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Wyszukujesz frazę "protease" wg kryterium: Temat


Tytuł:
New proteases of the chloroplast envelope – what do they do there?
Autorzy:
Adam, Z.
Powiązania:
https://bibliotekanauki.pl/articles/80681.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
protease
chloroplast
thylakoid
proteomics
allene oxide synthase
jasmonic acid
serine protease
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of enzymatic fungal activity in the food industry - review
Autorzy:
Drozłowska, Emilia
Powiązania:
https://bibliotekanauki.pl/articles/1076386.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
amylases
enyzmes
fungi
laccase
protease
Opis:
Enzymes are increasingly used in the food industry, due to the fact that they allow to streamline many processes. They catalyse processes that require energy and are long-lasting. Mushrooms produce hydrolytic enzymes such as proteases, lipases and amylases. These enzymes are used in winemaking, brewing, confectionery and cheese production. Attempts have also been made to use paper industry enzymes such as laccase in the wine industry. The production of enzymes of animal origin is an expensive and complicated process, which is why they were interested in their production from microorganisms. This article attempts to review the current state of knowledge on the use of fungal enzymes in the food industry.
Źródło:
World Scientific News; 2019, 116; 222-229
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proteolytic activity in the midgut of the crimson speckled moth Utethesia pulchella L. (lepidoptera: arctiidae)
Autorzy:
Ajamhassani, M.
Zibaee, A.
Sendi, J.J.
Askary, H.
Farrar, N.
Powiązania:
https://bibliotekanauki.pl/articles/961656.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
utethesia pulchalle
midgut
protease
inhibitor
Opis:
Samples were prepared from the midgut of 4th instar larvae of the crimson speckled moth Utethesia pulchella L. to find proteolytic activity and properties. Result revealed the presence of high proteolytic activity in the midgut when taking into account specific proteinases including trypsin-like, chymotrypsin-like, elastase and two exopeptidase (aminopeptidase and carboxipeptidase). The optimal pH of general protease was 8 and 7 when using azocasein and hemoglobin as general substrates, respectively. The optimal temperature of the total proteolytic activity in the midgut of U. pulchella was 25°C and 30°C when using azocasein and hemoglobin, respectively. Proteolytic activity was inhibited significantly by soybean trypsin inhibitor (SBTI), phenylmethylsulfonyl fluoride (PMSF), trypsin inhibitor (TLCK), chymotrypsin inhibitor (TPCK) and Phenanthroline. These results provide evidences for the presence of serine proteinases as the major proteases in the midgut of U. pulchella; a key rangeland pest in warm climates. The interaction between digestive proteases and protease inhibitors have potentially important consequences for pest management programs.
Źródło:
Journal of Plant Protection Research; 2012, 52, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydroxyapatite as a support in protease immobilization process
Autorzy:
Zdarta, J.
Budzinska, K.
Kolodziejczak-Radzimska, A.
Klapiszewski, Ł.
Siwinska-Stefanska, K.
Bartczak, P.
Piasecki, A.
Maciejewski, H.
Jesionowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/110452.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hydroxyapatite
enzyme immobilization
protease
physicochemical characteristic
Opis:
Hydroxyapatite is used as a matrix for immobilization of protease from Aspergillus oryzae by a process of adsorption. The matrix obtained has the surface area of 26 m2/g and particles in the shape of flakes of diameters no greater than 650 nm. The efficiency of the proposed method was confirmed by the Fourier transform infrared spectroscopy, elemental analysis and by analysis of parameters of the pore structure of matrix and products after immobilization. On the basis of the Bradford method it was found that the greatest amount of enzyme (132 mg/g) was immobilized from a solution of initial enzyme concentration of 7 mg/cm3 after 24 h of the process.
