eF-site ID 3g6j-B
PDB Code 3g6j
Chain B

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Title C3b in complex with a C3b specific Fab
Classification IMMUNE SYSTEM
Compound Complement C3 beta chain
Source ORGANISM_COMMON: human; ORGANISM_SCIENTIFIC: Homo sapiens;
Sequence B:  DEDIIAEENIVSRSEFPESWLWNVEDLKEPPKNGISTKLM
NIFLKDSITTWEILAVSMSDKKGICVADPFEVTVMQDFFI
DLRLPYSVVRNEQVEIRAVLYNYRQNQELKVRVELLHNPA
FCSLATTKRRHQQTVTIPPKSSLSVPYVIVPLKTGLQEVE
VKAAVYHHFISDGVRKSLKVVPEGIRMNKTVAVRTLDPER
LGREGVQKEDIPPADLSDQVPDTESETRILLQGTPVAQMT
EDAVDAERLKHLIVTPSGCGEQNMIGMTPTVIAVHYLDET
EQWEKFGLEKRQGALELIKKGYTQQLAFRQPSSAFAAFVK
RAPSTWLTAYVVKVFSLAVNLIAIDSQVLCGAVKWLILEK
QKPDGVFQEDAPVIHQEMIGGLRNNNEKDMALTAFVLISL
QEAKDICEEQVNSLPGSITKAGDFLEANYMNLQRSYTVAI
AGYALAQMGRLKGPLLNKFLTTAKDKNRWEDPGKQLYNVE
ATSYALLALLQLKDFDFVPPVVRWLNEQRYYGGGYGSTQA
TFMVFQALAQYQKDAPDHQELNLDVSLQLPSRSSKITHRI
HWESASLLRSEETKENEGFTVTAEGKGQGTLSVVTMYHAK
AKDQLTCNKFDLKVTIKPAPETKNTMILEICTRYRGDQDA
TMSILDISMMTGFAPDTDDLKQLANGVDRYISKYELDKAF
SDRNTLIIYLDKVSHSEDDCLAFKVHQYFNVELIQPGAVK
VYAYYNLEESCTRFYHPEKEDGKLNKLCRDELCRCAEENC
FIQKDKVTLEERLDKACEPGVDYVYKTRLVKVQLSNDFDE
YIMAIEQTIKSGSDEVQVGQQRTFISPIKCREALKLEEKK
HYLMWGLSSDFWGEKPNLSYIIGKDTWVEHWPEEDECQDE
ENQKQCQDLGAFTESMVVFGCPN
Description


Functional site

1) chain B
residue 1595
type CARBOHYD
sequence N
description N-linked (GlcNAc...) asparagine => ECO:0000269|PubMed:16335952
source Swiss-Prot : SWS_FT_FI6

2) chain B
residue 988
type CROSSLNK
sequence C
description Isoglutamyl cysteine thioester (Cys-Gln)
source Swiss-Prot : SWS_FT_FI7

3) chain B
residue 991
type CROSSLNK
sequence Q
description Isoglutamyl cysteine thioester (Cys-Gln)
source Swiss-Prot : SWS_FT_FI7

4) chain B
residue 932
type SITE
sequence R
description Cleavage; by factor I => ECO:0000255
source Swiss-Prot : SWS_FT_FI1

5) chain B
residue 1281
type SITE
sequence R
description Cleavage; by factor I
source Swiss-Prot : SWS_FT_FI2

6) chain B
residue 1298
type SITE
sequence R
description Cleavage; by factor I
source Swiss-Prot : SWS_FT_FI2

7) chain B
residue 1641
type SITE
sequence N
description Coordinates Mg2+ for interaction with Complement factor B Bb fragment => ECO:0000269|PubMed:28264884, ECO:0000269|PubMed:31507604
source Swiss-Prot : SWS_FT_FI3

8) chain B
residue 946
type MOD_RES
sequence S
description Phosphoserine; by FAM20C => ECO:0000269|PubMed:26091039
source Swiss-Prot : SWS_FT_FI4

9) chain B
residue 1299
type MOD_RES
sequence S
description Phosphoserine; by FAM20C => ECO:0000269|PubMed:26091039
source Swiss-Prot : SWS_FT_FI4

10) chain B
residue 1551
type MOD_RES
sequence S
description Phosphoserine; by FAM20C => ECO:0000269|PubMed:26091039
source Swiss-Prot : SWS_FT_FI4

11) chain B
residue 917
type CARBOHYD
sequence N
description N-linked (GlcNAc...) asparagine => ECO:0000269|PubMed:14760718, ECO:0000269|PubMed:16335952, ECO:0000269|PubMed:17051150
source Swiss-Prot : SWS_FT_FI5

12) chain B
residue 985-993
type prosite
sequence PSGCGEQNM
description ALPHA_2_MACROGLOBULIN Alpha-2-macroglobulin family thiolester region signature. PsGCGEQnM
source prosite : PS00477


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