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Purification and partial characterization of vinculin from chicken liver nuclear extract

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Abstract

Vinculin is a well-known cytoskeletal protein and is a component of the integrin-mediated cell-matrix adhesion system. Recently, vinculin is also being reported from the nuclei from a number of organisms. However, there is no report yet on purification of nuclear vinculin from the native source of any organism. In the present study, by using western blotting, we show nuclear localization of vinculin in chicken liver. The chicken liver nuclear vinculin was purified to homogeneity and subsequently, the identity of vinculin was confirmed by peptide mass fingerprinting. Further, actin was co-immunoprecipitated with vinculin from chicken liver nuclear extract. Interestingly, the above immunoprecipitate (IP) demonstrated histone specific protease activity. Thus, the present study suggests plausible interaction of vinculin with actin and histone specific proteases in the chicken liver nuclei.

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Abbreviations

MALDI-TOF:

Matrix-Assisted Laser Desorption/Ionization-Time Of Flight

IP:

Immuno-precipitate

GDH:

Glutamate dehydrogenase

PMSF:

Phenazine methosulfonyl fluoride

DTT:

Dithiothreitol

CP:

Cellulose phosphate

DEAE:

Diethylaminoethyl

EDTA:

Edetate disodium

EGTA:

Ethylene glycol-bis (β-aminoethyl ether)-N,N,N′,N′-tetraacetic acid

RIPA:

Radio-immuno-precipitation assay

CETH:

Chicken erythrocyte total histones

CLTH:

Chicken liver total histones

CLNE:

Chicken liver nuclear extract

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Acknowledgements

The present work was supported by research grants from DST (EMR/2016/002571) and Delhi University (R&D grant 2016-17) for the present work. PP and MB acknowledge Kalinga Institute of Industrial Technology Bhubaneswar, Orissa and CSIR, India, respectively for fellowships.

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Correspondence to Jogeswar S. Purohit.

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Panda, P.P., Bohot, M., Chaturvedi, M.M. et al. Purification and partial characterization of vinculin from chicken liver nuclear extract. Biologia 76, 1349–1357 (2021). https://doi.org/10.1007/s11756-021-00691-3

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  • DOI: https://doi.org/10.1007/s11756-021-00691-3

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