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Mitigation of galvanized steel biocorrosion by Pseudomonas aeruginosa biofilm using a biocide enhanced by trehalase. Bioelectrochemistry 2023; 154:108508. [PMID: 37451042 DOI: 10.1016/j.bioelechem.2023.108508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/02/2023] [Accepted: 07/08/2023] [Indexed: 07/18/2023]
Abstract
Pseudomonas aeruginosa is a facultative bacterium that is pathogenic. It is ubiquitous in the environment including air handling systems. It causes microbiologically influenced corrosion (MIC) aerobically and anaerobically. In this work, P. aeruginosa was grown as a nitrate reducing bacterium (NRB) in Luria-Bertani medium with KNO3 at 37 °C. Trehalase, an enzyme which plays a crucial role in biofilm formation was found to enhance the treatment of P. aeruginosa biofilm and its MIC against galvanized steel by tetrakis-hydroxymethyl phosphonium sulfate (THPS) green biocide. After a 7-d incubation, 30 ppm (w/w) trehalase reduced sessile cell count by 0.8-log, and it also reduced galvanized steel weight loss by 14%, compared to 2.3-log and 39%, respectively for the 30 ppm THPS treatment. The combination of 30 ppm THPS + 30 ppm trehalase reduced sessile cell count further by 0.1-log and weight loss by 13% compared to using THPS alone. Electrochemical corrosion measurements supported weight loss results. The injection of 20 ppm riboflavin into a 3-d P. aeruginosa broth failed to accelerate the corrosion rate, suggesting that nitrate reducing P. aeruginosa MIC of galvanized steel did not belong to extracellular electron transfer-MIC, because Zn was hydrolyzed after the microbe damaged the passive film.
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The impact of UV-C radiation on the sugar metabolism of the red flour beetle Tribolium castaneum herbst (coleoptera; tenebrionidae). Int J Radiat Biol 2023; 100:289-295. [PMID: 37707309 DOI: 10.1080/09553002.2023.2258199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/03/2023] [Indexed: 09/15/2023]
Abstract
PURPOSE Ultraviolet-C (UV-C) is known to induce morphological abnormality in various parts of the red flour beetle, Tribolium castaneum, including its wings, antennae, eyes, legs, and reproductive organs. However, little is known about the effects of UV-C on T. castaneum's sugar content and enzyme activity. MATERIAL AND METHODS We investigated the concentrations of glucose and trehalose as well as changes in trehalase activity in different developmental stages following UV-C radiation at different exposure periods (1, 2, 4, 8, 16, 32, and 64 min). In addition, the larval mortality and body weight were examined. RESULTS A reduction in glucose content was recorded in 10-, 15- and 20-day-old larvae and trehalase enzyme activity was recorded in 5- and 10-day-old larvae, whereas an increase in trehalose content was found in adults irradiated with UV-C. In addition, UV-C radiation for 1-64 min caused larval mortality on the first and subsequent days post-irradiation. Moreover, UV-C irradiated larvae exhibited lower body weight, which aligned with the reduction of trehalase activity and glucose content from days 1-6 post-exposure, and the degree of these reductions corresponded to the exposure times. CONCLUSION UV-C affected sugar content through the reduction of trehalase activity, and glucose declination may cause mortality in T. castaneum; however, further research is needed to provide a better understanding of the impact of UV-C on sugar metabolism.
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The effects of acetamiprid multigeneration stress on metabolism and physiology of Aphis glycines Matsumura (Hemiptera: Aphididae). ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2022; 110:e21903. [PMID: 35416322 DOI: 10.1002/arch.21903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/15/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Aphis glycines Matsumura (Hemiptera: Aphididae) is a major soybean pest that often poses a serious threat to soybean production. In this study, we checked the effects of acetamiprid on redox, energy metabolism, and hormone expression in A. glycines. The LC50 and LC30 of acetamiprid were used to treat the fourth instar nymphs in each generation from F0 to F4 to measure the activity of peroxidase, pyruvate kinase, and trehalase using a microassays approach. The peroxidase activity was significantly higher than control when treated with the LC30 of acetamiprid in F2-F5 generations. The activity of pyruvate kinase was significantly higher, while trehalase activity was substantially lower than control in each generation. Besides, we monitored molting and juvenile hormone expression in soybean aphids using enzyme-linked immunosorbent assay. The juvenile hormone titer of third instar nymphs was significantly higher in the treatment group (F1, F2, F4, and F5), while no effects were noted in the F3 generation. Taken together, the activity of peroxidase and pyruvate kinase in soybean aphid first increased to the peak and then decreased, while the trehalase activity continuously decreased in all generations following exposure to acetamiprid. The juvenile hormone titer was significantly higher, while the molting hormone titer was significantly lower in LC50 -treated aphids than in control. Moreover, the LC30 of acetamiprid increased the molting hormone expression in soybean aphids. These findings indicated a baseline for the effective use of acetamiprid in controlling soybean aphids.
