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- PDB-7kdv: Murine core lysosomal multienzyme complex (LMC) composed of acid ... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7kdv | ||||||||||||
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Title | Murine core lysosomal multienzyme complex (LMC) composed of acid beta-galactosidase (GLB1) and protective protein cathepsin A (PPCA, CTSA) | ||||||||||||
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![]() | HYDROLASE / glycosidase / protease / lysosome | ||||||||||||
Function / homology | ![]() Keratan sulfate degradation / Glycosphingolipid metabolism / HS-GAG degradation / response to cortisone / Sialic acid metabolism / : / response to Thyroglobulin triiodothyronine / carboxypeptidase C / serine-type carboxypeptidase activity / galactose catabolic process ...Keratan sulfate degradation / Glycosphingolipid metabolism / HS-GAG degradation / response to cortisone / Sialic acid metabolism / : / response to Thyroglobulin triiodothyronine / carboxypeptidase C / serine-type carboxypeptidase activity / galactose catabolic process / galactoside binding / MHC class II antigen presentation / beta-galactosidase / negative regulation of chaperone-mediated autophagy / vacuole / beta-galactosidase activity / Neutrophil degranulation / regulation of protein stability / lysosome / hydrolase activity / lysosomal membrane / intracellular membrane-bounded organelle / Golgi apparatus / protein homodimerization activity / mitochondrion / proteolysis / extracellular space / cytoplasm Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.59 Å | ||||||||||||
![]() | Gorelik, A. / Illes, K. / Hasan, S.M.N. / Nagar, B. / Mazhab-Jafari, M.T. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of the murine lysosomal multienzyme complex core. Authors: Alexei Gorelik / Katalin Illes / S M Naimul Hasan / Bhushan Nagar / Mohammad T Mazhab-Jafari / ![]() Abstract: The enzymes β-galactosidase (GLB1) and neuraminidase 1 (NEU1; sialidase 1) participate in the degradation of glycoproteins and glycolipids in the lysosome. To remain active and stable, they ...The enzymes β-galactosidase (GLB1) and neuraminidase 1 (NEU1; sialidase 1) participate in the degradation of glycoproteins and glycolipids in the lysosome. To remain active and stable, they associate with PPCA [protective protein cathepsin A (CTSA)] into a high-molecular weight lysosomal multienzyme complex (LMC), of which several forms exist. Genetic defects in these three proteins cause the lysosomal storage diseases GM1-gangliosidosis/mucopolysaccharidosis IV type B, sialidosis, and galactosialidosis, respectively. To better understand the interactions between these enzymes, we determined the three-dimensional structure of the murine LMC core. This 0.8-MDa complex is composed of three GLB1 dimers and three CTSA dimers, adopting a triangular architecture maintained through six copies of a unique GLB1-CTSA polar interface. Mutations in this contact surface that occur in GM1-gangliosidosis prevent formation of the LMC in vitro. These findings may facilitate development of therapies for lysosomal storage disorders. | ||||||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 1.1 MB | Display | ![]() |
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PDB format | ![]() | 944.5 KB | Display | ![]() |
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-Validation report
Summary document | ![]() | 2.1 MB | Display | ![]() |
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Full document | ![]() | 2.2 MB | Display | |
Data in XML | ![]() | 167.5 KB | Display | |
Data in CIF | ![]() | 257 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 22830MC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Noncrystallographic symmetry (NCS) | NCS domain:
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