Źródło:
Physicochemical Problems of Mineral Processing; 2015, 51, 2; 633-646
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Purification and characterization of a novel metalloprotease from fruiting bodies of Oudemansiella radicata
Autorzy:
Geng, Xueran
Te, Rigen
Tian, Guoting
Zhao, Yongchang
Zhao, Liyan
Wang, Hexiang
Ng, Tzi
Powiązania:
https://bibliotekanauki.pl/articles/1038592.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
edible mushroom
Oudemansiella radicata
protease
purification
Opis:
In this study, a 39-kDa metalloprotease was purified from a rare edible mushroom with health-promoting activities, Oudemansiella radicata, using a purification protocol which entailed anion exchange chromatography on DEAE-cellulose and Q-Sepharose columns and gel filtration by fast protein liquid chromatography on a Superdex 75 column. Some peptide sequences were obtained by LC-MS/MS analysis and one of the sequences, DAWIQADVNR, manifested 90% identity to Coprinopsis cinerea metalloprotease. The optimal reaction pH and temperature for Oudemansiella radicata protease were pH 7.0 and 50°C, respectively. The protease was purified 79-fold and demonstrated a specific protease activity of 2.42 U/mg. The Km of the purified protease for the casein substrate was 0.65 mg/mL at pH 7.0 and 50°C. The activity of the protease was inhibited by Cd2+, Hg2+, Cu2+, Pb2+ and Fe3+ ions, but was enhanced by K+, Mn2+ and Fe2+ ions. The marked suppression of the protease activity by EDTA indicates that the protease is a metalloprotease.
Źródło:
Acta Biochimica Polonica; 2017, 64, 3; 477-483
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The regulatory role of AtDeg5 chloroplast protease in chronological progression of principal growth stages in Arabidopsis thaliana plants
Autorzy:
Baranek, M.
Lucinski, R.
Jackowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/80598.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
serine-type protease
chymotrypsin
thylakoid membrane
photosystem II
protease
chloroplast
Arabidopsis thaliana
ontogenesis
growth stage
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In silico studies of selected xanthophylls as potential candidates against SARS-CoV-2 targeting main protease (Mpro) and papain-like protease (PLpro)
Autorzy:
Karpiński, T.M.
Kwaśniewski, M.
Ożarowski, M.
Alam, R.
Powiązania:
https://bibliotekanauki.pl/articles/2049355.pdf
Data publikacji:
2021
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
protease
papain-like protease
xanthophyll
coronavirus
COVID-19
antiviral activity
koronawirus
pandemia
działanie przeciwwirusowe
projektowanie leków wspomagane komputerowo
Opis:
Introduction: The main protease (Mpro) and the papain-like protease (PLpro) are essential for the replication of SARS-CoV-2. Both proteases can be targets for drugs acting against SARS-CoV-2. Objective: This paper aims to investigate the in silico activity of nine xanthophylls as inhibitors of Mpro and PLpro. Methods: The structures of Mpro (PDB-ID: 6LU7) and PLpro (PDB-ID: 6W9C) were obtained from RCSB Protein Data Bank and developed with BIOVIA Discovery Studio. Active sites of proteins were performed using CASTp. For docking the PyRx was used. Pharmacokinetic parameters of ADMET were evaluated using SwissADME and pkCSM. Results: β-cryptoxanthin exhibited the highest binding energy: –7.4 kcal/mol in the active site of Mpro. In PLpro active site, the highest binding energy had canthaxanthin of –9.4 kcal/mol, astaxanthin –9.3 kcal/mol, flavoxanthin –9.2 kcal/mol and violaxanthin –9.2 kcal/mol. ADMET studies presented lower toxicity of xanthophylls in comparison to ritonavir and ivermectin. Conclusion: Our findings suggest that xanthophylls can be used as potential inhibitors against SARS-CoV-2 main protease and papain-like protease.
Źródło:
Herba Polonica; 2021, 67, 2; 1-8
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The total protein content, protein fractions and proteases activities of drone prepupae of Apis mellifera due to varrosis
Autorzy:
Żółtowska, K.
Lipiński, Z.
Dmitryjuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/2146371.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
protease
protease activity
honey bee
drone prepupa
protein fraction
varrosis
total protein
Varroa destructor
Apis mellifera
protein content
Opis:
The proteins level and activities of acid and alkaline proteases in whole body extracts of drone prepupae of Apis mellifera naturaly infested with Varroa destructor were studied. The infested and a non-infested group did not differ significantly in their total protein content. However, some differences in protein profiles were found. A lack of three protein fractions of moderate and lower molecular weight in infested prepupae was noted. Moreover, some differences in the quantity of protein in most of the fractions were observed. The activity of acid proteases from infested prepupae was lower (p < 0.05) compared with the activity of these proteases from the non-infested one group. The infested drone had higher activity of alkaline proteases than non-infested but this difference was not statisticaly significant.
