Threading Alignment
Threading Alignment - Related Videos
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
07:12
Microengineering 3D Collagen Hydrogels with Long-Range Fiber Alignment
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Cited by 3 •
2022
This protocol demonstrates the use of a microfluidic channel with changing geometry along the fluid flow direction to generate extensional strain (stretching) to align fibers in a 3D collagen hydrogel (<250 µm in thickness). The resulting alignment extends across several millimeters and is influenced by the extensional strain rate.
01:17
Design Example: Alignment of a Road Line Using GIS
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2025
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
09:48
An Approach to Enhance Alignment and Myelination of Dorsal Root Ganglion Neurons
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Cited by 7 •
2016
This protocol describes the isolation of dorsal root ganglion (DRG) neurons isolated from rats and the culture of DRG neurons on a static pre-stretched cell culture system to enhance axon alignment, with subsequent co-culture of Schwann Cells (SCs) to promote myelination.
01:29
Impression Management Techniques III: Aligning Actions
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2025
Aligning actions are communicative strategies individuals employ to maintain social harmony and preserve personal identity in the face of potential disruptions to social norms. These actions are particularly important in managing social impressions when one's behavior might be seen as inappropriate, incompetent, or morally questionable.Types of Aligning ActionsThe three principal types of aligning actions are disclaimers, accounts, and apologies.DisclaimersDisclaimers are preventive; they are...
FAQs
The method assesses compatibility between amino acid residues and the structural environment they would occupy in a candidate template. It considers whether residues align with appropriate positions and whether the overall sequence fits the template’s fold. This structure-aware evaluation can identify plausible relationships even when direct sequence similarity alone provides limited evidence.
Threading alignment does not depend exclusively on close amino acid sequence matching. It also examines shared structural features, such as the organization of secondary-structure elements and conserved positions within a fold. Consequently, proteins with distant evolutionary relationships may still produce a meaningful structural match when their sequences have diverged substantially.
The arrangement of secondary-structure elements provides a structural framework for judging whether a sequence can occupy a candidate fold. An alignment is more plausible when the sequence fits the template’s organization of these elements, rather than merely matching isolated residues. This comparison helps distinguish structurally compatible placements from alignments based only on local sequence resemblance.
Gaps and insertions are evaluated in relation to the template’s structural organization, while conserved positions help identify locations that may be important for maintaining the fold. Their placement therefore contributes to judging alignment quality, not just to preserving a continuous sequence match. Together, these features help connect sequence variation with a compatible three-dimensional arrangement.
A typical analysis begins with an amino acid sequence and experimentally determined structures of related or compatible proteins as candidate templates. The sequence is then fitted to those structural frameworks, and residue environments, secondary-structure arrangement, conserved positions, and gaps or insertions are evaluated. The resulting comparison supports selection of a plausible fold for further biological interpretation.
A plausible fold can provide a structural basis for annotating an unknown sequence and investigating its possible molecular function. Because the approach uses compatible structural environments, it can supply information when direct sequence evidence is limited. The resulting model may also help researchers examine how the protein relates to other proteins through shared structure and evolutionary history.
In biology, the method supports studies of protein evolution, molecular interactions, disease-associated mutations, and structure-guided drug discovery. A predicted structural model can connect an unknown or distantly related sequence to an experimentally characterized fold, giving researchers a framework for considering functional relationships, mutation effects, or interaction-related questions without requiring a newly determined experimental structure.