Lysosome-associated membrane glycoprotein

Last updated
Lysosome-associated membrane glycoprotein (Lamp)
Identifiers
SymbolLamp, LAMP (root symbol of family)
Pfam PF01299
InterPro IPR002000
PROSITE PDOC00280
TCDB 9.A.16
OPM superfamily 423
OPM protein 2mom
Membranome 51
Available protein structures:
Pfam   structures / ECOD  
PDB RCSB PDB; PDBe; PDBj
PDBsum structure summary

Lysosome-associated membrane glycoproteins (LAMPs) [1] [2] [3] [4] are integral membrane proteins, specific to lysosomes, and whose exact biological function is not yet clear. Structurally, the lamp proteins consist of two internally homologous lysosome-luminal domains separated by a proline-rich hinge region; at the C-terminal extremity there is a transmembrane region (TM) followed by a very short cytoplasmic tail (C). In each of the duplicated domains, there are two conserved disulfide bonds. This structure is schematically represented in the figure below.

  +-----+            +-----+         +-----+            +-----+   |     |            |     |         |     |            |     |  xCxxxxxCxxxxxxxxxxxxCxxxxxCxxxxxxxxxCxxxxxCxxxxxxxxxxxxCxxxxxCxxxxxxxx  +--------------------------++Hinge++--------------------------++TM++C+

In mammals, there are two closely related types of LAMP: LAMP1 and LAMP2.

CD68 (also called gp110 or macrosialin) [5] is a heavily glycosylated integral membrane protein whose structure consists of a mucin-like domain followed by a proline-rich hinge; a single LAMP-like domain; a transmembrane region and a short cytoplasmic tail.

CD molecules are leucocyte antigens on cell surfaces. CD antigen nomenclature is updated at Protein Reviews On The Web (https://web.archive.org/web/20080920090434/http://mpr.nci.nih.gov/prow/).

Human proteins containing this domain

Related Research Articles

Lamp, Lamps or LAMP may refer to:

<span class="mw-page-title-main">Insulin-like growth factor 2 receptor</span> Protein-coding gene in the species Homo sapiens

Insulin-like growth factor 2 receptor (IGF2R), also called the cation-independent mannose-6-phosphate receptor (CI-MPR) is a protein that in humans is encoded by the IGF2R gene. IGF2R is a multifunctional protein receptor that binds insulin-like growth factor 2 (IGF2) at the cell surface and mannose-6-phosphate (M6P)-tagged proteins in the trans-Golgi network.

<span class="mw-page-title-main">CD68</span> Mammalian protein found in Homo sapiens

CD68 is a protein highly expressed by cells in the monocyte lineage, by circulating macrophages, and by tissue macrophages.

<span class="mw-page-title-main">Integrin beta 3</span> Mammalian protein found in Homo sapiens

Integrin beta-3 (β3) or CD61 is a protein that in humans is encoded by the ITGB3 gene. CD61 is a cluster of differentiation found on thrombocytes.

Loop-mediated isothermal amplification (LAMP) is a single-tube technique for the amplification of DNA and a low-cost alternative to detect certain diseases that was invented in 2000 at the University of Tokyo. Reverse transcription loop-mediated isothermal amplification (RT-LAMP) combines LAMP with a reverse transcription step to allow the detection of RNA.

<span class="mw-page-title-main">Integrin alpha 2b</span> Mammalian protein found in Homo sapiens

Integrin alpha-IIb is a protein that in humans is encoded by the ITGA2B gene. ITGA2B, also known as CD41, encodes integrin alpha chain 2b. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. Alpha chain 2b undergoes post-translational cleavage to yield disulfide-linked light and heavy chains that join with beta 3 to form a fibrinogen receptor expressed in platelets that plays a crucial role in coagulation. Mutations that interfere with this role result in thrombasthenia. At least 38 disease-causing mutations in this gene have been discovered. In addition to adhesion, integrins are known to participate in cell-surface mediated signalling.

<span class="mw-page-title-main">Mucin short variant S1</span> Human protein

Mucin short variant S1, also called polymorphic epithelial mucin (PEM) or epithelial membrane antigen (EMA), is a mucin encoded by the MUC1 gene in humans. Mucin short variant S1 is a glycoprotein with extensive O-linked glycosylation of its extracellular domain. Mucins line the apical surface of epithelial cells in the lungs, stomach, intestines, eyes and several other organs. Mucins protect the body from infection by pathogen binding to oligosaccharides in the extracellular domain, preventing the pathogen from reaching the cell surface. Overexpression of MUC1 is often associated with colon, breast, ovarian, lung and pancreatic cancers. Joyce Taylor-Papadimitriou identified and characterised the antigen during her work with breast and ovarian tumors.

<span class="mw-page-title-main">LRP2</span> Mammalian protein found in Homo sapiens

Low density lipoprotein receptor-related protein 2 also known as LRP-2 or megalin is a protein which in humans is encoded by the LRP2 gene.