Źródło:
Wiadomości Parazytologiczne; 2005, 51, 1; 43-47
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The total protein content, protein fractions and proteases activities of drone prepupae of Apis mellifera due to varrosis
Autorzy:
Zoltowska, K
Lipinski, Z.
Dmitryjuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/840749.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
protease
protease activity
honey bee
drone prepupa
protein fraction
varrosis
total protein
Varroa destructor
Apis mellifera
protein content
Opis:
The proteins level and activities of acid and alkaline proteases in whole body extracts of drone prepupae of Apis mellifera naturaly infested with Varroa destructor were studied. The infested and a non-infested group did not differ significantly in their total protein content. However, some differences in protein profiles were found. A lack of three protein fractions of moderate and lower molecular weight in infested prepupae was noted. Moreover, some differences in the quantity of protein in most of the fractions were observed. The activity of acid proteases from infested prepupae was lower (p < 0.05) compared with the activity of these proteases from the non-infested one group. The infested drone had higher activity of alkaline proteases than non-infested but this difference was not statisticaly significant.
Źródło:
Annals of Parasitology; 2005, 51, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The activity of cathepsin D and alpha-1 antitrypsin in hip and knee osteoarthritis
Autorzy:
Olszewska-Slonina, Dorota
Matewski, Dariusz
Jung, Stanislaw
Olszewski, Krzysztof
Czajkowski, Rafal
Braszkiewicz, Joanna
Wozniak, Alina
Kowaliszyn, Bogna
Powiązania:
https://bibliotekanauki.pl/articles/1039618.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
protease
cathepsin D
alpha 1-antitrypsin
antiprotease
cartilage
osteoarthritis
Opis:
The progress of cartilage decay during joint degeneration is not well monitored with biochemical methods. The role of cathepsin D (CAT-D) in articular cartilage deterioration remains unclear. The aim of this study is to assess the activity of CAT-D and alpha-1 antitrypsin (AAT) in blood in patients with hip or knee osteoarthritis. The activity of CAT-D and AAT in blood serum of 40 women and 21 men with hip or knee osteoarthritis was determined before total joint replacement, on the tenth day after surgery, and once in 54 healthy patients. The preoperative activity of CAT-D in patients with osteoarthritis was lower by 53.6% (11.00 ± 4.54 10-2 nM released tyrosine/mg protein/min, P < 0.001) and after surgery by 55.0% (10.67 ± 4.64 10-2 nM released tyrosine/mg protein/min, P < 0.001) when compared to its activity in healthy patients. There was no significant statistical difference between CAT-D activity before the surgery and its activity on the tenth day after it in the analyzed group (P< 0.496). Simultaneously, the preoperative activity of AAT in the OA (osteoarthritis) patients was by 25.5% (0.93 ± 0.32 mg inhibited trypsin/ml blood serum, P < 0.001) and postoperative was by 44.9% higher (1.26 ± 0.36 mg inhibited trypsin/ml blood serum, P < 0.001) than in healthy patients. The low CAT-D activity in osteoarthritis of big joints is associated with a decrease of cartilage cells during the degenerative process. The higher activity of acute phase protein AAT in OA patients' blood serum confirms the inflammatory component in the osteoarthritis process.
