Crystal structure of the membrane-proximal domain of mouse lysosome-associated membrane protein 1 (LAMP-1)

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 

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Lysosome-associated membrane proteins-1 and -2 (LAMP-1 and LAMP-2) assemble via distinct modes

Terasawa, K.Tomabechi, Y.Ikeda, M.Ehara, H.Kukimoto-Niino, M.Wakiyama, M.Podyma-Inoue, K.A.Rajapakshe, A.R.Watabe, T.Shirouzu, M.Hara-Yokoyama, M.

(2016) Biochem Biophys Res Commun 479: 489-495

  • DOI: https://doi.org/10.1016/j.bbrc.2016.09.093
  • Primary Citation of Related Structures:  
    5GV0, 5GV3

  • PubMed Abstract: 

    Lysosome-associated membrane proteins 1 and 2 (LAMP-1 and LAMP-2) have a large, heavily glycosylated luminal domain composed of two subdomains, and are the most abundant protein components in lysosome membranes. LAMP-1 and LAMP-2 have distinct functions, and the presence of both proteins together is required for the essential regulation of autophagy to avoid embryonic lethality. However, the structural aspects of LAMP-1 and LAMP-2 have not been elucidated. In the present study, we demonstrated that the subdomains of LAMP-1 and LAMP-2 adopt the unique β-prism fold, similar to the domain structure of the dendritic cell-specific-LAMP (DC-LAMP, LAMP-3), confirming the conserved aspect of this family of lysosome-associated membrane proteins. Furthermore, we evaluated the effects of the N-domain truncation of LAMP-1 or LAMP-2 on the assembly of LAMPs, based on immunoprecipitation experiments. We found that the N-domain of LAMP-1 is necessary, whereas that of LAMP-2 is repressive, for the organization of a multimeric assembly of LAMPs. Accordingly, the present study suggests for the first time that the assembly modes of LAMP-1 and LAMP-2 are different, which may underlie their distinct functions.

  • Organizational Affiliation

    Department of Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lysosome-associated membrane glycoprotein 1168Mus musculusMutation(s): 0 
Gene Names: Lamp1Lamp-1
UniProt & NIH Common Fund Data Resources
Find proteins for P11438 (Mus musculus)
Explore P11438 
Go to UniProtKB:  P11438
IMPC:  MGI:96745
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11438
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 31.596α = 90
b = 50.047β = 90
c = 95.144γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-12
    Type: Initial release
  • Version 1.1: 2016-10-19
    Changes: Database references
  • Version 1.2: 2020-02-26
    Changes: Data collection, Database references, Derived calculations
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary