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Racanicchi L, Montanucci P, Basta GPP, Pensato A, Conti V, Calafiore R. Effect of all trans retinoic acid on lysosomal alpha-D-mannosidase activity in HL-60 cell: correlation with HL-60 cells differentiation. Mol Cell Biochem 2007; 308:17-24. [PMID: 17899319 DOI: 10.1007/s11010-007-9606-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Accepted: 09/13/2007] [Indexed: 11/28/2022]
Abstract
Human promyelocytic leukemia HL-60 cells represent an in vitro model of acute promyelocytic leukemia (APL), and are inducible to terminally differentiate into morphologically mature granulocytes by incubation with all trans retinoic acid (ATRA). Lysosomal glycohydrolases are involved in the changes of the membrane surface proteins' glycosylation, linked to the metastatic progression potential of neoplastic cells. In particular, it has been demonstrated that the Asn-linked glucidic residues were directly responsible for the metastatic potential, and it is known that the glycohydrolase alpha-D-mannosidase specifically hydrolyze the Asn-linked oligosaccharides. In this report, we present an in vitro study on the ATRA effects on lysosomal glycohydrolases expression and the eventual relationship with the retinoic acid-induced differentiation of HL-60 cells. We have investigated two highly expressed lysosomal glycohydrolases, namely beta-D-hexosaminidase and alpha-D-mannosidase, and showed that they were differently affected by ATRA differentiating action. In particular, due to the specific action on Asn-linked oligosaccharides, we tested alpha-D: -mannosidase enzymatic activity and observed that it was dramatically decreased after ATRA incubation, indicating a relationship with the differentiation state of the cells. These observations may directly be linked with the loss of metastatic progession of differentiated HL-60.
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Affiliation(s)
- Leda Racanicchi
- Department of Internal Medicine (Di.M.I.), Section of Internal Medicine and Endocrine and Metabolic Sciences, University of Perugia, Via E. Dal Pozzo, Perugia 06126, Italy.
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Conzelmann E, Sandhoff K. Glycolipid and glycoprotein degradation. ADVANCES IN ENZYMOLOGY AND RELATED AREAS OF MOLECULAR BIOLOGY 2006; 60:89-216. [PMID: 3310533 DOI: 10.1002/9780470123065.ch3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- E Conzelmann
- Institut für Organische Chemie und Biochemie, Universität Bonn, Federal Republic of Germany
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Jolly RD, Allan FJ, Collett MG, Rozaklis T, Muller VJ, Hopwood JJ. Mucopolysaccharidosis IIIA (Sanfilippo syndrome) in a New Zealand Huntaway dog with ataxia. N Z Vet J 2005; 48:144-8. [PMID: 16032141 DOI: 10.1080/00480169.2000.36181] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AIM To investigate the nature of a progressive ataxia in a New Zealand Huntaway dog. METHODS The affected dog was examined clinically before being humanely killed and necropsied. Selected tissues were submitted to light and electron microscopy and to biochemical analyses. RESULTS The histological lesions were interpreted as indicative of one of the forms of mucopolysaccharidosis type-III (MPS-III), a lysosomal storage disease. Biochemically there was a deficiency of heparan sulphamidase. All the heparan sulphate chains had non-reducing-end glucosamine-N-sulphate residues. CONCLUSION The disease is MPS-IIIA (Sanfilippo syndrome). An autosomal recessive mode of inheritance can be provisionally assumed from the nature of this disease in other species.
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Affiliation(s)
- R D Jolly
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand.
