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Title: Cd29  
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Subject: CD49c, Integrin, CD18, ITGAD, CD49a
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Integrin, beta 1 (fibronectin receptor, beta polypeptide, antigen CD29 includes MDF2, MSK12)

Rendering based on PDB .
Available structures
PDB Ortholog search: PDBe, RCSB
External IDs ChEMBL: GeneCards:
RNA expression pattern
Species Human Mouse
RefSeq (mRNA)
RefSeq (protein)
Location (UCSC)
PubMed search

Integrin beta-1 is a protein that in humans is encoded by the ITGB1 gene.[1] CD29 is an integrin unit associated with very late antigen receptors. It is known to conjoin with alpha-3 subunit to create α3β1 complex that reacts to such molecules as netrin-1 and reelin.

Integrins are heterodimeric proteins made up of alpha and beta subunits. At least 18 alpha and 8 beta subunits have been described in mammals. Integrin family members are membrane receptors involved in cell adhesion and recognition in a variety of processes including embryogenesis, hemostasis, tissue repair, immune response and metastatic diffusion of tumor cells. The protein encoded by this gene is a beta subunit. Six alternatively spliced variants have been found for this gene which encode five proteins with alternate carboxy termini.[2]


  • Interactions 1
  • References 2
  • Further reading 3
  • External links 4


CD29 has been shown to interact with TSPAN4,[3] CD9,[4][5] Filamin,[6][7] FLNB,[6] CD81,[5][8] CD46,[9] MAP4K4,[10] FHL2,[11] NME1,[12] PKC alpha,[13][14] YWHAB,[15] ITGB1BP1,[16][17] LGALS8[18] and GNB2L1.[13][19] A neutralizing antibody for CD29 is AIIB2.