Źródło:
Acta Biochimica Polonica; 2013, 60, 1; 99-106
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Screening and characterization of thermo-active enzymes of biotechnological interest produced by thermophilic Bacillus isolated from hot springs in Tunisia
Autorzy:
Thebti, Wajdi
Riahi, Yosra
Gharsalli, Rawand
Belhadj, Omrane
Powiązania:
https://bibliotekanauki.pl/articles/1038787.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
temperature
amylase
protease
cellulase
xylanase
mannanase
Geobacillus
Tunisian hot springs
Opis:
As part of the contribution to the global efforts in research of thermostable enzymes being of industrial interest, we focus on the isolation of thermophilic bacteria from Tunisian hot springs. Among the collection of 161 strains of thermophilic Bacillus isolated from different samples of thermal water in Tunisia, 20% are capable of growing at 100°C and the rest grow at 70°C or above. Preliminary activity tests on media supplemented with enzyme-substrates confirmed that 35 strains produced amylases, 37 - proteases, 43 - cellulases, 31 - xylanases and 37 - mannanases. The study of the effect of temperature on enzyme activity led to determination of the optimal temperatures of activities that vary between 60 and 100°C. Several enzymes were active at high temperatures (80, 90 and 100°C) and kept their activity even at 110°C. Several isolated strains producing enzymes with high optimal temperatures of activity were described for the first time in this study. Both strains B62 and B120 are producers of amylase, protease, cellulase, xylanase, and mannanase. The sequencing of 16S DNA identified isolated strains as Geobacillus kaustophillus, Aeribacillus pallidus, Geobacillus galactosidasus and Geobacillus toebii.
Źródło:
Acta Biochimica Polonica; 2016, 63, 3; 581-587
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
AtDeg2 - a chloroplast protein with dual protease/chaperone activity
Autorzy:
Jagodzik, P.
Adamiec, M.
Jackowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/57301.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
chloroplast protein
protease
proteolytic enzyme
chaperone
enzyme activity
chloroplast
PDZ domain
Opis:
Chloroplast protease AtDeg2 (an ATP-independent serine endopeptidase) is cytosolically synthesized as a precursor, which is imported into the chloroplast stroma and deprived of its transit peptide. Then the mature protein undergoes routing to its functional location at the stromal side of thylakoid membrane. In its linear structure AtDeg2 molecule contains the protease domain with catalytic triad (HDS) and two PDZ domains (PDZ1 and PDZ2). In vivo AtDeg2 most probably exists as a supposedly inactive haxamer, which may change its oligomeric stage to form active 12-mer, or 24-mer. AtDeg2 has recently been demonstrated to exhibit dual protease/chaperone function. This review is focused on the current awareness with regard to AtDeg2 structure and functional significance.
Źródło:
Acta Societatis Botanicorum Poloniae; 2014, 83, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aktywność metaboliczna grzybni trufli letniej Tuber aestivum/Tuber uncinatum Vittad
Metabolic activity of Tuber aestivum/Tuber uncinatum Vittad mycellium
Autorzy:
Jankiewicz, U.
Russel, S.
Bagińska, E.
Hilszczańska, D.
Powiązania:
https://bibliotekanauki.pl/articles/337774.pdf
Data publikacji:
2015
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
celulaza
ksylanaza
lakaza
lipaza
proteaza
Tuber aestivum/uncinatum
cellulase
laccase
lipase
protease
xylanase
Opis:
Celem prezentowanych badań było oznaczenie aktywności enzymów wydzielanych do podłoża przez dwie formy trufli letniej: Tuber aestivum i Tuber uncinatum Vittad. W pracy wykazano, że T. aestivum i T. uncinatum uwalniają do podłoża hodowlanego białka enzymatyczne o aktywności: lakazy, proteazy, lipazy oraz celulazy i ksylanazy. Analiza aktywności enzymatycznej w płynnych hodowlach obu form trufli letniej wykazała znaczne różnice biochemiczne pomiędzy nimi. Obserwowano zdecydowanie większą aktywność zewnątrzkomórkowych enzymów u T. aestivum, szczególnie lakazową i peptydazową. Wyniki badań wskazują na różną swoistość substratową lipaz wydzielanych przez te trufle: T. uncinatum syntetyzuje lipazy wykazujące aktywność tylko do octanu p-nitrofenolu, natomiast T. aestivum – także do palmitynianu p-nitrofenolu. W hodowlach obu form trufli wykryto niewielką aktywność celulolityczną i ksylanolityczną. Ksylanazy i celulazy oraz lakazy wydzielane przez grzybnię obu form tych trufli mogą brać udział w procesie zawiązywania symbiozy mykoryzowej.