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Robinson AJ, Crawley AC, Hopwood JJ. Over-expression of human lysosomal alpha-mannosidase in mouse embryonic stem cells. Mol Genet Metab 2005; 85:203-12. [PMID: 15979032 DOI: 10.1016/j.ymgme.2005.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2004] [Revised: 03/08/2005] [Accepted: 03/09/2005] [Indexed: 10/25/2022]
Abstract
Alpha-mannosidosis is a lysosomal storage disorder characterised by the lysosomal accumulation of mannose-containing oligosaccharides and a range of pathological consequences, caused by a deficiency of the lysosomal enzyme alpha-mannosidase. One of the major features of alpha-mannosidosis is progressive neurological decline, for which there is no safe and effective treatment. Implantation of stem cells into the central nervous system has been proposed as a potential therapy for these disorders. We report the construction and characterisation of mouse embryonic stem cell lines for the sustained over-expression of recombinant human lysosomal alpha-mannosidase (rhalphaM). Two vectors (involving recombinant human alpha-mannosidase expression driven by either the chicken beta-actin promoter/CMV enhancer or by the elongation factor 1-alpha promoter) were constructed and used to transfect mouse D3 embryonic stem cells. Selected clonal cell lines were isolated and tested to evaluate their expression of recombinant human alpha-mannosidase. Stem cell clones transfected with the chicken beta-actin promoter/CMV enhancer maintained rhalphaM expression levels throughout differentiation. This expression was not markedly elevated above background. In contrast, the vector incorporating the elongation factor 1-alpha promoter facilitated substantial over-expression of alpha-mannosidase when analysed out to 21 days of differentiation in stably transfected cell lines. The highest expressing cell line was found to qualitatively retain a similar differentiation potential to untransfected cells, and to secrete alpha-mannosidase that could mediate a reduction in the level of oligosaccharides stored by human alpha-mannosidosis skin fibroblasts. These results suggest potential for the use of this cell line for investigation of a stem cell therapy approach to treat alpha-mannosidosis.
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Affiliation(s)
- A J Robinson
- Lysosomal Diseases Research Unit, Department of Genetic Medicine, Women's and Children's Hospital, 72 King William Road, North Adelaide, SA 5006, Australia.
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Lau AA, Hemsley KM, Meedeniya A, Hopwood JJ. In vitro characterization of genetically modified embryonic stem cells as a therapy for murine mucopolysaccharidosis type IIIA. Mol Genet Metab 2004; 81:86-95. [PMID: 14741188 DOI: 10.1016/j.ymgme.2003.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The mucopolysaccharidoses (MPS) are lysosomal storage disorders resulting from the impaired catabolism of glycosaminoglycans (GAG). MPS type IIIA patients have dysfunctional sulfamidase enzyme leading to lysosomal storage of the GAG heparan sulfate, severe neurological symptoms including regression in learning, behavioural abnormalities, and premature death. We have engineered mouse D3 embryonic stem (ES) cells to over-express recombinant human sulfamidase. Human sulfamidase was correctly folded and secreted 2h post-labelling as determined by immunoprecipitation and SDS-PAGE analysis of transfected ES cells. Secreted human sulfamidase present in conditioned ES cell media was able to be taken up via mannose-6-phosphate-mediated endocytosis and restored sulfamidase enzyme activity in human MPS IIIA fibroblast cell lines. ES cells underwent directed differentiation to neural precursor populations and were capable of sustained human sulfamidase over-expression at all stages. Additionally, transfected and control cells were proliferative (Ki67+) and expressed several neural markers (nestin, MAP-2, and NF160) as determined by immunofluorescence. These findings suggest the possibility of ES cell-based therapy for the treatment of neurological pathology of MPS IIIA.
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Affiliation(s)
- Adeline A Lau
- Lysosomal Diseases Research Unit, Department of Genetic Medicine, Women's and Children's Hospital, 72 King William Road, North Adelaide, South Australia 5006, Australia.
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Muller VJ, Paton BC, Fietz MJ. An Australasian diagnostic service for the neuronal ceroid lipofuscinoses. Eur J Paediatr Neurol 2001; 5 Suppl A:197-201. [PMID: 11588997 DOI: 10.1053/eipn.2000.0462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The neuronal ceroid lipofuscinoses (NCLs) are a family of related genetic disorders that together are believed to affect one child in every 12,500 births in the USA. Our laboratory has developed a diagnostic service for classical late infantile neuronal ceroid lipofuscinosis (LINCL) by assay of tripeptidyl-peptidase I (TPP-I) activity using the fluorogenic peptide substrate Ala-Ala-Phe aminomethylcoumarin, followed by a screen for three mutations in the CLN2 gene. In addition, we have also begun to offer a limited diagnostic service for the juvenile (JNCL) and infantile (INCL) forms of the disease on the basis of mutation analysis of the CLN3 and CLN1 genes, respectively. Retrospective analysis of Australasian patients with a clinical suspicion of NCL has revealed that six are affected by LINCL, six by JNCL and, to date, two by INCL. Mutation analysis of our LINCL patients has shown that the three screened mutations, namely, the nonsense mutation R208X and the splice mutations IVS5-1 G > C and IVS5-1 G > A, constitute 83% of alleles.