  1. ^ Goodfellow PJ, Nevanlinna HA, Gorman P, Sheer D, Lam G, Goodfellow PN (July 1989). "Assignment of the gene encoding the beta-subunit of the human fibronectin receptor (beta-FNR) to chromosome 10p11.2". Ann Hum Genet 53 (Pt 1): 15–22.  
  2. ^ "Entrez Gene: ITGB1 integrin, beta 1 (fibronectin receptor, beta polypeptide, antigen CD29 includes MDF2, MSK12)". 
  3. ^ Tachibana, I; Bodorova J; Berditchevski F; Zutter M M; Hemler M E (November 1997). "NAG-2, a novel transmembrane-4 superfamily (TM4SF) protein that complexes with integrins and other TM4SF proteins". J. Biol. Chem. (UNITED STATES) 272 (46): 29181–9.  
  4. ^ Radford, K J; Thorne R F; Hersey P (May 1996). "CD63 associates with transmembrane 4 superfamily members, CD9 and CD81, and with beta 1 integrins in human melanoma". Biochem. Biophys. Res. Commun. (UNITED STATES) 222 (1): 13–8.  
  5. ^ a b Mazzocca, Antonio; Carloni Vinicio; Sciammetta Silvia; Cordella Claudia; Pantaleo Pietro; Caldini Anna; Gentilini Paolo; Pinzani Massimo (September 2002). "Expression of transmembrane 4 superfamily (TM4SF) proteins and their role in hepatic stellate cell motility and wound healing migration". J. Hepatol. (England) 37 (3): 322–30.  
  6. ^ a b van der Flier, Arjan; Kuikman Ingrid; Kramer Duco; Geerts Dirk; Kreft Maaike; Takafuta Toshiro; Shapiro Sandor S; Sonnenberg Arnoud (January 2002). "Different splice variants of filamin-B affect myogenesis, subcellular distribution, and determine binding to integrin β subunits". J. Cell Biol. (United States) 156 (2): 361–76.  
  7. ^ Loo, D T; Kanner S B; Aruffo A (September 1998). "Filamin binds to the cytoplasmic domain of the beta1-integrin. Identification of amino acids responsible for this interaction". J. Biol. Chem. (UNITED STATES) 273 (36): 23304–12.  
  8. ^ Serru, V; Le Naour F; Billard M; Azorsa D O; Lanza F; Boucheix C; Rubinstein E (May 1999). "Selective tetraspan-integrin complexes (CD81/alpha4beta1, CD151/alpha3beta1, CD151/alpha6beta1) under conditions disrupting tetraspan interactions". Biochem. J. (ENGLAND) 340 (Pt 1): 103–11.  
  9. ^ Lozahic, S; Christiansen D; Manié S; Gerlier D; Billard M; Boucheix C; Rubinstein E (March 2000). "CD46 (membrane cofactor protein) associates with multiple beta1 integrins and tetraspans". Eur. J. Immunol. (GERMANY) 30 (3): 900–7.  
  10. ^ Poinat, Patrice; De Arcangelis Adèle, Sookhareea Satis, Zhu Xiaoping, Hedgecock Edward M, Labouesse Michel, Georges-Labouesse Elisabeth (April 2002). "A conserved interaction between beta1 integrin/PAT-3 and Nck-interacting kinase/MIG-15 that mediates commissural axon navigation in C. elegans". Curr. Biol. (England) 12 (8): 622–31.  
  11. ^ Wixler, V; Geerts D; Laplantine E; Westhoff D; Smyth N; Aumailley M; Sonnenberg A; Paulsson M (October 2000). "The LIM-only protein DRAL/FHL2 binds to the cytoplasmic domain of several alpha and beta integrin chains and is recruited to adhesion complexes". J. Biol. Chem. (UNITED STATES) 275 (43): 33669–78.  
  12. ^ Fournier, Henri-Noël; Dupé-Manet Sandra, Bouvard Daniel, Lacombe Marie-Lise, Marie Christiane, Block Marc R, Albiges-Rizo Corinne (June 2002). "Integrin cytoplasmic domain-associated protein 1alpha (ICAP-1alpha ) interacts directly with the metastasis suppressor nm23-H2, and both proteins are targeted to newly formed cell adhesion sites upon integrin engagement". J. Biol. Chem. (United States) 277 (23): 20895–902.  
  13. ^ a b Lee, H-S; Millward-Sadler S J; Wright M O; Nuki G; Al-Jamal R; Salter D M (November 2002). "Activation of Integrin-RACK1/PKCalpha signalling in human articular chondrocyte mechanotransduction". Osteoarthr. Cartil. (England) 10 (11): 890–7.  
  14. ^ Parsons, Maddy; Keppler Melanie D, Kline Adam, Messent Anthea, Humphries Martin J, Gilchrist Ruth, Hart Ian R, Quittau-Prevostel Corinne, Hughes William E, Parker Peter J, Ng Tony (August 2002). "Site-Directed Perturbation of Protein Kinase C- Integrin Interaction Blocks Carcinoma Cell Chemotaxis". Mol. Cell. Biol. (United States) 22 (16): 5897–911.  
  15. ^ Han, D C; Rodriguez L G; Guan J L (January 2001). "Identification of a novel interaction between integrin beta1 and 14-3-3beta". Oncogene (England) 20 (3): 346–57.  
  16. ^ Chang, D D; Wong C; Smith H; Liu J (September 1997). "ICAP-1, a Novel β1 Integrin Cytoplasmic Domain–associated Protein, Binds to a Conserved and Functionally Important NPXY Sequence Motif of β1 Integrin". J. Cell Biol. (UNITED STATES) 138 (5): 1149–57.  
  17. ^ Chang, David D; Hoang Bao Q; Liu Jenny; Springer Timothy A (March 2002). "Molecular basis for interaction between Icap1 alpha PTB domain and beta 1 integrin". J. Biol. Chem. (United States) 277 (10): 8140–5.  
  18. ^ Hadari, Y R; Arbel-Goren R; Levy Y; Amsterdam A; Alon R; Zakut R; Zick Y (July 2000). "Galectin-8 binding to integrins inhibits cell adhesion and induces apoptosis". J. Cell. Sci. (ENGLAND). 113 ( Pt 13): 2385–97.  
  19. ^ Liliental, J; Chang D D (January 1998). "Rack1, a receptor for activated protein kinase C, interacts with integrin beta subunit". J. Biol. Chem. (UNITED STATES) 273 (4): 2379–83.  

Further reading

  • Evans JP (2001). "Fertilin beta and other ADAMs as integrin ligands: insights into cell adhesion and fertilization". Bioessays 23 (7): 628–39.  
  • Armulik A (2002). "Splice variants of human beta 1 integrins: origin, biosynthesis and functions". Front. Biosci. 7: d219–27.  
  • Brakebusch C, Fässler R (2006). "beta 1 integrin function in vivo: adhesion, migration and more". Cancer Metastasis Rev. 24 (3): 403–11.  

External links

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