Entry Database : PDB / ID : 1xk4 Structure visualization Downloads & linksTitle Crystal structure of human calprotectin(S100A8/S100A9) ComponentsCalgranulin A Calgranulin B DetailsKeywords METAL BINDING PROTEIN / S100 family / heterotetramerFunction / homology Function and homology informationFunction Domain/homology Component
S100A8 complex / S100A9 complex / neutrophil aggregation / calprotectin complex / positive regulation of peptide secretion / modulation of process of another organism / regulation of respiratory burst involved in inflammatory response / autocrine signaling / chronic inflammatory response / peptidyl-cysteine S-trans-nitrosylation ... S100A8 complex / S100A9 complex / neutrophil aggregation / calprotectin complex / positive regulation of peptide secretion / modulation of process of another organism / regulation of respiratory burst involved in inflammatory response / autocrine signaling / chronic inflammatory response / peptidyl-cysteine S-trans-nitrosylation / Toll-like receptor 4 binding / peptidyl-cysteine S-nitrosylation / Metal sequestration by antimicrobial proteins / RAGE receptor binding / peptide secretion / leukocyte migration involved in inflammatory response / Regulation of TLR by endogenous ligand / astrocyte development / intermediate filament cytoskeleton / MyD88 deficiency (TLR2/4) / arachidonate binding / IRAK4 deficiency (TLR2/4) / MyD88:MAL(TIRAP) cascade initiated on plasma membrane / regulation of toll-like receptor signaling pathway / response to zinc ion / regulation of cytoskeleton organization / antioxidant activity / RHO GTPases Activate NADPH Oxidases / defense response to fungus / endothelial cell migration / positive regulation of intrinsic apoptotic signaling pathway / neutrophil chemotaxis / positive regulation of neuron projection development / autophagy / positive regulation of inflammatory response / antimicrobial humoral immune response mediated by antimicrobial peptide / calcium-dependent protein binding / positive regulation of NF-kappaB transcription factor activity / cell-cell signaling / ER-Phagosome pathway / positive regulation of cell growth / microtubule binding / : / secretory granule lumen / response to lipopolysaccharide / response to ethanol / cytoskeleton / defense response to bacterium / inflammatory response / innate immune response / apoptotic process / calcium ion binding / Neutrophil degranulation / extracellular space / extracellular exosome / extracellular region / zinc ion binding / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function S-100/ICaBP type calcium binding protein signature. / S100/Calcium binding protein 7/8-like, conserved site / S100/CaBP-9k-type, calcium binding, subdomain / S-100/ICaBP type calcium binding domain / S-100/ICaBP type calcium binding domain / EF-hand / Recoverin; domain 1 / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. ... S-100/ICaBP type calcium binding protein signature. / S100/Calcium binding protein 7/8-like, conserved site / S100/CaBP-9k-type, calcium binding, subdomain / S-100/ICaBP type calcium binding domain / S-100/ICaBP type calcium binding domain / EF-hand / Recoverin; domain 1 / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair / Orthogonal Bundle / Mainly Alpha Similarity search - Domain/homologyBiological species Homo sapiens (human)Method X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution : 1.8 Å DetailsAuthors Korndoerfer, I.P. / Brueckner, F. / Skerra, A. CitationJournal : J.Mol.Biol. / Year : 2007Title : The crystal structure of the human (S100A8/S100A9)2 heterotetramer, calprotectin, illustrates how conformational changes of interacting alpha-helices can determine specific association of two EF-hand proteinsAuthors : Korndoerfer, I.P. / Brueckner, F. / Skerra, A. History Deposition Sep 26, 2004 Deposition site : RCSB / Processing site : PDBJRevision 1.0 Oct 18, 2005 Provider : repository / Type : Initial releaseRevision 1.1 Apr 30, 2008 Group : Version format complianceRevision 1.2 Jul 13, 2011 Group : Advisory / Version format complianceRevision 1.3 Feb 25, 2015 Group : Database referencesRevision 1.4 Oct 25, 2023 Group : Data collection / Database references ... Data collection / Database references / Derived calculations / Refinement description Category : chem_comp_atom / chem_comp_bond ... chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_ncs_dom_lim / struct_ref_seq_dif / struct_site Item : _database_2.pdbx_DOI / _database_2.pdbx_database_accession ... _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id / _struct_ncs_dom_lim.beg_label_seq_id / _struct_ncs_dom_lim.end_auth_comp_id / _struct_ncs_dom_lim.end_label_asym_id / _struct_ncs_dom_lim.end_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
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