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Affiliation(s)
- V J Muller
- Women's and Children's Hospital, 72 King William Rd, North Adelaide, Australia
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Karageorgos LE, Isaac EL, Brooks DA, Ravenscroft EM, Davey R, Hopwood JJ, Meikle PJ. Lysosomal biogenesis in lysosomal storage disorders. Exp Cell Res 1997; 234:85-97. [PMID: 9223373 DOI: 10.1006/excr.1997.3581] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Lysosomal biogenesis is an orchestration of the structural and functional elements of the lysosome to form an integrated organelle and involves the synthesis, targeting, functional residence, and turnover of the proteins that comprise the lysosome. We have investigated lysosomal biogenesis during the formation and dissipation of storage vacuoles in two model systems. One involves the formation of sucrosomes in normal skin fibroblasts and the other utilizes storage disorder-affected skin fibroblasts; both of these systems result in an increase in the size and the number of lysosomal vacuoles. Lysosomal proteins, beta-hexosaminidase, alpha-mannosidase, N-acetylgalactosamine-4-sulfatase, acid phosphatase, and the lysosome-associated membrane protein, LAMP-1, were shown to be elevated between 2- and 28-fold above normal during lysosomal storage. Levels of mRNA for the lysosome-associated membrane proteins LAMP-1 and LAMP-2, N-acetylgalactosamine-4-sulfatase, and the 46- and 300-kDa mannose-6-phosphate receptors were also elevated 2- to 8-fold. The up-regulation of protein and mRNA lagged 2-4 days behind the formation of lysosomal storage vacuoles. Correction of storage, in both systems, resulted in the rapid decline of the mRNA to basal levels, with a slower decrease in the levels of lysosomal proteins. Lysosomal biogenesis in storage disorders is shown to be a regulated process which is partially controlled at, or prior to, the level of mRNA. Although lysosomal proteins were differentially regulated, the coordination of these events in lysosomal biogenesis would suggest that a common mechanism(s) may be in operation.
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Affiliation(s)
- L E Karageorgos
- Department of Chemical Pathology, Women's and Children's Hospital, North Adelaide, South Australia
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Brooks DA, Harper GS, Gibson GJ, Ashton LJ, Taylor JA, McCourt PA, Freeman C, Clements PR, Hoffmann JW, Hopwood JJ. Hurler syndrome: a patient with abnormally high levels of alpha-L-iduronidase protein. BIOCHEMICAL MEDICINE AND METABOLIC BIOLOGY 1992; 47:211-20. [PMID: 1627351 DOI: 10.1016/0885-4505(92)90028-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Mucopolysaccharidosis type I (MPS I: McKusick 25280) is a clinically heterogenous lysosomal storage disorder which is caused by a variable deficiency in alpha-L-iduronidase activity (alpha-L-iduronide iduronohydrolase, EC 3.2.1.76). Cultured fibroblasts from an MPS I patient (cell line 2827) with a severe clinical phenotype (Hurler syndrome) have been characterized using immunochemical and biochemical techniques. Using a specific immunoquantification assay, we have demonstrated that cell line 2827 had an alpha-L-iduronidase protein content (189 ng/mg of extracted cell protein) at least six times greater than the mean level found in normal control fibroblasts (30 ng/mg of extracted cell protein). This was the only MPS I cell line, from a group of 23 MPS I patients, that contained greater than 7% of the mean level of alpha-L-iduronidase protein detected in normal controls. Cell line 2827 had very low alpha-L-iduronidase activity toward the fluorogenic substrate 4-methylumbelliferyl-alpha-L-iduronide, and a radiolabeled disaccharide substrate derived from heparin. Maturation studies of alpha-L-iduronidase in cell line 2827 showed apparently normal levels of alpha-L-iduronidase synthesis with delayed processing to the mature form. Subcellular fractionation experiments demonstrated alpha-L-iduronidase protein in lysosomal-enriched fractions isolated from cell line 2827, suggesting a normal cell distribution and supporting the proposed delayed processing. It is proposed that the MPS I patient described has an alpha-L-iduronidase gene mutation which affects both the active site and post-translational processing of the enzyme. This mutation must be structurally conservative because it does not result in instability either during maturation or in the lysosome.
