relatively small, membrane-enclosed sac that stores or transports substances. The cell membrane, is a protective barrier that regulates what enters and leaves the cell. There is also an organelle known as the Spitzenkörper that is only found in fungi, and is connected with hyphal tip growth.In prokaryotes endomembranes are rare, although in many photosynthetic bacteria the plasma membrane is highly folded and most of the cell cytoplasm is filled with layers of light-gathering membrane. These light-gathering membranes may even form enclosed structures called chlorosomes in green sulfur bacteria.The organelles of the endomembrane system are related through direct contact or by the transfer of membrane segments as vesicles. Despite these relationships, the various membranes are not identical in structure and function. The thickness, molecular composition, and metabolic behavior of a membrane are not fixed, they may be modified several times during the membrane's life. One unifying characteristic the membranes share is a lipid bilayer, with proteins attached to either side or traversing them.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report