• The alphaM subunit of integrin Mac-1 contains several distinct regions in its extracellular segment. (embl.de)
  • Integrators of epidermal growth and differentiation: distinct functions for beta 1 and beta 4 integrins. (embl.de)
  • Integrins are heterodimeric integral membrane glycoproteins composed of a distinct alpha chain and a common beta chain. (wikidoc.org)
  • Our data provide new insights into how different domains in the integrin alpha and beta subunits may interact. (embl.de)
  • The proposed VWA domains in integrin beta subunits have recently been substantiated using sequence-based methods. (embl.de)
  • Integrin alpha (beta-propellor repeats). (embl.de)
  • Alpha integrins are proposed to contain a domain containing a 7-fold repeat that adopts a beta-propellor fold. (embl.de)
  • The structure of the beta-propeller domain and C-terminal region of the integrin alphaM subunit. (embl.de)
  • Integrin alpha-2 or CD49b (cluster of differentiation 49b) is a protein which in humans is encoded by the CD49b gene . (wikidoc.org)
  • The CD49b protein is an integrin alpha subunit. (wikidoc.org)
  • Integrins are cell adhesion molecules that mediate cell-extracellular matrix and cell-cell interactions. (embl.de)
  • Integrins are involved in cell adhesion and also participate in cell-surface mediated signalling. (wikidoc.org)
  • Integrin cytoplasmic domains are normally less than 50 amino acids in length, with the beta-subunit sequences exhibiting greater homology to each other than the alpha-subunit sequences. (embl-heidelberg.de)
  • Inside-out signaling takes place upon association of intracellular activators ( e.g. , talin, kindlins) with integrin cytoplasmic domains, leading to transition of integrin conformation to high affinity for binding ligands. (biomedcentral.com)
  • Upon ligand binding, integrins undergo clustering and transmit their outside-in signals to the cytoplasmic domains, leading to forming focal adhesions that connect to actin filaments for many cellular processes. (biomedcentral.com)
  • We are involved in several collaborative applications in various fields including immunological protein complexes, viral proteins, membrane receptor complexes, and eye lens crystallins. (nih.gov)
  • An integrin receptor is a heterodimer composed of alpha and beta subunits. (embl-heidelberg.de)
  • Integrins frequently intercommunicate, and binding at one integrin receptor activate or inhibit another. (embl-heidelberg.de)
  • An invariant T cell receptor alpha chain is used by a unique subset of major histocompatibility complex class I-specific CD4+ and CD4-8- T cells in mice and humans. (uchicago.edu)
  • Many integrins require activation on the cell surface before they can bind ligands. (embl-heidelberg.de)
  • The integrin activation by chemokine enables abrupt arrest of cells on endothelial integrin ligands. (biomedcentral.com)
  • Binding of chemokines to G protein-coupled receptors (GPCRs) triggers rapid arrest of rolling leukocytes in which leukocyte integrins ( e.g. , αLβ2 or α4β1) are activated to adhere to the ligands such as intercellular adhesion molecule 1 (ICAM1) or vascular cell-adhesion molecule 1 (VCAM1) on endothelial cells [ 65 ]. (biomedcentral.com)
  • Integrins mediate leukocyte accumulation to the sites of inflammation, thereby enhancing their potential as an important therapeutic target for inflammatory disorders. (biomedcentral.com)
  • Portion of beta integrins that lies N-terminal to their EGF-like repeats. (embl-heidelberg.de)
  • Some members of this family have EGF repeats at the C terminus and also have a vWA domain inserted within the integrin domain at the N terminus. (embl-heidelberg.de)
  • Integrin alpha (beta-propellor repeats). (embl.de)
  • They are heterodimeric complexes, each containing a unique alpha-subunit noncovalently associated with a common beta-subunit. (johnshopkins.edu)
  • A subset of four mAbs that reacted with the alphaM/beta2 complex but not with the unassociated alphaM subunit were mapped to one subregion, residues 718-759, and five other mAbs that recognized both the unassociated and the complexed alphaM subunit were localized to three other subregions, residues 599-679, 820-882, and 943-1047. (embl.de)
  • Integrins are cell adhesion molecules that mediate cell-extracellular matrix and cell-cell interactions. (embl-heidelberg.de)
  • While integrins are expressed virtually in all cell types, a subset of integrins including αLβ2, αMβ2, α4β1, and α4β7 are predominantly expressed on leukocytes, thereby regulating immune cell trafficking to lymphoid tissues and sites of inflammation. (biomedcentral.com)
  • The alphaM subunit of integrin Mac-1 contains several distinct regions in its extracellular segment. (embl.de)
  • While typical integrin antagonists that block integrin activation target the initiation of leukocyte migration, a novel class of experimental compounds has been designed to block integrin deactivation, thereby perturbing the progression of cell migration. (biomedcentral.com)
  • Here we review the molecular mechanisms that regulate integrin activation and deactivation. (biomedcentral.com)
  • The structure of the beta-propeller domain and C-terminal region of the integrin alphaM subunit. (embl.de)
  • Integrins on resting cells are maintained in a default inactive state, in which the headpiece is folded back to the leg pieces [ 8 ], thereby exhibiting a bent conformation (Fig. 1a ). (biomedcentral.com)
  • Beta integrins are proposed to have a von Willebrand factor type-A "insert" or "I" -like domain (although this remains to be confirmed). (embl-heidelberg.de)