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Effects of multigenerational imidacloprid and thiamethoxam stress on metabolism and physiology of Aphis glycines Matsumura (Hemiptera: Aphididae). PLoS One 2022; 17:e0271069. [PMID: 35802579 PMCID: PMC9269462 DOI: 10.1371/journal.pone.0271069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 06/22/2022] [Indexed: 11/18/2022] Open
Abstract
The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), a primary pest of soybean, poses a severe threat to soybean production. In this study, the 4th instar nymphs were exposed to the LC50 and LC30 of imidacloprid and thiamethoxam from F0 to F4 generations to evaluate the activities of peroxidase, pyruvate kinase, and trehalase using microassay. We found that peroxidase and pyruvate kinase activities in soybean aphids increased rapidly, first to peak and then decreased slowly generation by generation under imidacloprid and thiamethoxam stress. In contrast, the trehalase activity was significantly decreased in F1 to F5 generations when treated with the LC50 and LC30 and imidacloprid and thiamethoxam compared to control. In addition, the Enzyme-Linked Immunosorbent Assay (ELISA) was used to monitor the changes in molting and juvenile hormone expressions of the soybean aphids in each generation (F1-F5). The expression of juvenile hormone in soybean aphids was increased significantly in each generation under continuous stress of imidacloprid and thiamethoxam LC50 imidacloprid and LC50 thiamethoxam inhibited the expression of molting hormones in soybean aphids of each generation. LC30 imidacloprid or LC30 thiamethoxam significantly stimulated the expression of molting hormone in the 1st and 2nd instar nymphs in each generation. In this paper, the differences in antioxidant regulation, energy metabolism intensity, and hormone expression of multi-generation soybean aphids were monitored under continuous stress of imidacloprid and thiamethoxam. Our results revealed the effects of continuous insecticide stress on the main endogenous substances. Further, they clarified the regulation rules of resistance in soybean aphids, providing a reference for efficient control with imidacloprid and thiamethoxam.
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Trehalase inhibition by validamycin A may be a promising target to design new fungicides and insecticides. PEST MANAGEMENT SCIENCE 2021; 77:3832-3835. [PMID: 33786994 DOI: 10.1002/ps.6382] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
The introduction of insecticides and fungicides in agriculture has improved crop yields and, consequently, the quality of life for many people, especially in what is widely considered as the 'first world'. However, the indiscriminate use of dangerous chemical insecticides has led to pest resistance, human and animal poisoning and environmental pollution. Biochemical and genetic evidence concludes that the non-reducing disaccharide trehalose plays an essential role in the pathobiology of many insects and fungi. Both organisms share identical pathway for trehalose biosynthesis (the TPS/TPP pathway), while a high degree of homology in their trehalose hydrolysis capacity (trehalase activities) has also been demonstrated. In the search for new, effective and environmentally sustainable compounds, a set of trehalase inhibitors has emerged as a potentially interesting antifungal and insecticidal target. In particular, the trehalose analogue, Validamycin A, which has a strong inhibitory effect on several trehalases, has been successfully introduced for the treatment of various diseases caused by insects and fungi. Herein, we review the main features of the specific interaction between Validamycin A and trehalase as well as the expected advantages of the applications based on trehalase inhibition as insecticides and fungicides. © 2021 Society of Chemical Industry.
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Co-purification of glucanase with acid trehalase–invertase aggregate in Saccharomyces cerevisiae. Biotechnol Lett 2007; 30:299-304. [PMID: 17899389 DOI: 10.1007/s10529-007-9535-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2007] [Revised: 08/30/2007] [Accepted: 08/31/2007] [Indexed: 11/27/2022]
Abstract
An electrophoretically homogenous aggregate of acid trehalase, invertase and an unidentified 37-41 kDa protein was purified from Saccharomyces cerevisiae. N-terminal analysis of the protein revealed an amino acid sequence identical to that of Bgl2p (endo-beta-l,3-glucanase) of S. cerevisiae. Acid trehalase activity with co-eluted glucanase activity was observed from late growth phase through early stationary phase. Pools with high percentage of Bgl2p corresponded with high acid trehalase activity. A BGL2 deletion strain had lower acid trehalase activity. The 37-41 kDa protein represents Bgl2p which, besides imparting glucanase activity, could also be acting as a regulator for the acid trehalase activity by association in the enzyme aggregate.
