Entry Database : PDB / ID : 2win Structure visualization Downloads & linksTitle C3 convertase (C3bBb) stabilized by SCIN ComponentsCOMPLEMENT C3 BETA CHAIN COMPLEMENT C3B ALPHA' CHAIN COMPLEMENT FACTOR B STAPHYLOCOCCAL COMPLEMENT INHIBITOR DetailsKeywords IMMUNE SYSTEM / SERINE PROTEASE / IMMUNE RESPONSE / INNATE IMMUNITY / ZYMOGEN / SECRETED / PROTEASE / GLYCATION / ALTERNATIVE PATHWAY / DISEASE MUTATION / HYDROLASE / CONVERTASE / COMPLEMENT / POLYMORPHISM / IMMUNE EVASIONFunction / homology Function and homology informationFunction Domain/homology Component
alternative-complement-pathway C3/C5 convertase / complement binding / C5L2 anaphylatoxin chemotactic receptor binding / regulation of triglyceride biosynthetic process / positive regulation of activation of membrane attack complex / vertebrate eye-specific patterning / positive regulation of apoptotic cell clearance / Alternative complement activation / complement-mediated synapse pruning / positive regulation of lipid storage ... alternative-complement-pathway C3/C5 convertase / complement binding / C5L2 anaphylatoxin chemotactic receptor binding / regulation of triglyceride biosynthetic process / positive regulation of activation of membrane attack complex / vertebrate eye-specific patterning / positive regulation of apoptotic cell clearance / Alternative complement activation / complement-mediated synapse pruning / positive regulation of lipid storage / Activation of C3 and C5 / positive regulation of phagocytosis, engulfment / complement activation, GZMK pathway / positive regulation of G protein-coupled receptor signaling pathway / symbiont cell surface / positive regulation of D-glucose transmembrane transport / complement activation / complement receptor mediated signaling pathway / complement activation, alternative pathway / neuron remodeling / endopeptidase inhibitor activity / amyloid-beta clearance / B cell activation / positive regulation of vascular endothelial growth factor production / complement activation, classical pathway / response to bacterium / Purinergic signaling in leishmaniasis infection / fatty acid metabolic process / Regulation of Complement cascade / Peptide ligand-binding receptors / Post-translational protein phosphorylation / positive regulation of receptor-mediated endocytosis / positive regulation of protein phosphorylation / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / positive regulation of angiogenesis / azurophil granule lumen / secretory granule lumen / blood microparticle / G alpha (i) signalling events / immune response / inflammatory response / G protein-coupled receptor signaling pathway / endoplasmic reticulum lumen / receptor ligand activity / serine-type endopeptidase activity / signaling receptor binding / Neutrophil degranulation / cell surface / signal transduction / protein-containing complex / proteolysis / : / extracellular exosome / extracellular region / plasma membrane Similarity search - Function Staphylococcal complement inhibitor SCIN / Staphylococcal complement inhibitor SCIN / Jelly Rolls - #1540 / N-terminal domain of TfIIb - #160 / S-adenosyl-L-methionine-dependent methyltransferases - #20 / Alpha-macroglobulin, receptor-binding domain / Complement factor B / S-adenosyl-L-methionine-dependent methyltransferases / Macroglobulin (MG2) domain / Immunoglobulin-like - #1940 ... Staphylococcal complement inhibitor SCIN / Staphylococcal complement inhibitor SCIN / Jelly Rolls - #1540 / N-terminal domain of TfIIb - #160 / S-adenosyl-L-methionine-dependent methyltransferases - #20 / Alpha-macroglobulin, receptor-binding domain / Complement factor B / S-adenosyl-L-methionine-dependent methyltransferases / Macroglobulin (MG2) domain / Immunoglobulin-like - #1940 / Complement B/C2 / OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #120 / Substrate Binding Domain Of Dnak; Chain:A; Domain 2 - #10 / N-terminal domain of TfIIb / Complement C3-like, NTR domain / : / : / Complement component 3, CUB domain, second segment / Complement component 3, CUB domain, first segment / Alpha-2-macroglobulin, conserved site / Alpha-2-macroglobulin family thiolester region signature. / : / Alpha-macro-globulin thiol-ester bond-forming region / Complement C3/4/5, macroglobulin domain MG1 / Macroglobulin domain MG1 / Anaphylatoxin, complement system domain / Glycosyltransferase - #20 / Anaphylatoxin domain signature. / Anaphylatoxin, complement system / Anaphylatoxin/fibulin / Anaphylotoxin-like domain / Anaphylatoxin domain profile. / Anaphylatoxin homologous domain / Netrin C-terminal Domain / Netrin module, non-TIMP type / UNC-6/NTR/C345C module / Macroglobulin domain MG4 / Macroglobulin domain MG4 / Alpha-macroglobulin, receptor-binding / Alpha-macroglobulin, receptor-binding domain superfamily / Macroglobulin domain MG3 / : / A-macroglobulin receptor binding domain / Macroglobulin domain MG3 / A-macroglobulin receptor / Netrin domain / NTR domain profile. / Alpha-2-macroglobulin / Macroglobulin domain / Alpha-2-macroglobulin, bait region domain / Alpha-macroglobulin-like, TED domain / Alpha-2-macroglobulin family / MG2 domain / A-macroglobulin TED domain / Alpha-2-macroglobulin bait region domain / Alpha-2-Macroglobulin / Alpha-2-macroglobulin family / Tissue inhibitor of metalloproteinases-like, OB-fold / von Willebrand factor, type A domain / Other non-globular / Substrate Binding Domain Of Dnak; Chain:A; Domain 2 / Heat shock protein 70kD, C-terminal domain superfamily / Sushi repeat (SCR repeat) / Domain abundant in complement control proteins; SUSHI repeat; short complement-like repeat (SCR) / Sushi/SCR/CCP domain / Sushi/CCP/SCR domain profile. / Sushi/SCR/CCP superfamily / von Willebrand factor type A domain / Terpenoid cyclases/protein prenyltransferase alpha-alpha toroid / Glycosyltransferase / Alpha/alpha barrel / VWFA domain profile. / Single Sheet / von Willebrand factor (vWF) type A domain / von Willebrand factor, type A / von Willebrand factor A-like domain superfamily / Special / OB fold (Dihydrolipoamide Acetyltransferase, E2P) / Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Serine proteases, trypsin family, histidine active site. / Serine proteases, trypsin family, serine active site. / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin domain profile. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Trypsin-like serine proteases / Thrombin, subunit H / Jelly Rolls / Immunoglobulin-like fold / Immunoglobulins / Peptidase S1, PA clan / Up-down Bundle / Beta Barrel / Immunoglobulin-like / Sandwich / Rossmann fold / 3-Layer(aba) Sandwich / Mainly Beta Similarity search - Domain/homology beta-D-mannopyranose / alpha-D-mannopyranose / Complement factor B / Complement C3 / Staphylococcal complement inhibitor Similarity search - ComponentBiological species HOMO SAPIENS (human)STAPHYLOCOCCUS AUREUS (bacteria)Method X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution : 3.9 Å DetailsAuthors Wu, J. / Janssen, B.J. / Gros, P. CitationJournal : Nat. Immunol. / Year : 2009Title : Structural and functional implications of the alternative complement pathway C3 convertase stabilized by a staphylococcal inhibitor.Authors : Rooijakkers, S.H. / Wu, J. / Ruyken, M. / van Domselaar, R. / Planken, K.L. / Tzekou, A. / Ricklin, D. / Lambris, J.D. / Janssen, B.J. / van Strijp, J.A. / Gros, P. History Deposition May 13, 2009 Deposition site : PDBE / Processing site : PDBERevision 1.0 Jun 9, 2009 Provider : repository / Type : Initial releaseRevision 1.1 May 8, 2011 Group : Version format complianceRevision 1.2 Jul 13, 2011 Group : Version format complianceRevision 1.3 Jan 17, 2018 Group : Advisory / Database references / Source and taxonomyCategory : citation / citation_author ... citation / citation_author / entity_src_gen / pdbx_unobs_or_zero_occ_residues Item : _citation.journal_abbrev / _citation.journal_id_ISSN ... _citation.journal_abbrev / _citation.journal_id_ISSN / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.title / _citation_author.name / _entity_src_gen.pdbx_host_org_strain Revision 2.0 Jul 29, 2020 Group : Advisory / Atomic model ... Advisory / Atomic model / Data collection / Derived calculations / Non-polymer description / Structure summary Category : atom_site / chem_comp ... atom_site / chem_comp / database_PDB_caveat / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / pdbx_validate_chiral / pdbx_validate_close_contact / struct_asym / struct_conn / struct_site / struct_site_gen Item : _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ... _atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.type / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _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_asym_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_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 / _pdbx_unobs_or_zero_occ_atoms.label_asym_id / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_comp_id_2 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _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_asym_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 Description : Carbohydrate remediation / Provider : repository / Type : RemediationRevision 2.1 Dec 13, 2023 Group : Advisory / Data collection ... Advisory / Data collection / Database references / Refinement description / Structure summary Category : chem_comp / chem_comp_atom ... chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_unobs_or_zero_occ_residues Item : _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accessionRevision 3.0 Oct 1, 2025 Group : Advisory / Atomic model ... Advisory / Atomic model / Data collection / Derived calculations / Structure summary Category : atom_site / entity ... atom_site / entity / pdbx_entity_nonpoly / pdbx_entry_details / pdbx_modification_feature / pdbx_nonpoly_scheme / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / pdbx_validate_chiral / pdbx_validate_close_contact / struct_asym / struct_conn Item : _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ... _atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _pdbx_entity_nonpoly.comp_id / _pdbx_entity_nonpoly.name / _pdbx_nonpoly_scheme.auth_mon_id / _pdbx_nonpoly_scheme.auth_seq_num / _pdbx_nonpoly_scheme.entity_id / _pdbx_nonpoly_scheme.mon_id / _pdbx_nonpoly_scheme.pdb_mon_id / _pdbx_nonpoly_scheme.pdb_seq_num / _pdbx_nonpoly_scheme.pdb_strand_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_unobs_or_zero_occ_atoms.auth_asym_id / _pdbx_unobs_or_zero_occ_atoms.auth_comp_id / _pdbx_unobs_or_zero_occ_atoms.auth_seq_id / _pdbx_unobs_or_zero_occ_atoms.label_comp_id / _pdbx_validate_chiral.auth_seq_id / _struct_asym.entity_id
Show all Show less Remark 700 SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "IB" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "IB" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 5-STRANDED BARREL THIS IS REPRESENTED BY A 6-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEETS PRESENTED AS "JB" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 5-STRANDED BARREL THIS IS REPRESENTED BY A 6-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEETS PRESENTED AS "KB" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 5-STRANDED BARREL THIS IS REPRESENTED BY A 6-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEETS PRESENTED AS "LB" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 5-STRANDED BARREL THIS IS REPRESENTED BY A 6-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, TWO SHEETS ARE DEFINED.