The Full Wiki

ADAM10: Wikis

Advertisements
  

Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! See more info or our list of citable articles.

Encyclopedia

From Wikipedia, the free encyclopedia

edit
ADAM metallopeptidase domain 10

PDB rendering based on 2ao7.
Available structures
2ao7
Identifiers
Symbols ADAM10; CD156c; HsT18717; MADM; kuz
External IDs OMIM602192 MGI109548 HomoloGene865 GeneCards: ADAM10 Gene
RNA expression pattern
PBB GE ADAM10 202603 at tn.png
PBB GE ADAM10 202604 x at tn.png
PBB GE ADAM10 214895 s at tn.png
More reference expression data
Orthologs
Species Human Mouse
Entrez 102 11487
Ensembl ENSG00000137845 ENSMUSG00000054693
UniProt O14672 Q6NZC0
RefSeq (mRNA) NM_001110 NM_007399
RefSeq (protein) NP_001101 NP_031425
Location (UCSC) Chr 15:
56.68 - 56.83 Mb
Chr 9:
70.48 - 70.58 Mb
PubMed search [1] [2]

A Disintegrin And Metallopeptidase 10, also known as ADAM10, is a protein which in humans is encoded by the ADAM10 gene.[1]

Contents

Function

Members of the ADAM family are cell surface proteins with a unique structure possessing both potential adhesion and protease domains. Sheddase, a generic name for the ADAM metallopeptidase, functions primarily to cleave membrane proteins at the cellular surface. Once cleaved, the sheddases release soluble ectodomains with an altered location and function.[2]

Although a single sheddase may “shed” a variety of substances, multiple sheddases can cleave the same substrate resulting in different consequences.This gene encodes an ADAM family member that cleaves many proteins including TNF-alpha and E-cadherin.[1]

ADAM10 (EC#: 3.4.24.81) is a sheddase, and has a broad specificity for peptide hydrolysis reactions. [3]

New data on the ADAM10 shedding of ephrin/eph complex associated with Eph on one cell surface has determined that ADAM10 cleaves ephrin, within the ephrin/eph complex, formed between two cell surfaces. When ephrin is freed from the opposing cell, the entire ephrin/eph complex is endocytosed. This shedding in trans had not been previously shown, but may well be involved in other shedding events.[2]

Structure

Although no crystallographic x-ray diffraction analyses have been published that depict the entire structure of ADAM10, one domain has been studied using this technique. The disintigrin and cysteine-rich domain (shown to the right) plays an essential role in regulation of protease activity in vivo. Recent experimental evidence suggests that this region, which is distinct from the active site, may be responsible for substrate specificity of the enzyme. It is proposed that this domain binds to particular regions of the enzyme’s substrate, allowing peptide bond hydrolysis to occur in well defined locations on certain substrate proteins.[4]

The proposed active site of ADAM10 has been identified by sequence analysis, and is identical to enzymes in the Snake Venom metalloprotein domain family. The consensus sequence for catalytically active ADAM proteins is HEXGHNLGXXHD. Structural analysis of ADAM17, which has the same active site sequence as ADAM10, suggests that the three histidines in this sequence bind a Zn2+ atom, and that the glutamate is the catalytic residue.[5]

In the image of the active site shown above, the catalytic glutamate residue is on the left, and the zinc (light blue) is shown coordinated to three histidine residues. An inhibitor is bound to the active site, which is shown extending out of frame from the active site.

Catalytic Mechanism

Although the exact mechanism of ADAM10 has not been thoroughly investigated, its active site is homologous to those of well studied zinc-proteases such as carboxypeptidase A and thermolysin. Therefore it is proposed that ADAM10 utilizes a similar mechanism as these enzymes. In zinc proteases, the key catalytic elements have been identified as a glutamate residue and a Zn2+ ion coordinated to histidine residues.[6]

The proposed mechanism begins with deprotonation of a water molecule by glutamate. The resultant hydroxide initiates a nucleophillic attack on a carbonyl carbon on the peptide backbone, producing a tetrahedral intermediate. This step is facilitated by electron withdrawal from oxygen by Zn2+ and by zinc’s subsequent stabilization of the negative charge on the oxygen atom in the intermediate state. As electrons move down from the oxygen atom to re-form the double bond, the tetrahedral intermediate collapses to products with protonation of -NH by the glutamate residue.[6]