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The transmembrane domain of acid trehalase mediates ubiquitin-independent multivesicular body pathway sorting. Mol Biol Cell 2007; 18:2511-24. [PMID: 17475771 PMCID: PMC1924822 DOI: 10.1091/mbc.e06-11-0995] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Trehalose serves as a storage source of carbon and plays important roles under various stress conditions. For example, in many organisms trehalose has a critical function in preserving membrane structure and fluidity during dehydration/rehydration. In the yeast Saccharomyces cerevisiae, trehalose accumulates in the cell when the nutrient supply is limited but is rapidly degraded when the supply of nutrients is renewed. Hydrolysis of trehalose in yeast depends on neutral trehalase and acid trehalase (Ath1). Ath1 resides and functions in the vacuole; however, it appears to catalyze the hydrolysis of extracellular trehalose. Little is known about the transport route of Ath1 to the vacuole or how it encounters its substrate. Here, through the use of various trafficking mutants we showed that this hydrolase reaches its final destination through the multivesicular body (MVB) pathway. In contrast to the vast majority of proteins sorted into this pathway, Ath1 does not require ubiquitination for proper localization. Mutagenesis analyses aimed at identifying the unknown targeting signal revealed that the transmembrane domain of Ath1 contains the information sufficient for its selective sequestration into MVB internal vesicles.
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Extensive extracellular matrix depositions in active multiple sclerosis lesions. Neurobiol Dis 2006; 24:484-91. [PMID: 17005408 DOI: 10.1016/j.nbd.2006.08.005] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2006] [Revised: 07/06/2006] [Accepted: 08/14/2006] [Indexed: 10/24/2022] Open
Abstract
In the central nervous system, basement membrane (BM) constituents are predominantly associated with the vasculature. However, under inflammatory conditions, the expression of BM components may alter. Here, we investigated the distribution of several BM components, including laminin, collagen type IV and heparan sulfate proteoglycans in various multiple sclerosis (MS) lesions. We observed irregular and discontinuous BMs in active lesions. Throughout active MS lesions, we found dense networks of BM proteins, which were surprisingly not associated with the cerebrovasculature. These striking parenchymal networks were not observed in chronic inactive MS lesions and brains of non-neurological controls. In addition, we studied the distribution of transforming growth factor-beta1 (TGF-beta1), since it is known as a major modulator of ECM production. Leukocytes, in particular CD68-positive macrophages, expressed high levels of TGF-beta1 and were located in close proximity to parenchymal BM deposits in the MS lesions. We postulate that these BM networks may play a role in the further recruitment of inflammatory cells and form a barrier for axonal regeneration.
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Antisense-mediated inhibition of acid trehalase (ATH1) gene expression promotes ethanol fermentation and tolerance in Saccharomyces cerevisiae. Biotechnol Lett 2006; 27:1855-9. [PMID: 16328979 DOI: 10.1007/s10529-005-3910-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Revised: 08/02/2005] [Accepted: 09/23/2005] [Indexed: 10/25/2022]
Abstract
Acid trehalase gene (ATH1) expression was decreased using the antisense-RNA technique in Saccharomyces cerevisiae. The 500 bp DNA fragments containing anti-ATH1 gene between +1 and +500 were amplified using PCR and fused to yeast ADH1, CYC1 and ATH1 promoters. Yeast cells harboring the recombinant plasmids had a low activity of acid trehalase and promoted ethanol fermentation compared to the control yeast cells harboring the vector plasmid only. The recombinant yeast had a high viability with 8% (v/v) ethanol.
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Abstract
Hill, E. P. (University of Michigan, Ann Arbor), and A. S. Sussman. Development of trehalase and invertase activity in Neurospora. J. Bacteriol. 88:1556-1566. 1964.-The levels of trehalase and invertase found during the development of Neurospora have been studied. Invertase activity is highest in the mycelium after growth has been completed, whereas the most trehalase activity is found in ungerminated conidia. Both enzymes show the least activity in the ascospore. Although the specific activity of trehalase varies no more than 3-fold during the spore stages, there is a 60-fold change in the mycelium. Similar but less pronounced variations in the specific activity of invertase in the mycelium occur. The lowest ratios of invertase to trehalase activity in the soluble fraction are found in conidia and ascospores, except in dormant ascospores where the ratio approaches that of older mycelium. Similar results are obtained for the enzymes in the wall fraction, except for dormant and newly activated ascospores. Moreover, the walls of young mycelium appear to have relatively more trehalase than is found at all other times. The activities of both enzymes vary about 20-fold in the wall fraction, but invertase activity fluctuates more widely than that of trehalase. Invertase activity always exceeds that of trehalase, and the cytoplasmic fraction contains more activity than that of the wall. These results are shown to contradict the hypothesis that trehalase and invertase activities are coordinately controlled. Finally, the role of trehalase in the activation of ascospores is considered in the light of these results.
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[CONTRIBUTIONS TO THE BIOCHEMISTRY OF THE SILKWORM. XXVII. TREHALOSE, TREHALASE AND MOLTING]. ACTA ACUST UNITED AC 1996; 71:566-76. [PMID: 14048763 DOI: 10.3109/13813456309092176] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
Among sulfated polysaccharides, those in the tunic of ascidians are unique: their major constituent sugar is galactose, which occurs exclusively in the L-enantiomeric form. Incorporation of D-[14C]glucose into tunic slices in vitro revealed that the cells epimerize D-glucose into L-galactose during biosynthesis of the sulfated polysaccharides. The interconversion of these two sugars involves exchange of hydrogen atoms at the epimerization sites with protons of the medium. Tunic cells also synthesize trehalose, although this disaccharide is not a prominent constituent of the tissue. Pulse-chase experiments using D-[14C]glucose reveal that incorporation of label into trehalose precedes the synthesis of the sulfated L-galactan. In addition, the loss of label from trehalose coincides with the appearance of label in the sulfated L-galactan. Based on these results, we speculate that trehalose in the ascidian tunic may be a precursor of the sulfated L-galactan.
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A simple method for the detetction and determination trehalose by spot elution paper chromatography. J Chromatogr A 1975; 111:466-9. [PMID: 1159026 DOI: 10.1016/s0021-9673(00)99306-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Disaccharides in the nutrition of Trichinella spiralis. J Parasitol 1974; 60:887-9. [PMID: 4430958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Trehalase deficiency in a family. Gastroenterology 1973; 65:130-3. [PMID: 4737205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Metabolism of trehalose in Euglena gracilis. I. Partial purification and some properties of trehalose phosphorylase. J Biol Chem 1972; 247:3223-8. [PMID: 4623846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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[Asymmetric derivatives of trehalose. II. Synthesis, conformation and trehalase affinity of 6-deoxy- , -trehalose]. Carbohydr Res 1971; 20:421-6. [PMID: 5152116 DOI: 10.1016/s0008-6215(00)81400-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Trehalose synthesis during differentiation in Dictyostelium discoideum. I. Analysis and predictions by computer simulation. J Biol Chem 1971; 246:5335-9. [PMID: 5094673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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Studies on the spatial relationship between intestinal disaccharidases and the phlorizin-sensitive transport of glucose. Arch Biochem Biophys 1971; 144:423-7. [PMID: 5117533 DOI: 10.1016/0003-9861(71)90495-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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PURIFICATION AND PROPERTIES OF BAKERS' YEAST TREHALASE. J Biol Chem 1964; 239:1671-3. [PMID: 14213332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
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[ Trehalase in animal and human tissues]. VOPROSY MEDITSINSKOI KHIMII 1963; 9:214-6. [PMID: 13931631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
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[Demonstration of trehalase in human serum]. BULLETIN DE L'ACADEMIE NATIONALE DE MEDECINE 1962; 146:599-602. [PMID: 14023431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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A gene affecting the repression of invertase and trehalase in Neurospora. Arch Biochem Biophys 1962; 96:468-74. [PMID: 14473052 DOI: 10.1016/0003-9861(62)90322-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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[Comparative study of the trehalases of yeast. Plantago ovata, and the cockchafer]. BULLETIN DE LA SOCIETE DE CHIMIE BIOLOGIQUE 1962; 44:735-43. [PMID: 14023435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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The purification and properties of trehalase. J Biol Chem 1958; 230:691-8. [PMID: 13525386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
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[Remarks on the subject of trehalase]. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L'ACADEMIE DES SCIENCES 1953; 236:2451-3. [PMID: 13067372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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