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Pinar M, Alonso A, de los Ríos V, Bravo-Plaza I, de la Gandara Á, Galindo A, Arias-Palomo E, Peñalva MÁ. The type V myosin-containing complex HUM is a RAB11 effector powering movement of secretory vesicles. iScience 2022; 25:104514. [PMID: 35754728 PMCID: PMC9213775 DOI: 10.1016/j.isci.2022.104514] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/28/2022] [Accepted: 05/26/2022] [Indexed: 01/01/2023] Open
Abstract
In the apex-directed RAB11 exocytic pathway of Aspergillus nidulans, kinesin-1/KinA conveys secretory vesicles (SVs) to the hyphal tip, where they are transferred to the type V myosin MyoE. MyoE concentrates SVs at an apical store located underneath the PM resembling the presynaptic active zone. A rod-shaped RAB11 effector, UDS1, and the intrinsically disordered and coiled-coil HMSV associate with MyoE in a stable HUM (HMSV-UDS1-MyoE) complex recruited by RAB11 to SVs through an interaction network involving RAB11 and HUM components, with the MyoE globular tail domain (GTD) binding both HMSV and RAB11-GTP and RAB11-GTP binding both the MyoE-GTD and UDS1. UDS1 bridges RAB11-GTP to HMSV, an avid interactor of the MyoE-GTD. The interaction between the UDS1-HMSV sub-complex and RAB11-GTP can be reconstituted in vitro. Ablating UDS1 or HMSV impairs actomyosin-mediated transport of SVs to the apex, resulting in spreading of RAB11 SVs across the apical dome as KinA/microtubule-dependent transport gains prominence.
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Affiliation(s)
- Mario Pinar
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Ana Alonso
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Vivian de los Ríos
- Proteomics Facility, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Ignacio Bravo-Plaza
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Álvaro de la Gandara
- Department of Chemical and Structural Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Antonio Galindo
- Division of Cell Biology, MRC Laboratory of Molecular Biology, Francis Crick Avenue, CB2 0QH Cambridge, UK
| | - Ernesto Arias-Palomo
- Department of Chemical and Structural Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Miguel Á. Peñalva
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
- Corresponding author
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Bussink HJ, Bignell EM, Múnera-Huertas T, Lucena-Agell D, Scazzocchio C, Espeso EA, Bertuzzi M, Rudnicka J, Negrete-Urtasun S, Peñas-Parilla MM, Rainbow L, Peñalva MÁ, Arst HN, Tilburn J. Refining the pH response in Aspergillus nidulans: a modulatory triad involving PacX, a novel zinc binuclear cluster protein. Mol Microbiol 2015; 98:1051-72. [PMID: 26303777 PMCID: PMC4832277 DOI: 10.1111/mmi.13173] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2015] [Indexed: 01/18/2023]
Abstract
The Aspergillus nidulans PacC transcription factor mediates gene regulation in response to alkaline ambient pH which, signalled by the Pal pathway, results in the processing of PacC72 to PacC27 via PacC53. Here we investigate two levels at which the pH regulatory system is transcriptionally moderated by pH and identify and characterise a new component of the pH regulatory machinery, PacX. Transcript level analysis and overexpression studies demonstrate that repression of acid‐expressed palF, specifying the Pal pathway arrestin, probably by PacC27 and/or PacC53, prevents an escalating alkaline pH response. Transcript analyses using a reporter and constitutively expressed pacC
trans‐alleles show that pacC preferential alkaline‐expression results from derepression by depletion of the acid‐prevalent PacC72 form. We additionally show that pacC repression requires PacX. pacX mutations suppress PacC processing recalcitrant mutations, in part, through derepressed PacC levels resulting in traces of PacC27 formed by pH‐independent proteolysis. pacX was cloned by impala transposon mutagenesis. PacX, with homologues within the Leotiomyceta, has an unusual structure with an amino‐terminal coiled‐coil and a carboxy‐terminal zinc binuclear cluster. pacX mutations indicate the importance of these regions. One mutation, an unprecedented finding in A. nidulans genetics, resulted from an insertion of an endogenous Fot1‐like transposon.
