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Sarkar S, Choudhury P, Dinda S, Das PK. Tailor-Made Self-Assemblies from Functionalized Amphiphiles: Diversity and Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10449-10468. [PMID: 29575902 DOI: 10.1021/acs.langmuir.8b00259] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The objective of this feature article is to coalesce our recent advancements on different expressions of tailor-made supramolecular self-assemblies and to explore them as a function of molecular architecture. In the last decade, we have developed a library of elegant and simple functional amphiphilic small molecules, which have very interesting abilities to form diverse manifestations of supramolecular self-assemblies such as micelles, reverse micelles, vesicles, fibers, supramolecular gels, and so on. Each of the expressions of the self-aggregated structures has its individual prominence and finds important applications in the fields of chemistry, physics, biology, and others. In this feature article, the major emphasis is mostly on how to attain precise control over the development of various well-defined supramolecular self-assemblies through the judicious design of low-molecular-weight amphiphiles. By tuning only the functional moieties of the amphiphilic structure, diverse supramolecular architectures can be constructed with task-specific applications. We expect that this article will provide a general and conceptual demonstration of various approaches to the development of different functional supramolecular systems and their prospective applications in numerous domains.
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Affiliation(s)
- Saheli Sarkar
- Department of Biological Chemistry , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032 , India
| | - Pritam Choudhury
- Department of Biological Chemistry , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032 , India
| | - Soumik Dinda
- Department of Biological Chemistry , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032 , India
| | - Prasanta Kumar Das
- Department of Biological Chemistry , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032 , India
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Pfluck AC, de Barros DP, Fonseca LP, Melo EP. Stability of lipases in miniemulsion systems: Correlation between secondary structure and activity. Enzyme Microb Technol 2018; 114:7-14. [DOI: 10.1016/j.enzmictec.2018.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 03/11/2018] [Accepted: 03/12/2018] [Indexed: 12/18/2022]
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Lu J, Wang P, Ke Z, Liu X, Kang Q, Hao L. Effect of metal ions on the enzymatic hydrolysis of hemp seed oil by lipase Candida sp. 99–125. Int J Biol Macromol 2018; 114:922-928. [DOI: 10.1016/j.ijbiomac.2018.03.168] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/12/2018] [Accepted: 03/27/2018] [Indexed: 11/30/2022]
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Sarkar S, Das K, Das PK. Hydrophobically Tailored Carbon Dots toward Modulating Microstructure of Reverse Micelle and Amplification of Lipase Catalytic Response. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3890-3900. [PMID: 27035762 DOI: 10.1021/acs.langmuir.5b04750] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This article delineates the modulation of microstructure of cationic reverse micelle utilizing hydrophobically modified carbon dots (CDs) with varying surface functionalizations. Citric acid was used as the source of the carbon core, and Na-salt of glycine, glycine, Na-salt of 11-aminoundecanoic acid, 11-aminoundecanoic acid, and n-hexadecylamine were used for the surface fabrication of CDs to produce CD 1s, CD 1a, CD 2s, CD 2a, and CD 3, respectively. All these CDs having dimension of 5-7 nm were characterized by spectroscopic and microscopic techniques. The hydrodynamic diameter of cetyltrimethylammonium bromide (CTAB) reverse micelle (CTAB/isooctane/n-hexanol/water) at z ([cosurfactant]/[surfactant]) = 6.4 and W0 ([water]/[surfactant]) = 44 is around 15-20 nm. Interestingly, the size of the water-in-oil (w/o) microemulsions dramatically increased up to 120-200 nm upon doping hydrophobic surface functionalized CD 2a and CD 3. This is possibly due to change in the micellar exchange dynamics and reorganization of the micellar aggregates via hydrophobic interaction between surfactant (CTAB) tail and hydrophobic surface modifier of the carbon dots. However, no alteration in the size of reverse micelles was noted in the presence of carbon dots CD 1s, CD 1a, and CD 2s. Spectroscopic and microscopic investigations confirmed that the hydrophobic CD 2a and CD 3 were localized at the interface of reverse micelles whereas CD 1s, CD 1a, and CD 2s were possibly located in the water pool (away from interface). The activity of Chromobacterium viscosum lipase encapsulated within CD 3 and CD 2a doped significantly large CTAB reverse micelles showed remarkable improvement (3.7-fold and 3.4-fold) in its catalytic response. However, hydrophilic carbon dots CD 1s and CD 2s as well as moderately hydrophobic CD 1a had no significant effect on the microstructure of reverse micelles as well as on the lipase activity.
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Affiliation(s)
- Saheli Sarkar
- Department of Biological Chemistry, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032, India
| | - Krishnendu Das
- Department of Biological Chemistry, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032, India
| | - Prasanta Kumar Das
- Department of Biological Chemistry, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032, India
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Talukder MMR, Shiong SCS. Stabilization of Chromobacterium viscosum Lipase (CVL) Against Ultrasound Inactivation by the Pretreatment with Polyethylene Glycol (PEG). Appl Biochem Biotechnol 2015; 177:1742-52. [PMID: 26373941 DOI: 10.1007/s12010-015-1850-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 09/09/2015] [Indexed: 11/30/2022]
Abstract
Although ultrasound has been used to accelerate many enzymatic reactions, the low stability of enzymes in such a system still remains a critical issue, limiting its industrial application. Here, we have reported that polyethylene glycol (PEG) pretreatment stabilized Chromobacterium viscosum lipase (CVL) in ultrasound-assisted water-isooctane emulsion. PEGs of different molecular weights and concentrations were used to pretreat CVL, and the pretreated lipase activities for olive oil hydrolysis were investigated at different ultrasonic powers. The best result was attained with PEG400 at 100 mg/ml for a lipase concentration of 0.02 mg/ml and an ultrasonic power of 106 W. The half-life time of PEG400-treated lipase at 106 W was 54 min, a 27-fold higher than that attained using untreated lipase. Circular dichroism (CD) spectra suggested that PEG increased the rigidity of CVL structure, which favored the lipase stability against ultrasound inactivation. These results have important implications for the exploitation of ultrasound in biocatalytic process.
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Affiliation(s)
- Md Mahabubur Rahman Talukder
- Institute of Chemical and Engineering Sciences, Singapore, Singapore. .,Department of Industrial Biotechnology, Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore.
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Hong SC, Park KM, Son YH, Jung HS, Kim K, Choi SJ, Chang PS. AOT/isooctane reverse micelles with a microaqueous core act as protective shells for enhancing the thermal stability of Chromobacterium viscosum lipase. Food Chem 2015; 179:263-9. [DOI: 10.1016/j.foodchem.2015.01.120] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/06/2015] [Accepted: 01/27/2015] [Indexed: 11/17/2022]
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Das K, Maiti S, Das PK. Probing enzyme location in water-in-oil microemulsion using enzyme-carbon dot conjugates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2448-59. [PMID: 24528191 DOI: 10.1021/la403835h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This article delineates the formation and characterization of different enzyme-carbon dot conjugates in aqueous medium (pH = 7.0). We used soybean peroxidase (SBP), Chromobacterium viscosum (CV) lipase, trypsin, and cytochrome c (cyt c) for the formation of conjugate either with cationic carbon dot (CCD) or anionic carbon dot (ACD) depending on the overall charge of the protein at pH 7.0. These nanobioconjugates were used to probe the location of enzymes in water-in-oil (w/o) microemulsion. The size of the synthesized water-soluble carbon dots were of 2-3 nm with distinctive emission property. The formation of enzyme/protein-carbon dot conjugates in aqueous buffer was confirmed via fluorescence spectroscopy and zeta potential measurement, and the structural alteration of enzyme/protein was monitored by circular dichroism spectroscopy. Biocatalytic activities of protein/enzymes in conjugation with carbon dots were found to be decreased in aqueous phosphate buffer (pH 7.0, 25 mM). Interestingly, the catalytic activity of the nanobioconjugates of SBP, CV lipase, and cyt c did not reduce in cetyltrimethylammonium bromide (CTAB)-based reverse micelle. It indicates different localization of carbon dots and the enzymes inside the reverse micelle. The hydrophilic carbon dots always preferred to be located in the water pool of reverse micelle, and thus, enzyme must be located away from the water pool, which is the interface. However, in case of trypsin-carbon dot conjugate, the enzyme activity notably decreased in reverse micelle in the presence of carbon dot in a similar way that was observed in water. This implies that trypsin and carbon dots both must be located at the same place, which is the water pool of reverse micelle. Carbon dot induced deactivation was not observed for those enzymes which stay away from the water pool and localized at the interfacial domain while deactivation is observed for those enzymes which reside at the water pool. Thus, the location of enzymes in the microdomain of w/o microemulsion can be predicted by comparing the activity profile of enzyme-carbon dot conjugate in water and w/o microemulsion.