Truffle have long been appreciated for their culinary value. However, knowledge about their biochemical activity is still insufficient. Therefore, the aim of this study was to preliminarily assess the enzymatic activity of two forms of summer truffle (Tuber aestivum Vittad.). The results showed that studied fungi of the genus truffle (Tuber spp.) – T. aestivum and T. uncinatum secrete extracellular enzymatic proteins with activities of: laccase, protease lipase, cellulase and xylanase. The high activity of the enzyme was observed between 10th and 20th day of truffle cultivation in liquid culture. Higher activity of all tested enzymes was detected in the culture of T. aestivum. Significant differences observed in the level and kind of enzymatic activity might indicate different metabolic activity of studied forms of summer truffle.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2015, 15, 1; 59-68
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Muscle cathepsins of marine fish and invertebrates
Autorzy:
Kolodziejska, I.
Sikorski, Z.E.
Powiązania:
https://bibliotekanauki.pl/articles/1372835.pdf
Data publikacji:
1995
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
invertebrate
endopeptidase
fish
structure
protease
extracellular matrix
lysosome
exopeptidase
cathepsin C
cathepsin A
muscle protein
myofibrillar protein
lysosomal protease
marine fish
protein
myofibril
muscle cathepsin
food preservation
sarcoplasm
cathepsin L
carboxypeptidase A
cathepsin B
Opis:
Muscle proteases are located mainly in the lysosomes, in the sarcoplasm, and in the extracellular matrix of the connective tissue surrounding each cell. The lysosomal proteases, cathepsins, have optimum activity in the acidic range, although many of them retain high activity also 1 or 2 pH units away from the optimum value. Among the cathepsins there are endopeptidases and exopeptidases. Most cathepsins hydrolyse several proteins of the myofibrils. The major protease of the lysosomes in fish and squid muscles is cathepsin D, an aspartyl endoproteinase. Although it is present in the muscle fibre itself, its generally rather low activity at low temperature limits its significance in tenderization of refrigerated fish of most species. Cathepsin L, a cysteinyl protease, is involved in autolysis and softening in matured chum salmon. Cathepsin B, a cysteinyl carboxypeptidase, is capable to attack also some myofibrillar proteins. Cathepsin A or carboxypeptidase A, and cathepsin C, a dipeptidyl hydrolase and dipeptidyl transferase, contribute to the hydrolysis of muscle proteins in a concerted action with the other cathepsins.
Źródło:
Polish Journal of Food and Nutrition Sciences; 1995, 04, 3; 3-10
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enzymatic activity of actinomycetes from the genus Streptomyces isolated from the bulk soil and rhizosphere of the Pinus sylvestris
Autorzy:
Golinska, P.
Dahm, H.
Powiązania:
https://bibliotekanauki.pl/articles/41609.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
enzyme activity
Actinomycetes
Streptomyces
isolation
bulk soil
forest soil
rhizosphere
Pinus sylvestris
chitinase
protease
pectinase
cellulase
Opis:
The enzymatic activity (chitinolytic, proteolytic, pectolytic andcellulolytic) of twenty strains of Streptomyces isolated from soil and rhizosphere of Scots pine was analyzed. Most strains produced chitinases, catalyzing the degradation of chitin, the main component of fungal cell walls including fungi pathogenic for plants. This activity was about 4 times higher in the presence of Fusariumoxysporum than Rhizoctonia solani mycelium or chitin flakes. The number of the proteolytic strains was also significant. In general, rhizosphere and soil organisms synthesizedcomparable amounts of these enzymes. Over half of the analyzed Streptomyces strains produced pectolytic enzymes (polygalacturonase, pectin lyase and pectate lyase). This property was more common among rhizosphere than among soil strains. The Streptomyces strains also showedcellulolytic activity (endocellulases, exocellulases) – enzymes decomposing basic components of cell walls of plant and lower fungi (cellulose). The cellulolytic activity was differentiated and depended on the Streptomyces strain. Conclusion of our studies is that Streptomyces are the microorganisms more chitinolytic andproteolytic than pectolytic and cellulolytic.
Źródło:
Dendrobiology; 2011, 65
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł

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