IntAct European Bioinformatics Institute IntAct intact http://www.ebi.ac.uk/ http://www.ebi.ac.uk/intact/query/${ac} EBI-[0-9]+|IA:[0-9]+ INTerAction database (IntAct) provides an open source database and toolkit for the storage, presentation and analysis of molecular interactions. http://www.ebi.ac.uk/intact European Bioinformatics Institute; Wellcome Trust Genome Campus; Hinxton, Cambridge; CB10 1SD; United Kingdom http://www.ebi.ac.uk/intact/ http://www.ebi.ac.uk/ van-2011-28 in vitro In vitro x-ray diffraction x-ray crystallography X-ray X-ray x-ray diffraction predetermined predetermined participant predetermined van den Elsen JM., Isenman DE. d.isenman@utoronto.ca Science (New York, N.Y.) 2011 Only protein-protein interactions imex curation imex curation van-2011-29 in vitro In vitro spr surface plasmon resonance Optical biosensor BIAcore(r) BIAcore(r) Optical biosensor spr predetermined predetermined participant predetermined van den Elsen JM., Isenman DE. d.isenman@utoronto.ca Science (New York, N.Y.) 2011 Only protein-protein interactions imex curation imex curation cr2_human Complement receptor type 2 CR2 C3DR Complement C3d receptor Epstein-Barr virus receptor protein protein human Homo sapiens Human MGAAGLLGVFLALVAPGVLGISCGSPPPILNGRISYYSTPIAVGTVIRYSCSGTFRLIGEKSLLCITKDKVDGTWDKPAPKCEYFNKYSSCPEPIVPGGYKIRGSTPYRHGDSVTFACKTNFSMNGNKSVWCQANNMWGPTRLPTCVSVFPLECPALPMIHNGHHTSENVGSIAPGLSVTYSCESGYLLVGEKIINCLSSGKWSAVPPTCEEARCKSLGRFPNGKVKEPPILRVGVTANFFCDEGYRLQGPPSSRCVIAGQGVAWTKMPVCEEIFCPSPPPILNGRHIGNSLANVSYGSIVTYTCDPDPEEGVNFILIGESTLRCTVDSQKTGTWSGPAPRCELSTSAVQCPHPQILRGRMVSGQKDRYTYNDTVIFACMFGFTLKGSKQIRCNAQGTWEPSAPVCEKECQAPPNILNGQKEDRHMVRFDPGTSIKYSCNPGYVLVGEESIQCTSEGVWTPPVPQCKVAACEATGRQLLTKPQHQFVRPDVNSSCGEGYKLSGSVYQECQGTIPWFMEIRLCKEITCPPPPVIYNGAHTGSSLEDFPYGTTVTYTCNPGPERGVEFSLIGESTIRCTSNDQERGTWSGPAPLCKLSLLAVQCSHVHIANGYKISGKEAPYFYNDTVTFKCYSGFTLKGSSQIRCKADNTWDPEIPVCEKETCQHVRQSLQELPAGSRVELVNTSCQDGYQLTGHAYQMCQDAENGIWFKKIPLCKVIHCHPPPVIVNGKHTGMMAENFLYGNEVSYECDQGFYLLGEKKLQCRSDSKGHGSWSGPSPQCLRSPPVTRCPNPEVKHGYKLNKTHSAYSHNDIVYVDCNPGFIMNGSRVIRCHTDNTWVPGVPTCIKKAFIGCPPPPKTPNGNHTGGNIARFSPGMSILYSCDQGYLLVGEALLLCTHEGTWSQPAPHCKEVNCSSPADMDGIQKGLEPRKMYQYGAVVTLECEDGYMLEGSPQSQCQSDHQWNPPLAVCRSRSLAPVLCGIAAGLILLTFLIVITLYVISKHRARNYYTDTSQKEAFHLEAREVYSVDPYNPAS co3_human Complement C3 C3 CPAMD1 C3 and PZP-like alpha-2-macroglobulin domain-containing protein 1 protein protein human Homo sapiens Human MGPTSGPSLLLLLLTHLPLALGSPMYSIITPNILRLESEETMVLEAHDAQGDVPVTVTVHDFPGKKLVLSSEKTVLTPATNHMGNVTFTIPANREFKSEKGRNKFVTVQATFGTQVVEKVVLVSLQSGYLFIQTDKTIYTPGSTVLYRIFTVNHKLLPVGRTVMVNIENPEGIPVKQDSLSSQNQLGVLPLSWDIPELVNMGQWKIRAYYENSPQQVFSTEFEVKEYVLPSFEVIVEPTEKFYYIYNEKGLEVTITARFLYGKKVEGTAFVIFGIQDGEQRISLPESLKRIPIEDGSGEVVLSRKVLLDGVQNPRAEDLVGKSLYVSATVILHSGSDMVQAERSGIPIVTSPYQIHFTKTPKYFKPGMPFDLMVFVTNPDGSPAYRVPVAVQGEDTVQSLTQGDGVAKLSINTHPSQKPLSITVRTKKQELSEAEQATRTMQALPYSTVGNSNNYLHLSVLRTELRPGETLNVNFLLRMDRAHEAKIRYYTYLIMNKGRLLKAGRQVREPGQDLVVLPLSITTDFIPSFRLVAYYTLIGASGQREVVADSVWVDVKDSCVGSLVVKSGQSEDRQPVPGQQMTLKIEGDHGARVVLVAVDKGVFVLNKKNKLTQSKIWDVVEKADIGCTPGSGKDYAGVFSDAGLTFTSSSGQQTAQRAELQCPQPAARRRRSVQLTEKRMDKVGKYPKELRKCCEDGMRENPMRFSCQRRTRFISLGEACKKVFLDCCNYITELRRQHARASHLGLARSNLDEDIIAEENIVSRSEFPESWLWNVEDLKEPPKNGISTKLMNIFLKDSITTWEILAVSMSDKKGICVADPFEVTVMQDFFIDLRLPYSVVRNEQVEIRAVLYNYRQNQELKVRVELLHNPAFCSLATTKRRHQQTVTIPPKSSLSVPYVIVPLKTGLQEVEVKAAVYHHFISDGVRKSLKVVPEGIRMNKTVAVRTLDPERLGREGVQKEDIPPADLSDQVPDTESETRILLQGTPVAQMTEDAVDAERLKHLIVTPSGCGEQNMIGMTPTVIAVHYLDETEQWEKFGLEKRQGALELIKKGYTQQLAFRQPSSAFAAFVKRAPSTWLTAYVVKVFSLAVNLIAIDSQVLCGAVKWLILEKQKPDGVFQEDAPVIHQEMIGGLRNNNEKDMALTAFVLISLQEAKDICEEQVNSLPGSITKAGDFLEANYMNLQRSYTVAIAGYALAQMGRLKGPLLNKFLTTAKDKNRWEDPGKQLYNVEATSYALLALLQLKDFDFVPPVVRWLNEQRYYGGGYGSTQATFMVFQALAQYQKDAPDHQELNLDVSLQLPSRSSKITHRIHWESASLLRSEETKENEGFTVTAEGKGQGTLSVVTMYHAKAKDQLTCNKFDLKVTIKPAPETEKRPQDAKNTMILEICTRYRGDQDATMSILDISMMTGFAPDTDDLKQLANGVDRYISKYELDKAFSDRNTLIIYLDKVSHSEDDCLAFKVHQYFNVELIQPGAVKVYAYYNLEESCTRFYHPEKEDGKLNKLCRDELCRCAEENCFIQKSDDKVTLEERLDKACEPGVDYVYKTRLVKVQLSNDFDEYIMAIEQTIKSGSDEVQVGQQRTFISPIKCREALKLEEKKHYLMWGLSSDFWGEKPNLSYIIGKDTWVEHWPEEDECQDEENQKQCQDLGAFTESMVVFGCPN c3-cr2-6 4078305 N/A 4078307 unspecified role unspecified role neutral component neutral component purified purified SCR 1-2 sufficient to bind sufficient binding region sufficient to bind certain certain sequence position certain certain certain sequence position certain false ecobd Escherichia coli (strain B / BL21-DE3) Stoichiometry: 1.0 N/A 4078308 unspecified role unspecified role neutral component neutral component purified purified C3d sufficient to bind sufficient binding region sufficient to bind certain certain sequence position certain certain certain sequence position certain false P01024:p.Cys1010Ala mutation mutation certain certain sequence position certain certain certain sequence position certain false ecobd Escherichia coli (strain B / BL21-DE3) Stoichiometry: 1.0 4078313 4078311 direct interaction direct interaction false false false Fig. 1, Table S1 c3-cr2-7 4078306 N/A 4078307 unspecified role unspecified role prey prey purified purified P20023:p.Arg103Ala mutation decreasing mutation decreasing interaction hotspot hotspot mutation decreasing certain certain sequence position certain certain certain sequence position certain false SCR 1-2 sufficient to bind sufficient binding region sufficient to bind certain certain sequence position certain certain certain sequence position certain false P20023:p.Asp112Ala mutation decreasing mutation decreasing interaction hotspot hotspot mutation decreasing certain certain sequence position certain certain certain sequence position certain false P20023:p.Lys128Ala mutation decreasing mutation decreasing interaction hotspot hotspot mutation decreasing certain certain sequence position certain certain certain sequence position certain false ecobd Escherichia coli (strain B / BL21-DE3) Stoichiometry: 1.0 N/A 4078308 unspecified role unspecified role bait bait purified purified C3d sufficient to bind sufficient binding region sufficient to bind certain certain sequence position certain certain certain sequence position certain false P01024:p.Cys1010Ala mutation mutation certain certain sequence position certain certain certain sequence position certain false ecobd Escherichia coli (strain B / BL21-DE3) Stoichiometry: 1.0 4078322 4078318 direct interaction direct interaction false false false 4078306 Fig. 3