<span class="mw-page-title-main">LAMP2</span> Protein-coding gene in the species Homo sapiens

Lysosome-associated membrane protein 2 (LAMP2), also known as CD107b and Mac-3, is a human gene. Its protein, LAMP2, is one of the lysosome-associated membrane glycoproteins.

<span class="mw-page-title-main">Sodium-hydrogen exchange regulatory cofactor 2</span> Protein-coding gene in the species Homo sapiens

Sodium-hydrogen exchange regulatory cofactor NHE-RF2 (NHERF-2) also known as tyrosine kinase activator protein 1 (TKA-1) or SRY-interacting protein 1 (SIP-1) is a protein that in humans is encoded by the SLC9A3R2 gene.

<span class="mw-page-title-main">GP1BA</span> Protein-coding gene in the species Homo sapiens

Platelet glycoprotein Ib alpha chain also known as glycoprotein Ib (platelet), alpha polypeptide or CD42b, is a protein that in humans is encoded by the GP1BA gene.

<span class="mw-page-title-main">Signal-regulatory protein alpha</span> Protein-coding gene in the species Homo sapiens

Signal regulatory protein α (SIRPα) is a regulatory membrane glycoprotein from SIRP family expressed mainly by myeloid cells and also by stem cells or neurons.

<span class="mw-page-title-main">HLA-DMA</span> Protein-coding gene in the species Homo sapiens

HLA class II histocompatibility antigen, DM alpha chain is a protein that in humans is encoded by the HLA-DMA gene.

<span class="mw-page-title-main">CEACAM6</span> Mammalian protein found in Homo sapiens

Carcinoembryonic antigen-related cell adhesion molecule 6 (CEACAM6) also known as CD66c, is a member of the carcinoembryonic antigen (CEA) gene family..

<span class="mw-page-title-main">LAMP1</span> Protein-coding gene in the species Homo sapiens

Lysosomal-associated membrane protein 1 (LAMP-1) also known as lysosome-associated membrane glycoprotein 1 and CD107a, is a protein that in humans is encoded by the LAMP1 gene. The human LAMP1 gene is located on the long arm (q) of chromosome 13 at region 3, band 4 (13q34).

<span class="mw-page-title-main">HLA-DOB</span> Protein-coding gene in the species Homo sapiens

HLA class II histocompatibility antigen, DO beta chain is a protein that in humans is encoded by the HLA-DOB gene.

<span class="mw-page-title-main">LAMP3</span> Protein-coding gene in the species Homo sapiens

Lysosome-associated membrane glycoprotein 3 is a protein that in humans is encoded by the LAMP3 gene. It is one of the lysosome-associated membrane glycoproteins.

<span class="mw-page-title-main">CD79A</span> Mammalian protein found in Homo sapiens

Cluster of differentiation CD79A also known as B-cell antigen receptor complex-associated protein alpha chain and MB-1 membrane glycoprotein, is a protein that in humans is encoded by the CD79A gene.

<span class="mw-page-title-main">CD3D</span> Protein-coding gene in the species Homo sapiens

T-cell surface glycoprotein CD3 delta chain is a protein that in humans is encoded by the CD3D gene.

<span class="mw-page-title-main">Reverse Transcription Loop-mediated Isothermal Amplification</span>

Reverse transcription loop-mediated isothermal amplification (RT-LAMP) is a one step nucleic acid amplification method to multiply specific sequences of RNA. It is used to diagnose infectious disease caused by RNA viruses.

References

  1. Iwamoto, Tomotada; Sonobe, Toshiaki; Hayashi, Kozaburo (June 2003). "Loop-Mediated Isothermal Amplification for Direct Detection of Mycobacterium tuberculosis Complex, M. avium, and M. intracellulare in Sputum Samples". Journal of Clinical Microbiology. 41 (6): 2616–2622. doi:10.1128/JCM.41.6.2616-2622.2003. PMC   156570 . PMID   12791888.
  2. Nagamine, K.; Hase, T.; Notomi, T. (June 2002). "Accelerated reaction by loop-mediated isothermal amplification using loop primers". Molecular and Cellular Probes. 16 (3): 223–229. doi:10.1006/mcpr.2002.0415. PMID   12144774.
  3. Notomi, Tsugunori; Okayama, Hiroto; Masubuchi, Harumi; et al. (2000). "Loop-mediated isothermal amplification of DNA". DNA. Nucleic Acids Res. 28 (12): e63. doi:10.1093/nar/28.12.e63. PMC   102748 . PMID   10871386.
  4. Fukuda Minoru (November 1991). "Lysosomal membrane glycoproteins. Structure, biosynthesis, and intracellular trafficking". J. Biol. Chem. 266 (32): 21327–21330. doi: 10.1016/S0021-9258(18)54636-6 . PMID   1939168.
  5. Holness CL, da Silva RP, Fawcett J, Gordon S, Simmons DL (1993). "Macrosialin, a mouse macrophage-restricted glycoprotein, is a member of the lamp/lgp family". J. Biol. Chem. 268 (13): 9661–9666. doi: 10.1016/S0021-9258(18)98400-0 . PMID   8486654.
This article incorporates text from the public domain Pfam and InterPro: IPR002000