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Affiliation(s)
- D A Brooks
- Department of Chemical Pathology, Adelaide Children's Hospital, South Australia
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Van Dyke TE, Hoop GA. Neutrophil function and oral disease. CRITICAL REVIEWS IN ORAL BIOLOGY AND MEDICINE : AN OFFICIAL PUBLICATION OF THE AMERICAN ASSOCIATION OF ORAL BIOLOGISTS 1990; 1:117-33. [PMID: 2152247 DOI: 10.1177/10454411900010020201] [Citation(s) in RCA: 90] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The pathological sequela of reduced neutrophil function in the oral cavity and the mechanisms behind dysfunction have added to our understanding of infectious diseases. Numerous examples have been given, and the overriding conclusion must be that any impairment of neutrophil function will lead to some degree of increased susceptibility to infection. Perhaps the tissue most sensitive to pathological changes in the oral cavity is the periodontium. In cases of severe neutrophil dysfunction, there is severe periodontal breakdown, but also in cases of "mild" neutrophil dysfunction, where there is no other infection, such as in individuals with LJP, there is severe periodontal breakdown. The molecular basis of neutrophil dysfunction is beginning to be understood in individuals with LJP, LAD, CGD, and AIDS. It is our hope that further research in this area will help to delineate the pathogenesis of these and other oral diseases.
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Affiliation(s)
- T E Van Dyke
- Department of Periodontology at Emory University School of Postgraduate Dentistry in Atlanta, Georgia
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Abstract
The pathologic sequela of reduced neutrophil function have been reviewed. In each case, the mechanism for the reduction in function has been elaborated when known. Special emphasis has been placed upon the pathologic changes in the oral cavity as a result of neutrophil dysfunction. Numerous examples have been given, and the overriding conclusion must be that any impairment of neutrophil function will lead to some degree of increased susceptibility to infection. Perhaps the tissue most sensitive to pathologic changes in the oral cavity is the periodontium. In cases of severe neutrophil dysfunction there is severe periodontal breakdown. But also in cases of "mild" neutrophil dysfunction, where there is no other infection, such as in individuals with LJP, there is severe periodontal breakdown. The molecular basis of neutrophil dysfunction is beginning to be understood in individuals with LJP. It is our hope that further research in this area will help to delineate the pathogenesis of periodontal diseases.
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Nano R, Gerzeli G, Invernizzi R, Perseghin P. Cytochemical pattern of alpha-mannosidase, alpha-fucosidase and neutral maltase in normal blood cells. Acta Histochem 1985; 77:55-9. [PMID: 3933255 DOI: 10.1016/s0065-1281(85)80015-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The activity of alpha-mannosidase, alpha-fucosidase and neutral maltase was studied by cytochemical techniques in blood cells of 20 controls and of 4 T and B lymphocyte concentrates. All granulocytes, monocytes and platelets showed fine or coarse reaction product deposition, whereas lymphocytes were negative or showed various positivity patterns. A significant difference of the positivity between T and B subpopulations was observed only for the fucosidase reaction. It is possible that the different positivity patterns of the lymphoid cells are related to different functional activities. Further studies will probably confirm the interest of the alpha-fucosidase reaction for the characterization of normal and pathological lymphoid cells.
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Abstract
1. A search for lysosomal hydrolases and related enzymes has been made in hemolysates from human and rabbit red cells. Apart from acid phosphatases, significant activities were found only for alpha-mannosidase, neutral alpha-glucosidase and beta-hexosaminidase. 2. alpha-Mannosidase (alpha-D-mannoside mannohydrolase, EC 3.2.1.24) activity per cell in human red blood cells was 200-times lower than in white cells. The optimal pH was 5.5--6.0. Electrophoresis on cellulose acetate showed three bands. Hemolysates from four patients with mannosidosis were not deficient in alpha-mannosidase. pH activity curves and elctrophoretic pattern were similar to those of controls. From its biochemical and genetic properties, it is concluded that red cell mannosidase differs from the lysosomal acid mannosidase.
