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Related Concept Videos

Stone Masonry01:29

Stone Masonry

Stone masonry is a construction technique that uses individual stones to build structures and can be categorized into two main types: rubble and ashlar. Rubble masonry uses uneven, naturally shaped stones such as river rocks or fragments from quarries. This method often requires the mason to select and possibly shape each stone to fit the designated space, ensuring a proper build, even with irregular stone sizes and shapes. Ashlar masonry, on the other hand, employs uniformly cut stones that...
Types of Building Stone01:30

Types of Building Stone

Building stones, essential materials for construction, are extracted from natural rock deposits and processed into specific forms and dimensions suitable for various building applications. These stones are broadly classified into three types based on their geological formation: igneous, sedimentary, and metamorphic.
Igneous rocks are formed from the solidification of magma or lava. An example is granite, known for its durability and resistance to weathering, making it ideal for parts of...
Quarrying of Stone01:15

Quarrying of Stone

Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.
Masonry Paving01:21

Masonry Paving

The construction of masonry paving involves using materials such as bricks, stones, and concrete masonry units. These materials are chosen for their shape, color, strength, and resistance to abrasion and weathering. Masonry units can be installed dry on a thin layer of sand and a gravel base, or they can be embedded in mortar or asphalt on a concrete slab. For areas subjected to heavy vehicular loads, a rigid base layer of reinforced or unreinforced concrete is recommended. In contrast,...
Laying Concrete Masonry01:16

Laying Concrete Masonry

Constructing a concrete masonry wall involves a series of steps designed to ensure durability, stability, and alignment. The construction starts with preparing the base, which includes cleaning the area where the wall will be erected. The next step involves spreading mortar where the first row of concrete blocks will be laid, typically starting at a corner section to help define the wall's boundaries.
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Brick Masonry

Brick masonry uses bricks as the building blocks and involves building walls from individual bricks laid in mortar. The basic building block of brick masonry is the wythe, a vertical layer of bricks with a thickness of one brick. Within a wythe, bricks can be laid in various courses or patterns, with the most common being the stretcher course, where bricks are laid with their long edge horizontal and face parallel to the wall.
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A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
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Published on: September 13, 2022

Stoned.

A Marie Phillips1, Mani Ramaswami, Leonard E Kelly

  • 1Department of Genetics, The University of Melbourne, Parkville 3010, Australia. m.phillips@unimelb.edu.au

Traffic (Copenhagen, Denmark)
|November 4, 2009
PubMed
Summary
This summary is machine-generated.

Stoned proteins (STNA and STNB) are crucial for vesicle trafficking in Drosophila neurons. Understanding their distinct roles in synaptic vesicle recycling is key to deciphering endocytosis mechanisms.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Molecular Biology

Background:

  • Stoned proteins, STNA and STNB, are vital for vesicle trafficking in Drosophila melanogaster neurons.
  • Deletion of the stoned locus results in lethality, highlighting their essential functions.
  • Homologues of STNB are found across multicellular species, indicating conserved importance.

Purpose of the Study:

  • To review and analyze published literature on the functions and mechanisms of STNA and STNB.
  • To clarify the specific roles of stoned proteins in synaptic vesicle recycling.
  • To distinguish between different endocytosis pathways and membrane retrieval mechanisms.

Main Methods:

  • Literature review and analysis of existing data on stoned proteins.
  • Examination of evidence related to stoned protein involvement in endocytosis.
  • Comparison of stoned protein functions with alternative models of vesicle cycling.

Main Results:

  • Stoned proteins are essential for normal vesicle trafficking and synaptic vesicle pool regulation.
  • STNA and STNB are structurally distinct, suggesting separate cellular functions.
  • Evidence points to a critical role for stoned proteins in the recycling or specification of synaptic vesicles.

Conclusions:

  • Stoned proteins are indispensable for synaptic vesicle recycling in Drosophila.
  • Further research into stoned proteins can help resolve debates surrounding endocytosis mechanisms.
  • Understanding stoned proteins offers insights into distinct pathways of membrane retrieval.