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A new family of small (5 kDa) protein inhibitors of insect α‐amylases from seeds or sorghum (Sorghum bicolor (L) Moench) have sequence homologies with wheat γ‐purothionins
Open accessAbstract
Three isoinhibitors of locust and cockroach gut α‐amylases were purified from seeds of sorghum by saline extraction, precipitation with ammonium sulphate, affinity chromatography on Red‐Sepharose and preparative RP‐HPLC on Vydac C???. The complete primary structures were determined by automatic degradation of the intact reduced and S‐alkylated proteins, and by manual DABITC/PITC microsequencing of peptides obtained from enzyme digests. The inhibitors consist of 47 (Slα‐1) or 48 (Slα‐2, STα‐3) amino acids, and are the smallest plant inhibitors of α‐amylase currently known. The sequences of the three isoinhibitors exhibit between 38% and 87% identity among themselves and also have homology (32–81%) with the γ‐purothionins recently isolated from wheat endosperm.
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Improved tools for biological sequence comparison.
Pearson, W. R., & Lipman, D. J. (1988) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.85.8.2444 · Cited by 11,227
Cited by
Antimicrobial Peptides from Plants
Broekaert, W. F., Cammue, B. P. A., De Bolle, M. F. C., Thevissen, K., De Samblanx, G. W., Osborn, R. W., & Nielson, K. (1997) · Critical Reviews in Plant Sciences · doi:10.1080/07352689709701952 · Cited by 678
Osborn, R. W., De Samblanx, G. W., Thevissen, K., Goderis, I., Torrekens, S., Van Leuven, F., Attenborough, S., Rees, S. B., & Broekaert, W. F. (1995) · FEBS Letters · doi:10.1016/0014-5793(95)00666-w · Cited by 391
Identification of a cowpea γ‐thionin with bactericidal activity
Franco, O. L., Murad, A. M., Leite, J. R., Mendes, P. A. M., Prates, M. V., & Bloch, C. (2006) · The FEBS Journal · doi:10.1111/j.1742-4658.2006.05349.x · Cited by 103
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Metadata
- Authors
- Bloch, C., & Richardson, M.
- Venue
- FEBS Letters
- Publisher
- Wiley
- Published
- 1991-02-11
- Volume
- 279
- Issue
- 1
- Pages
- 101-104
- ISSN
- 0014-5793 (ISSN-L)
- 1873-3468
- OpenAlex
- W1991484014
- Cited by
- 220
- References
- 1
- FWCI
- 3.18
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Bloch, C., & Richardson, M. (1991). A new family of small (5 kDa) protein inhibitors of insect α‐amylases from seeds or sorghum (Sorghum bicolor (L) Moench) have sequence homologies with wheat γ‐purothionins. FEBS Letters. https://doi.org/10.1016/0014-5793(91)80261-z
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