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Sevillano FI, Rocha M, Cabezas JA. Comparative study on the activity, pH optimum and thermal stability of some glycosidases and acid phosphatase from pig and mule leukocytes. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1978; 60:413-7. [PMID: 45540 DOI: 10.1016/0305-0491(78)90070-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
1. alpha-D-mannosidase, beta-D-galactosidase, alpha-L-fucosidase, beta-N-acetylgalactosaminidase, alpha-D-glucosidase and acid phosphatase activities were studied in circulating blood leukocytes from Sus scropha var. domestica L. (pig) and Equus asinus x caballus (mule) by spectrophotometric procedures using p-nitrophenyl derivatives as substrates and three different buffer solutions. 2. The highest specific activity corresponds to acid phosphatase. The specific activities of the glycosidases, all relatively close together in all cases, were low in comparison with that of phosphatase. 3. Generally, each of the above-mentioned enzymes shows one common peak for the pH optimum between 3.5 and 6.0, except alpha-D-glucosidase, which shows two peaks. 4. The pH optima values are generally similar in three buffer solutions employed. 5. Specific activities of the studied enzymes show a parallelism in leukocytes from both pig and mule. Also, this parallelism is observed in their pH optima values. 6. Thermal stability of alpha-D-mannosidase is high whereas that of acid phosphatase is low, in both materials. For other enzymes, differences in the thermal stability was observed according to their source.
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Affiliation(s)
- F I Sevillano
- Department of Biochemistry, Faculties of Sciences and Pharmacy, University of Salamanca, Spain
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Desnick RJ, Walling LL, Anderson PM, Raman MK, Sharp HL, Ikonne JU. Mannosidosis: studies of the alpha-D-mannosidase isozymes in health and disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1976; 68:277-99. [PMID: 937109 DOI: 10.1007/978-1-4684-7735-1_19] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Chester MA, Lundblad A, Masson PK. The relationship between different forms of human alpha-mannosidase. BIOCHIMICA ET BIOPHYSICA ACTA 1975; 391:341-8. [PMID: 238600 DOI: 10.1016/0005-2744(75)90258-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The tissue distribution and some properties of human alpha-mannosidase (alpha-D-mannoside mannohydrolase EC 3.2.1.24) have been studied. The acidic forms of the enzyme were fairly stable, whereas the neutral forms easily lost enzymic activity. The acidic forms were sensitive to neuraminidase but the neutral forms were unaffected. The experiments indicate that the acidic components are closely related to each other, differing only in sialic acid content and possibly conformation. The neutral forms of the enzyme are probably quite different from the acidic forms both in structure and cellular function.
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Abstract
1. Two methods were used to obtain alpha-mannosidase free from unbound Zn2+, (a) by removal of excess of metal ion from preparations purified in the presence of Zn2+ and (b) by purification under conditions that eliminate the need to add Zn2+. 2. The purified enzyme is homogeneous on ultracentrifugation, polyacrylamide-gel electrophoresis and gel chromatography. 3. The molecular weight is estimated to be 230 000. 4. The enzyme contains between 470 and 565 mug of zinc/g of protein, corresponding to between 1.7 and 2 atoms of zinc/enzyme molecule. The contents of other metals are much lower. 5. The enzyme is inactivated by chelating agents and activity is restored by Zn2+. 6. No other metal ion was found to replace Zn2+ with retention of activity. Some bivalent metal ions, e.g. Cu2+, rapidly inactivate the enzyme. 7. The results indicate that jack-bean alpha-mannosidase exists naturally as a zinc-protein complex and may be considered as a metalloenzyme.
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Avila J, Convit J. Studies on human polymorphonuclear leukocyte enzymes IV. Intracellular distribution and properties of α-l-fucosidase. ACTA ACUST UNITED AC 1974. [DOI: 10.1016/0005-2744(74)90461-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Avila JL, Convit J. Studies on human polymorphonuclear leukocyte enzymes. 3. Differential activation of primary and specific granules by phospholipase C and deoxycholate. BIOCHIMICA ET BIOPHYSICA ACTA 1974; 345:11-6. [PMID: 4838203 DOI: 10.1016/0005-2736(74)90240-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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