Angiotensinogen Precursor Protein
Angiotensinogen Precursor Protein - Related Videos
01:39
Mitochondrial Precursor Proteins
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2023
Mitochondrial precursors are partially unfolded or loosely folded polypeptide chains. Newly synthesized precursors are inhibited from spontaneously folding into their native conformation by the cytosolic chaperones, heat shock proteins 70 (Hsp70), and mitochondrial import stimulation factors (MSFs). Precursors bound to MSFs are guided to the TOM70-TOM37 receptors, while precursors bound to Hsp70 chaperones are targetted to TOM20-TOM22 receptor complexes. Most of the mitochondrial precursors...
10:08
Purification and Aggregation of the Amyloid Precursor Protein Intracellular Domain
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Cited by 1 •
2012
A method for large-scale purification of the APP intracellular domain (AICD) is described. We also describe methodology to induce in vitro AICD aggregation and visualization by atomic force microscopy. The methods described are useful for biochemical/structural characterization of the AICD and the effects of molecular chaperones on its aggregation.
08:01
Stimulation of Notch Signaling in Mouse Osteoclast Precursors
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Cited by 13 •
2017
Notch signaling is a form of cellular communication that relies upon direct contact between cells. To properly induce Notch signaling in vitro, Notch ligands must be presented to cells in an immobilized state. This protocol describes methods for in vitro stimulation of Notch signaling in mouse osteoclast precursors.
02:59
Light-Activated Treatment of Bacterial Biofilms Using a Photosensitizer Precursor
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2026
Source: Zhao, K., et al. An In Vitro Model to Study the Effect of 5-Aminolevulinic Acid-mediated Photodynamic Therapy on Staphylococcus aureus Biofilm. J. Vis. Exp. (2018)The video demonstrates a photodynamic therapy protocol to assess antibacterial effects on Gram-positive bacterial biofilms. Biofilms are divided into four groups: two receive a photosensitizer precursor, and two receive a buffer. All are incubated in the dark, followed by red light exposure to one precursor-treated group and...
06:39
Culture of myeloid dendritic cells from bone marrow precursors
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Cited by 22 •
2008
This video demonstrates the procedure for differentiating myeloid dendritic cells from mouse bone marrow. Isolation of mouse tibia and femur, and processing of bone marrow are demonstrated. Pictures demonstrating cell morphology before and after differentiation, and figures depicting cell phenotype and IL-12 production following maturation using CpG are shown.
FAQs
Its processing occurs through two sequential cleavage events. Renin first acts on angiotensinogen to produce angiotensin I, an intermediate peptide rather than the pathway’s main effector. Angiotensin-converting enzyme then converts angiotensin I into angiotensin II. This sequence links precursor processing to downstream vasoconstriction and aldosterone secretion, making each processing step important for hormonal regulation.
Reduced kidney blood flow can activate signals that promote renin release. Once released, renin accesses circulating angiotensinogen and initiates formation of angiotensin I, allowing the pathway to respond to a renal or circulatory change. The resulting angiotensin II activity supports vasoconstriction and aldosterone secretion, connecting kidney perfusion with blood-pressure and fluid-balance regulation.
Genetic variation can be examined as a potential source of differences in angiotensinogen expression or processing. Such differences may help explain why regulation of the renin-angiotensin-aldosterone system varies among biological contexts and individuals. In research, studying these variants contributes to investigations of hypertension and to broader understanding of cardiovascular and renal physiology.
Expression studies examine how the production of this precursor relates to activity of the renin-angiotensin-aldosterone system. When considered alongside processing and genetic variation, expression data can help researchers investigate mechanisms associated with hypertension and altered cardiovascular or renal physiology. These studies therefore connect molecular observations with the operation of a hormone pathway affecting blood pressure and fluid balance.
Hypertension research can use angiotensinogen as an entry point for examining how precursor supply, renin-mediated processing, and later angiotensin II formation influence blood-pressure regulation. Investigators also study its expression and genetic variation to clarify disease mechanisms. This work supports evaluation of therapies designed to interrupt the renin-angiotensin-aldosterone system at different points in its signaling sequence.
At the molecular level, angiotensinogen provides a system for studying protein expression, enzymatic processing, and genetic variation. In renal research, its pathway connects kidney-related signals with downstream control of vasoconstriction, aldosterone secretion, and fluid balance. Examining the same precursor across these levels helps relate molecular events to cardiovascular and kidney physiology.