Clinical significance

Advertisements

Interaction with the malaria parasite

A number of different proteins on the surface of Plasmodium falciparum malaria parasites help the invaders bind to red blood cells. But once attached to host blood cells, the parasites need to shed the 'sticky' surface proteins that would otherwise interfere with entrance into the cell. The Sheddase enzyme, specifically called PfSUB2 in this example, is required for the parasites to invade cells; without it, the parasites die. The sheddase is stored in and released from cellular compartments near the tip of the parasite, according to the study. Once on the surface, the enzyme attaches to a motor that shuttles it from front to back, liberating the sticky surface proteins. With these proteins removed, the parasite gains entrance into a red blood cell. The entire invasion lasts about 30 seconds and without this ADAM metallopeptidase, malaria would be ineffective at invading the red blood cells.[7]

Breast cancer

In combination with low doses of herceptin, selective ADAM10 inhibitors decrease proliferation in HER2 over-expressing cell lines while inhibitors, that do not inhibit ADAM10, have no impact. These results are consistent with ADAM10 being a major determinant of HER2 shedding, the inhibition of which, may provide a novel therapeutic approach for treating breast cancer and a variety of other cancers with active HER2 signaling.[8]

See also

References

  1. ^ a b "Entrez Gene: ADAM10 ADAM metallopeptidase domain 10". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=102.  
  2. ^ a b "R&D Systems: NEED HELP AT THE CELL SURFACE? ASK YOUR LOCAL SHEDDASE". http://www.rndsystems.com/cb_detail_objectname_wi06_sheddase.aspx.  
  3. ^ "Entry of ADAM10 endopeptidase (EC-Number 3.4.24.81 )". http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.24.81.  
  4. ^ Smith KM, Gaultier A, Cousin H, Alfandari D, White JM, DeSimone DW (December 2002). "The cysteine-rich domain regulates ADAM protease function in vivo". The Journal of Cell Biology 159 (5): 893–902. doi:10.1083/jcb.200206023. PMID 12460986.  
  5. ^ Wolfsberg TG, Primakoff P, Myles DG, White JM (October 1995). "ADAM, a novel family of membrane proteins containing A Disintegrin And Metalloprotease domain: multipotential functions in cell-cell and cell-matrix interactions". The Journal of Cell Biology 131 (2): 275–8. doi:10.1083/jcb.131.2.275. PMID 7593158.  
  6. ^ a b Lolis E, Petsko GA (1990). "Transition-state analogues in protein crystallography: probes of the structural source of enzyme catalysis". Annual Review of Biochemistry 59: 597–630. doi:10.1146/annurev.bi.59.070190.003121. PMID 2197984.  
  7. ^ "'Sheddase' helps the malaria parasite invade red blood cells". http://malaria.wellcome.ac.uk/doc_WTD023958.html.  
  8. ^ Liu PC, Liu X, Li Y, et al (June 2006). "Identification of ADAM10 as a major source of HER2 ectodomain sheddase activity in HER2 overexpressing breast cancer cells". Cancer Biology & Therapy 5 (6): 657–64. PMID 16627989.  

Further reading

  • Wolfsberg TG, Primakoff P, Myles DG, White JM (1995). "ADAM, a novel family of membrane proteins containing A Disintegrin And Metalloprotease domain: multipotential functions in cell-cell and cell-matrix interactions.". J. Cell Biol. 131 (2): 275–8. doi:10.1083/jcb.131.2.275. PMID 7593158.  
  • O'Bryan JP, Fridell YW, Koski R, et al. (1995). "The transforming receptor tyrosine kinase, Axl, is post-translationally regulated by proteolytic cleavage.". J. Biol. Chem. 270 (2): 551–7. doi:10.1074/jbc.270.2.551. PMID 7822279.  
  • Howard L, Lu X, Mitchell S, et al. (1996). "Molecular cloning of MADM: a catalytically active mammalian disintegrin-metalloprotease expressed in various cell types.". Biochem. J. 317 ( Pt 1): 45–50. PMID 8694785.  
  • McKie N, Edwards T, Dallas DJ, et al. (1997). "Expression of members of a novel membrane linked metalloproteinase family (ADAM) in human articular chondrocytes.". Biochem. Biophys. Res. Commun. 230 (2): 335–9. doi:10.1006/bbrc.1996.5957. PMID 9016778.  
  • Rosendahl MS, Ko SC, Long DL, et al. (1997). "Identification and characterization of a pro-tumor necrosis factor-alpha-processing enzyme from the ADAM family of zinc metalloproteases.". J. Biol. Chem. 272 (39): 24588–93. doi:10.1074/jbc.272.39.24588. PMID 9305925.  
  • Yamazaki K, Mizui Y, Tanaka I (1998). "Radiation hybrid mapping of human ADAM10 gene to chromosome 15.". Genomics 45 (2): 457–9. doi:10.1006/geno.1997.4910. PMID 9344679.  
  • Yamazaki K, Mizui Y, Sagane K, Tanaka I (1998). "Assignment of a disintegrin and metalloproteinase domain 10 (Adam10) gene to mouse chromosome 9.". Genomics 46 (3): 528–9. doi:10.1006/geno.1997.5043. PMID 9441766.  
  • Yavari R, Adida C, Bray-Ward P, et al. (1999). "Human metalloprotease-disintegrin Kuzbanian regulates sympathoadrenal cell fate in development and neoplasia.". Hum. Mol. Genet. 7 (7): 1161–7. doi:10.1093/hmg/7.7.1161. PMID 9618175.  
  • Dallas DJ, Genever PG, Patton AJ, et al. (1999). "Localization of ADAM10 and Notch receptors in bone.". Bone 25 (1): 9–15. doi:10.1016/S8756-3282(99)00099-X. PMID 10423016.  
  • Dias Neto E, Correa RG, Verjovski-Almeida S, et al. (2000). "Shotgun sequencing of the human transcriptome with ORF expressed sequence tags.". Proc. Natl. Acad. Sci. U.S.A. 97 (7): 3491–6. doi:10.1073/pnas.97.7.3491. PMID 10737800.  
  • Hattori M, Osterfield M, Flanagan JG (2000). "Regulated cleavage of a contact-mediated axon repellent.". Science 289 (5483): 1360–5. doi:10.1126/science.289.5483.1360. PMID 10958785.  
  • Vincent B, Paitel E, Saftig P, et al. (2001). "The disintegrins ADAM10 and TACE contribute to the constitutive and phorbol ester-regulated normal cleavage of the cellular prion protein.". J. Biol. Chem. 276 (41): 37743–6. doi:10.1074/jbc.M105677200. PMID 11477090.  
  • Chubinskaya S, Mikhail R, Deutsch A, Tindal MH (2001). "ADAM-10 protein is present in human articular cartilage primarily in the membrane-bound form and is upregulated in osteoarthritis and in response to IL-1alpha in bovine nasal cartilage.". J. Histochem. Cytochem. 49 (9): 1165–76. PMID 11511685.  
  • Lemjabbar H, Basbaum C (2002). "Platelet-activating factor receptor and ADAM10 mediate responses to Staphylococcus aureus in epithelial cells.". Nat. Med. 8 (1): 41–6. doi:10.1038/nm0102-41. PMID 11786905.  
  • Arndt M, Lendeckel U, Röcken C, et al. (2002). "Altered expression of ADAMs (A Disintegrin And Metalloproteinase) in fibrillating human atria.". Circulation 105 (6): 720–5. doi:10.1161/hc0602.103639. PMID 11839628.  
  • Colciaghi F, Borroni B, Pastorino L, et al. (2002). "[alpha]-Secretase ADAM10 as well as [alpha]APPs is reduced in platelets and CSF of Alzheimer disease patients.". Mol. Med. 8 (2): 67–74. PMID 12080182.  
  • Lim R, Winteringham LN, Williams JH, et al. (2002). "MADM, a novel adaptor protein that mediates phosphorylation of the 14-3-3 binding site of myeloid leukemia factor 1.". J. Biol. Chem. 277 (43): 40997–1008. doi:10.1074/jbc.M206041200. PMID 12176995.  
  • Gatta LB, Albertini A, Ravid R, Finazzi D (2003). "Levels of beta-secretase BACE and alpha-secretase ADAM10 mRNAs in Alzheimer hippocampus.". Neuroreport 13 (16): 2031–3. doi:10.1097/00001756-200211150-00008. PMID 12438920.  
  • Gutwein P, Mechtersheimer S, Riedle S, et al. (2003). "ADAM10-mediated cleavage of L1 adhesion molecule at the cell surface and in released membrane vesicles.". FASEB J. 17 (2): 292–4. doi:10.1096/fj.02-0430fje. PMID 12475894.  

This article incorporates text from the United States National Library of Medicine, which is in the public domain.


Advertisements






Got something to say? Make a comment.
Your name
Your email address
Message