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Affiliation(s)
- Krishnendu Das
- Department of Biological Chemistry, Indian Association for the Cultivation of Science Jadavpur , Kolkata 700 032, India
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Santambrogio C, Sasso F, Natalello A, Brocca S, Grandori R, Doglia SM, Lotti M. Effects of methanol on a methanol-tolerant bacterial lipase. Appl Microbiol Biotechnol 2013; 97:8609-18. [DOI: 10.1007/s00253-013-4712-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 12/20/2012] [Accepted: 01/12/2013] [Indexed: 01/20/2023]
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Sayed ET, Saito Y, Tsujiguchi T, Nakagawa N. Catalytic activity of yeast extract in biofuel cell. J Biosci Bioeng 2012; 114:521-5. [DOI: 10.1016/j.jbiosc.2012.05.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 04/19/2012] [Accepted: 05/25/2012] [Indexed: 11/27/2022]
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Purification and characterization of a new alkali-thermostable lipase from Staphylococcus aureus isolated from Arachis hypogaea rhizosphere. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.02.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Fu D, Li C, Lu J, Rahman AU, Tan T. Relationship between thermal inactivation and conformational change of Yarrowia lipolytica lipase and the effect of additives on enzyme stability. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcatb.2010.04.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Pavlidis IV, Tzafestas K, Stamatis H. Water-in-ionic liquid microemulsion-based organogels as novel matrices for enzyme immobilization. Biotechnol J 2010; 5:805-12. [DOI: 10.1002/biot.201000052] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Pavlidis IV, Gournis D, Papadopoulos GK, Stamatis H. Lipases in water-in-ionic liquid microemulsions: Structural and activity studies. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2009.03.007] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gangadhara, Ramesh Kumar P, Prakash V. The Stabilizing Effects of Polyols and Sugars on Porcine Pancreatic Lipase. J AM OIL CHEM SOC 2009. [DOI: 10.1007/s11746-009-1408-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Invernizzi G, Casiraghi L, Grandori R, Lotti M. Deactivation and unfolding are uncoupled in a bacterial lipase exposed to heat, low pH and organic solvents. J Biotechnol 2009; 141:42-6. [DOI: 10.1016/j.jbiotec.2009.02.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2008] [Revised: 02/19/2009] [Accepted: 02/25/2009] [Indexed: 10/21/2022]
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Mala JGS, Takeuchi S. Understanding structural features of microbial lipases--an overview. ANALYTICAL CHEMISTRY INSIGHTS 2008; 3:9-19. [PMID: 19609386 PMCID: PMC2701168 DOI: 10.4137/aci.s551] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The structural elucidations of microbial lipases have been of prime interest since the 1980s. Knowledge of structural features plays an important role in designing and engineering lipases for specific purposes. Significant structural data have been presented for few microbial lipases, while, there is still a structure-deficit, that is, most lipase structures are yet to be resolved. A search for 'lipase structure' in the RCSB Protein Data Bank (http://www.rcsb.org/pdb/) returns only 93 hits (as of September 2007) and, the NCBI database (http://www.ncbi.nlm.nih.gov) reports 89 lipase structures as compared to 14719 core nucleotide records. It is therefore worthwhile to consider investigations on the structural analysis of microbial lipases. This review is intended to provide a collection of resources on the instrumental, chemical and bioinformatics approaches for structure analyses. X-ray crystallography is a versatile tool for the structural biochemists and is been exploited till today. The chemical methods of recent interests include molecular modeling and combinatorial designs. Bioinformatics has surged striking interests in protein structural analysis with the advent of innumerable tools. Furthermore, a literature platform of the structural elucidations so far investigated has been presented with detailed descriptions as applicable to microbial lipases. A case study of Candida rugosa lipase (CRL) has also been discussed which highlights important structural features also common to most lipases. A general profile of lipase has been vividly described with an overview of lipase research reviewed in the past.
