Crystal Structure of Human Complement C3b in complex with DAF (CCP2-4)

Regulators of Complement Activity Mediate Inhibitory Mechanisms Through a Common C3B-Binding Mode.

C3 AND PZP-LIKE ALPHA-2-MACROGLOBULIN DOMAIN-CONTAINING PRO

SPMYSIITPNILRLESEETMVLEAHDAQGDVPVTVTVHDFPGKKLVLSSEKTVLTPATNHMGNVTFTIPANREFKSEKGR
NKFVTVQATFGTQVVEKVVLVSLQSGYLFIQTDKTIYTPGSTVLYRIFTVNHKLLPVGRTVMVNIENPEGIPVKQDSLSS
QNQLGVLPLSWDIPELVNMGQWKIRAYYENSPQQVFSTEFEVKEYVLPSFEVIVEPTEKFYYIYNEKGLEVTITARFLYG
KKVEGTAFVIFGIQDGEQRISLPESLKRIPIEDGSGEVVLSRKVLLDGVQNPRAEDLVGKSLYVSATVILHSGSDMVQAE
RSGIPIVTSPYQIHFTKTPKYFKPGMPFDLMVFVTNPDGSPAYRVPVAVQGEDTVQSLTQGDGVAKLSINTHPSQKPLSI
TVRTKKQELSEAEQATRTMQALPYSTVGNSNNYLHLSVLRTELRPGETLNVNFLLRMDRAHEAKIRYYTYLIMNKGRLLK
AGRQVREPGQDLVVLPLSITTDFIPSFRLVAYYTLIGASGQREVVADSVWVDVKDSCVGSLVVKSGQSEDRQPVPGQQMT
LKIEGDHGARVVLVAVDKGVFVLNKKNKLTQSKIWDVVEKADIGCTPGSGKDYAGVFSDAGLTFTSSSGQQTAQRAELQC
PQPAA

SNLDEDIIAEENIVSRSEFPESWLWNVEDLKEPPKNGISTKLMNIFLKDSITTWEILAVSMSDKKGICVADPFEVTVMQD
FFIDLRLPYSVVRNEQVEIRAVLYNYRQNQELKVRVELLHNPAFCSLATTKRRHQQTVTIPPKSSLSVPYVIVPLKTGLQ
EVEVKAAVYHHFISDGVRKSLKVVPEGIRMNKTVAVRTLDPERLGREGVQKEDIPPADLSDQVPDTESETRILLQGTPVA
QMTEDAVDAERLKHLIVTPSGCGEENMIGMTPTVIAVHYLDETEQWEKFGLEKRQGALELIKKGYTQQLAFRQPSSAFAA
FVKRAPSTWLTAYVVKVFSLAVNLIAIDSQVLCGAVKWLILEKQKPDGVFQEDAPVIHQEMIGGLRNNNEKDMALTAFVL
ISLQEAKDICEEQVNSLPGSITKAGDFLEANYMNLQRSYTVAIAGYALAQMGRLKGPLLNKFLTTAKDKNRWEDPGKQLY
NVEATSYALLALLQLKDFDFVPPVVRWLNEQRYYGGGYGSTQATFMVFQALAQYQKDAPDHQELNLDVSLQLPSRSSKIT
HRIHWESASLLRSEETKENEGFTVTAEGKGQGTLSVVTMYHAKAKDQLTCNKFDLKVTIKPAPETEKRPQDAKNTMILEI
CTRYRGDQDATMSILDISMMTGFAPDTDDLKQLANGVDRYISKYELDKAFSDRNTLIIYLDKVSHSEDDCLAFKVHQYFN
VELIQPGAVKVYAYYNLEESCTRFYHPEKEDGKLNKLCRDELCRCAEENCFIQKSDDKVTLEERLDKACEPGVDYVYKTR
LVKVQLSNDFDEYIMAIEQTIKSGSDEVQVGQQRTFISPIKCREALKLEEKKHYLMWGLSSDFWGEKPNLSYIIGKDTWV
EHWPEEDECQDEENQKQCQDLGAFTESMVVFGCPN

GSSCEVPTRLNSASLKQPYITQNYFPVGTVVEYECRPGYRREPSLSPKLTCLQNLKWSTAVEFCKKKSCPNPGEIRNGQI
DVPGGILFGATISFSCNTGYKLFGSTSSFCLISGSSVQWSDPLPECREIYCPAPPQIDNGIIQGERDHYGYRQSVTYACN
KGFTMIGEHSIYCTVNNDEGEWSGPPPECRGAAA

60MM MGCL2 30MM BIS-TRIS PH 5.5 6.5% PEG 3350 3% MESO-ERHYTROL

CRYSTAL STRUCTURE OF HUMAN COMPLEMENT C3B AT 2.8 ANGSTROM RESOLUTION

CRYSTAL STRUCTURE OF HUMAN COMPLEMENT C3B IN COMPLEX WITH MCP (CCP1-4)

CRYSTAL STRUCTURE OF HUMAN COMPLEMENT C3B IN COMPLEX WITH CR1 (CCP15-17)

CRYSTAL STRUCTURE OF HUMAN COMPLEMENT C3B IN COMPLEX WITH SMALLPOX INHIBITOR OF COMPLEMENT (SPICE)

RESIDUES GS AT N-TERMINUS AND AAA AT C-TERMINUS ARE ADDED
BY CLONING.
RESIDUE 1013 HAS BEEN CONVERTED FROM GLN TO GLU IN
CONVERSION OF C3 PROTEIN TO C3B

CHAIN 'B' AND (RESID 1361 THROUGH 1663 )
CHAIN 'D' AND (RESID 1153 THROUGH 1349 )
CHAIN 'D' AND (RESID 1350 THROUGH 1663 )
LIPID BINDING, COMPLEMENT SYSTEM, IMMUNE SYSTEM, PLASMA PROTEIN, REGULATORS OF COMPLEMENT ACTIVITY, DECAY-ACCELERATING ACTIVITY