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The proteomics of wool fibre morphogenesis

journal contribution
posted on 2023-05-03, 20:43 authored by Jeff PlowmanJeff Plowman, Sivasangary Ganeshan, Joy Woods, van Shaijik Bede, Santanu Deb-Choudhury, Ancy ThomasAncy Thomas, Stefan ClerensStefan Clerens, David Scobie, Duane HarlandDuane Harland
Gel and gel-free proteomic techniques have been used for the first time to directly study the proteins present in whole wool follicles and dissected portions of follicles that correlated with morphological changes in the developing fibre as determined by transmission electron microscopy. Individual wool follicles were dissected into four portions designated as the: bulb, elongation, keratogenous and keratinisation portions. Gel-free proteomic analysis of dissected portions from 30 follicles showed that the first keratins to appear were K31, K35 and K85, in the bulb portion. The first epithelial KAP, trichohyalin, was detected in the bulb portion and the first cortical KAP, KAP11.1 was found in the elongation portion. Other major trichocyte keratins and cortical KAPs began to appear further up the follicle in the keratogenous and keratinisation zones. These results were consistent with what has been observed from gene expression studies and correlated well with the morphological changes observed in the follicle. Other proteins detected by this approach included the keratin anchor protein desmoplakin, as well as vimentin and epithelial keratins, histones, ribosomal proteins and collagens. Two-dimensional electrophoretic (2DE) analysis of dissected portions of 50 follicles revealed substantial changes in the position, number and intensity of the spots of the trichocyte keratins as they progressed through the follicle zones, suggesting that they are subject to modifications as a result of the keratinisation process. Also present in the 2DE maps were a number of epithelial keratins, presumably from the inner and outer root sheaths, and the dermal components.


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© 2015 Elsevier Inc. All rights reserved.


  • English

Does this contain Māori information or data?

  • No



Journal title

Journal of Structural Biology




Plowman, J. E., Harland, D. P., Ganeshan, S., Woods, J. L., van Shaijik, B., Deb-Choudhury, S., Thomas, A., Clerens, S., & Scobie, D. R. (2016). The proteomics of wool fibre morphogenesis. Journal of Structural Biology, 191(3), 341-51. doi: 10.1016/j.jsb.2015.07.005

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