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Affiliation(s)
- John Geraldine Sandana Mala
- SANDANA FLORALS, Module-7, Golden Jubilee Biotech Park for Women Society, In SIPCOT-IT Park, Old Mahabalipuram Road, Siruseri, Navalur P.O., Kanchipuram District-603103, Tamilnadu, India
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Talukder MMR, Tamalampudy S, Li CJ, Yanglin L, Wu J, Kondo A, Fukuda H. An improved method of lipase preparation incorporating both solvent treatment and immobilization onto matrix. Biochem Eng J 2007. [DOI: 10.1016/j.bej.2006.10.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Stobiecka A. Acrylamide-quenching of Rhizomucor miehei lipase. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2005; 80:9-18. [PMID: 15963433 DOI: 10.1016/j.jphotobiol.2005.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2004] [Revised: 02/11/2005] [Accepted: 02/14/2005] [Indexed: 10/25/2022]
Abstract
Steady-state and time-resolved fluorescence-quenching measurements have been performed to study multitryptophan lipase from filamentous fungus Rhizomucor miehei. Using the steady-state acrylamide fluorescence quenching data and the fluorescence-quenching-resolved-spectra (FQRS) method, the total emission spectrum of native ("closed-lid") lipase has been decomposed into two distinct spectral components accessible to acrylamide. According to FQRS analysis, more quenchable component has a maximum of fluorescence emission at about 352 nm whereas less quenchable component emits at about 332 nm. The redder component participates in about 60-64% of the total lipase fluorescence and may be characterized by the dynamic and static quenching constants equal to K(1) = 3.75 M(-1) and V(1) = 1.12 M(-1), respectively. The bluer component is quenchable via dynamic mechanism with K(2) = 1.97 M(-1). Significant difference in the values of acrylamide bimolecular rate quenching constants estimated for redder and bluer component (i.e., k(q) = 1.2 x 10 (9) M(-1)s (-1) vs. k(q) = 4.3 x 10(8) M(-1) s(-1), respectively), suggests that tryptophan residues in fungal lipase are not uniformly exposed to the solvent.
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Abstract
Both high temperature and high hydrostatic pressure induce irreversible deactivation of enzymes. They enable the enzyme's thermodynamic parameters to be determined and are used to study the mechanisms involved in biochemical systems. The effect of these two factors on the stability of Rhizomucor miehei lipase have been investigated. The stability criterion used was residual hydrolytic activity of the lipase. Experimental and theoretical parameters, obtained by linear regression analysis, were compared with theoretical kinetics in order to validate the series-type inactivation model. The lipase of R. miehei was deactivated by either thermal or pressure treatment. Moreover conformational studies made by fluorescence spectroscopy suggest that the conformational changes induced by pressure were different from those induced by temperature. In addition they show that after thermal deactivation there were less intermolecular hydrogen bonded structures formed than was the case for deactivation by high pressure.
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Affiliation(s)
- Marilyne Noel
- Institut National des Sciences Appliquées (INSA), Centre de Bioingénierie Gilbert Durand, 135 Avenue de Rangueil, 31077 Toulouse Cedex 4, France
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Acharya P, Rao NM. Stability studies on a lipase from Bacillus subtilis in guanidinium chloride. JOURNAL OF PROTEIN CHEMISTRY 2003; 22:51-60. [PMID: 12739898 DOI: 10.1023/a:1023067827678] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Lipase from Bacillus subtilis is a "lidless" lipase that does not show interfacial activation. Due to exposure of the active site to solvent, the lipase tends to aggregate. We have investigated the solution properties and unfolding of the lipase in guanidinium chloride (GdmCl) to understand its aggregation behavior and stability. Dynamic light scattering (DLS), near- and far-UV circular dichroism, activity and intrinsic fluorescence of lipase suggest that the protein undergoes unfolding between 1 M and 2 M GdmCl. The polarity sensitive dye, 1,1',-bis-(4anilino)naphthalene-5,5"-disulfonic acid (bis-ANS), a probe for hydrophobic pockets, binds cooperatively to the native lipase. An intermediate populated in 1.75 M GdmCl that strongly binds bis-ANS was identified. Tendency of the native protein to aggregate in solution and specific binding to bis-ANS confirms that the lipase has exposed hydrophobic pockets and this surface hydrophobicity strongly influences the unfolding pathway of the lipase in GdmCl.
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Affiliation(s)
- Priyamvada Acharya
- Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500 007, India
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