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Affiliation(s)
- Henk-Jan Bussink
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
| | - Elaine M Bignell
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK.,Manchester Fungal Infection Group, Institute for Inflammation and Repair, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Tatiana Múnera-Huertas
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
| | - Daniel Lucena-Agell
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, Madrid, 28040, Spain
| | - Claudio Scazzocchio
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK.,Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Orsay, France
| | - Eduardo A Espeso
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, Madrid, 28040, Spain
| | - Margherita Bertuzzi
- Manchester Fungal Infection Group, Institute for Inflammation and Repair, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Joanna Rudnicka
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
| | - Susana Negrete-Urtasun
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
| | - Maria M Peñas-Parilla
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
| | - Lynne Rainbow
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
| | - Miguel Á Peñalva
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas CSIC, Ramiro de Maeztu 9, Madrid, 28040, Spain
| | - Herbert N Arst
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
| | - Joan Tilburn
- Section of Microbiology, Imperial College London, Flowers Building, Armstrong Road, London, SW7 2AZ, UK
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Díez E, Álvaro J, Espeso EA, Rainbow L, Suárez T, Tilburn J, Arst HN, Peñalva MÁ. Activation of the Aspergillus PacC zinc finger transcription factor requires two proteolytic steps. EMBO J 2002; 21:1350-9. [PMID: 11889040 PMCID: PMC125927 DOI: 10.1093/emboj/21.6.1350] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The Aspergillus PacC transcription factor undergoes proteolytic activation in response to alkaline ambient pH. In acidic environments, the 674 residue translation product adopts a 'closed' conformation, protected from activation through intramolecular interactions involving the < or = 150 residue C-terminal domain. pH signalling converts PacC to an accessible conformation enabling processing cleavage within residues 252--254. We demonstrate that activation of PacC requires two sequential proteolytic steps. First, the 'closed' translation product is converted to an accessible, committed intermediate by proteolytic elimination of the C-terminus. This ambient pH-regulated cleavage is required for the final, pH-independent processing reaction and is mediated by a distinct signalling protease (possibly PalB). The signalling protease cleaves PacC between residues 493 and 500, within a conserved 24 residue 'signalling protease box'. Precise deletion or Leu498Ser substitution prevents formation of the committed and processed forms, demonstrating that signalling cleavage is essential for final processing. In contrast, signalling cleavage is not required for processing of the Leu340Ser protein, which lacks interactions preventing processing. In its two-step mechanism, PacC processing can be compared with regulated intramembrane proteolysis.
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Affiliation(s)
| | | | | | - Lynne Rainbow
- Departamento de Microbiología Molecular, Centro de Investigaciones Biológicas del CSIC, Velázquez 144, Madrid 28006, Spain and
Department of Infectious Diseases, Faculty of Medicine, Imperial College of Science, Technology & Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK Present address: Division of Reproductive and Child Health, Medical and Molecular Genetics, The Medical School, Edgbaston, Birmingham B15 2TT, UK Corresponding author e-mail:
| | | | - Joan Tilburn
- Departamento de Microbiología Molecular, Centro de Investigaciones Biológicas del CSIC, Velázquez 144, Madrid 28006, Spain and
Department of Infectious Diseases, Faculty of Medicine, Imperial College of Science, Technology & Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK Present address: Division of Reproductive and Child Health, Medical and Molecular Genetics, The Medical School, Edgbaston, Birmingham B15 2TT, UK Corresponding author e-mail:
| | - Herbert N. Arst
- Departamento de Microbiología Molecular, Centro de Investigaciones Biológicas del CSIC, Velázquez 144, Madrid 28006, Spain and
Department of Infectious Diseases, Faculty of Medicine, Imperial College of Science, Technology & Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK Present address: Division of Reproductive and Child Health, Medical and Molecular Genetics, The Medical School, Edgbaston, Birmingham B15 2TT, UK Corresponding author e-mail:
| | - Miguel Á. Peñalva
- Departamento de Microbiología Molecular, Centro de Investigaciones Biológicas del CSIC, Velázquez 144, Madrid 28006, Spain and
Department of Infectious Diseases, Faculty of Medicine, Imperial College of Science, Technology & Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK Present address: Division of Reproductive and Child Health, Medical and Molecular Genetics, The Medical School, Edgbaston, Birmingham B15 2TT, UK Corresponding author e-mail:
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Gallardo ME, Desviat LR, Rodríguez JM, Esparza-Gordillo J, Pérez-Cerdá C, Pérez B, Rodríguez-Pombo P, Criado O, Sanz R, Morton DH, Gibson KM, Le TP, Ribes A, de Córdoba SR, Ugarte M, Peñalva MÁ. The molecular basis of 3-methylcrotonylglycinuria, a disorder of leucine catabolism. Am J Hum Genet 2001; 68:334-46. [PMID: 11170888 PMCID: PMC1235267 DOI: 10.1086/318202] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2000] [Accepted: 12/12/2000] [Indexed: 11/03/2022] Open
Abstract
3-Methylcrotonylglycinuria is an inborn error of leucine catabolism and has a recessive pattern of inheritance that results from the deficiency of 3-methylcrotonyl-CoA carboxylase (MCC). The introduction of tandem mass spectrometry in newborn screening has revealed an unexpectedly high incidence of this disorder, which, in certain areas, appears to be the most frequent organic aciduria. MCC, an heteromeric enzyme consisting of alpha (biotin-containing) and beta subunits, is the only one of the four biotin-dependent carboxylases known in humans that has genes that have not yet been characterized, precluding molecular studies of this disease. Here we report the characterization, at the genomic level and at the cDNA level, of both the MCCA gene and the MCCB gene, encoding the MCC alpha and MCC beta subunits, respectively. The 19-exon MCCA gene maps to 3q25-27 and encodes a 725-residue protein with a biotin attachment site; the 17-exon MCCB gene maps to 5q12-q13 and encodes a 563-residue polypeptide. We show that disease-causing mutations can be classified into two complementation groups, denoted "CGA" and "CGB." We detected two MCCA missense mutations in CGA patients, one of which leads to absence of biotinylated MCC alpha. Two MCCB missense mutations and one splicing defect mutation leading to early MCC beta truncation were found in CGB patients. A fourth MCCB mutation also leading to early MCC beta truncation was found in two nonclassified patients. A fungal model carrying an mccA null allele has been constructed and was used to demonstrate, in vivo, the involvement of MCC in leucine catabolism. These results establish that 3-methylcrotonylglycinuria results from loss-of-function mutations in the genes encoding the alpha and beta subunits of MCC and complete the genetic characterization of the four human biotin-dependent carboxylases.
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MESH Headings
- Adult
- Amino Acid Metabolism, Inborn Errors/enzymology
- Amino Acid Metabolism, Inborn Errors/genetics
- Amino Acid Metabolism, Inborn Errors/pathology
- Amino Acid Sequence
- Aspergillus nidulans/drug effects
- Aspergillus nidulans/genetics
- Aspergillus nidulans/growth & development
- Base Sequence
- Blotting, Northern
- Carbon-Carbon Ligases/genetics
- Carbon-Carbon Ligases/metabolism
- Child, Preschool
- Chromosome Mapping
- Chromosomes, Human, Pair 3/genetics
- Chromosomes, Human, Pair 5/genetics
- DNA/chemistry
- DNA/genetics
- DNA Mutational Analysis
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- Exons
- Female
- Gene Expression Regulation, Enzymologic
- Genes/genetics
- Humans
- In Situ Hybridization, Fluorescence
- Infant
- Introns
- Isoenzymes/genetics
- Isoenzymes/metabolism
- Leucine/metabolism
- Leucine/pharmacology
- Molecular Sequence Data
- Mutation
- Protein Subunits
- RNA/genetics
- RNA/metabolism
- Radiation Hybrid Mapping
- Sequence Analysis, DNA
- Tissue Distribution
- Transcription, Genetic
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Affiliation(s)
- M. Esther Gallardo
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Lourdes R. Desviat
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - José M. Rodríguez
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Jorge Esparza-Gordillo
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Celia Pérez-Cerdá
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Belén Pérez
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Pilar Rodríguez-Pombo
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Olga Criado
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Raul Sanz
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - D. Holmes Morton
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - K. Michael Gibson
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Thuy P. Le
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Antonia Ribes
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Santiago Rodríguez de Córdoba
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Magdalena Ugarte
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
| | - Miguel Á. Peñalva
- Centro de Investigaciones Biológicas CSIC, Fundación Jiménez Díaz, and Centro de Biología Molecular CSIC-UAM, Universidad Autónoma de Madrid, Madrid; Clinic for Special Children, Strasburg, PA; Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland; Department of Pediatrics, University of California San Diego School of Medicine, La Jolla; and Institut de Bioquímica Clìnica, Corporació Sanitària Clínic, Barcelona
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