What is the clinical evidence from this study?

Intervention: 45-kD vinculin polypeptide (amino acids 1-398) vs. 41-kD vinculin polypeptide (missing amino acids 167-207). Primary outcome: Talin binding activity and localization to cell matrix junctions.

What question did this study set out to answer?

To identify the talin binding domain in vinculin and understand its role in cell-matrix junctions.

December 1, 1989The Journal of Cell BiologyOpen Access

Identification of a talin binding site in the cytoskeletal protein vinculin.

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Key result

The 45-kD NH2-terminal region of vinculin binds to talin and localizes to cell matrix junctions, whereas a 41-kD polypeptide lacking amino acids 167-207 loses talin binding and localization ability.

Population

In vitro transcription translation system and Cos cells expressing vinculin polypeptides

Comparison

Expression of different vinculin polypeptides vs BSA and comparison between different vinculin…

Design

Preclinical

Authors

PJPeter M. JonesKing's College London PJPaul JacksonUniversity of Essex GPG J PriceRoche (United Kingdom)

Discussion

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Implication

Does not change clinical practice; extends molecular mapping of focal adhesions while leaving cardiovascular relevance open.

Key Points

To identify the talin binding domain in vinculin and understand its role in cell-matrix junctions.
Expressed NH2-terminal region of vinculin using in vitro transcription translation system.
Analyzed binding activity of 45-kD and 41-kD vinculin polypeptides to talin and BSA.
Conducted deletion analysis of residues 167-207 to assess their role in talin binding.
45-kD vinculin polypeptide bound to talin and localized to cell matrix junctions, while the 41-kD did not.
Deletion of specific residues (167-201) significantly reduced talin binding activity.
Some deletion mutants maintained localization to cell matrix junctions despite reduced binding to talin.

Structured PICO

Population

In vitro transcription translation system and Cos cells expressing vinculin polypeptides

Intervention

Expression of different vinculin polypeptides (45-kD containing first 398 amino acids, 41-kD missing amino acids 167-207, and various deletion mutants)

Comparator

BSA (for binding assay) and comparison between different vinculin polypeptides

Outcome

Talin binding activity and localization to cell matrix junctionssurrogate

This basic science study identifies residues 167-201 of vinculin as critical for its binding to talin and localization to cell-matrix junctions.

Cite This Study

Jones et al. (1989) studied this question. 45-kD vinculin polypeptide (amino acids 1-398) vs. 41-kD vinculin polypeptide (missing amino acids 167-207) was evaluated on Talin binding activity and localization to cell matrix junctions. The 45-kD NH2-terminal region of vinculin binds to talin and localizes to cell matrix junctions, whereas a 41-kD polypeptide lacking amino acids 167-207 loses talin binding and localization ability.

synapsesocial.com/papers/6a2011bb17bd4d7ccf04d1e3 https://doi.org/10.1083/jcb.109.6.2917

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Identification of a talin binding site in the cytoskeletal protein vinculin.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Identification of a talin binding site in the cytoskeletal protein vinculin.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider