Abstract
A feather-degrading bacterium was isolated from poultry decomposition feathers in China. The strain, named L1, showed significant feather-degrading activity because it grew and reproduced quickly on basal medium containing 10 g/L of native feather as the source of energy, carbon, and nitrogen. According to the phenotypic characteristics and 16S rRNA profile, the isolate belongs to Stenotrophomonas maltophilia. Keratinase activity of the isolate was determined during cultivation on raw feathers at different temperatures and initial pH. Maximum growth and feather-degrading activity of the bacterium were observed at 40°C and initial pH ranging from 7.5 to 8.0. The crude enzyme was purified by ammonium sulphate precipitation, Sephadex G-100 chromatographic and ceramic hydroxyapatite (CHT) chromatographic. Its molecular mass estimated as 35.2 kDa in SDS-PAGE. The enzyme had an optimum activity at the pH was 7.8 and the temperature was 40°C. The keratinase was wholly inhibited by a serine protease inhibitor, PMSF. Its activity was activated or inhibited by different metal ions. The keratinase activity of enzyme from strain L1 functioned on different keratins, such as feather, hair, wool, horn, and so on.
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References
Williams CM, Lee CG, Garlich JD, Shih JCH (1991) Evaluation of a bacterial feather fermentation product, feather-lysate, as a feed protein. Poultry Sci 70:85–94
Gupta R, Ramnani P (2006) Microbial keratinases and their prospective applications: an overview. Appl Microbiol Biotechnol 70:21–33
Onifade AA, Al-Sane NA, Al-Musallam AA, Al-Zarban S (1998) A review: potentials for biotechnological applications of keratin-degrading microorganisms and their enzymes for nutritional improvement of feathers and other keratins as livestock feed resources. Bioresour Technol 66:1–11
Zaghloul TI, Haroun MA, El-Gayar K, Abdelal A (2004) Recycling of keratin-containing materials (chicken feather) through genetically engineered bacteria. Polym Plast Technol Eng 43:1589–1599
Lee CG, Ferket PR, Shih JCH (1991) Improvement of feather digestibility by bacterial keratinase as a feed additive. FASEB J 5:596–596
Langeveld JPM, Wang JJ, Van de Wiel DFM, Shih GC, Garssen GJ, Bossers A, Shih JCH (2003) Enzymatic degradation of prion protein in brain stem from infected cattle and sheep. J Infect Dis 188:1782–1789
Mitsuiki S, Hui Z, Matsumoto D, Sakai M, Moriyama Y, Furukawa K, Kanouchi H, Oka T (2006) Degradation of PrPSc by keratinolytic protease from Nocardiopsis sp TOA-1. Biosci Biotechnol Biochem 70:1246–1248
Wang JH, Borwornpinyo R, Odetallah N, Shih JCH (2005) Enzymatic degradation of a prion-like protein, Sup35NM-His6. Enzyme Microb Technol 36:758–765
Yoshioka M, Miwa T, Horii H, Takata M, Yokoyama T, Nishizawa K, Watanabe M, Shinagawa M, Murayama Y (2007) Characterization of a proteolytic enzyme derived from a Bacillus strain that effectively degrades prion protein. J Appl Microbiol 102:509–515
Gradisar H, Kern S, Friedrich J (2000) Keratinase of Doratomyces microsporus. Appl Microbiol Biotechnol 53:196–200
Kumar S, Tamura K, Nei M (2004) MEGA3: Integrated software for Molecular Evolutionary Genetics Analysis and sequence alignment. Brief Bioinform 5:150–163
Bradford MM (1976) A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal Biochem 72:248–254
Laemmli UK (1970) Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4. Nature 227:680–685
Bockle B, Galunsky B, Muller R (1995) Characterization of a keratinolytic serine proteinase from Streptomyces pactum DSM 40530. Appl Environ Microbiol 61:3705–3710
Kim JM, Lim WJ, Suh HJ (2001) Feather-degrading Bacillus species from poultry waste. Process Biochem 37:287–291
Zaghloul Ti (1998) Cloned Bacillus subtilis alkaline protease (aprA) gene showing high level of keratinolytic activity. Appl Biochem Biotechnol 70–2:199–205
Riffel A, Brandelli A (2002) Isolation and characterization of a feather-degrading bacterium from the poultry processing industry. J Ind Microbiol Biotechnol 29:255–258
Lucas FS, Broennimann O, Febbraro I, Heeb P (2003) High diversity among feather-degrading bacteria from a dry meadow soil. Microb Ecol 45:282–290
Sangali S, Brandelli A (2000) Isolation and characterization of a novel feather-degrading bacterial strain. Appl Biochem Biotechnol 87:17–24
Yamamura S, Morita Y, Hasan Q, Rao SR, Murakami Y, Yokoyama K, Tamiya E (2002) Characterization of a new keratin-degrading bacterium isolated from deer fur. J Biosci Bioeng 93:595–600
Yamamura S, Morita Y, Hasan Q, Yokoyama K, Tamiya E (2002) Keratin degradation: a cooperative action of two enzymes from Stenotrophomonas sp. Biochem Biophys Res Commun 294:1138–1143
Suntornsuk W, Tongjun J, Onnim P, Oyama H, Ratanakanokchai K, Kusamran T, Oda K (2005) Purification and characterisation of keratinase from a thermotolerant feather-degrading bacterium. World J Microbiol Biotechnol 21:1111–1117
Bressollier P, Letourneau F, Urdaci M, Verneuil B (1999) Purification and characterization of a keratinolytic serine proteinase from Streptomyces albidoflavus. Appl Environ Microbiol 65:2570–2576
Friedrich AB, Antranikian G (1996) Keratin Degradation by Fervidobacterium pennavorans, a novel thermophilic anaerobic species of the order thermotogales. Appl Environ Microbiol 62:2875–2882
Gradisar H, Friedrich J, Krizaj I, Jerala R (2005) Similarities and specificities of fungal keratinolytic proteases: comparison of keratinases of Paecilomyces marquandii and Doratomyces microsporus to some known proteases. Appl Environ Microbiol 71:3420–3426
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This work was partially supported by Program for Changjiang Scholars and Innovative Research Team in University (No. IRT0526) and partially financed by Shanghai Leading Academic Discipline Project (No. B604).
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Cao, ZJ., Zhang, Q., Wei, DK. et al. Characterization of a novel Stenotrophomonas isolate with high keratinase activity and purification of the enzyme. J Ind Microbiol Biotechnol 36, 181–188 (2009). https://doi.org/10.1007/s10295-008-0469-8
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DOI: https://doi.org/10.1007/s10295-008-0469-8