Overview
| Uniprot ID | P08603 |
| Protein Name | Complement factor H |
| Gene Name | CFH |
| Organism | Homo sapiens |
Kla Sites from experimental identification
| Position |
Flanking peptide |
| 1066 |
IVSRQMSKYPSGERV |
| 1222 |
RTTCWDGKLEYPTCA |
| 1230 |
LEYPTCAKR****** |
| 200 |
SDDGFWSKEKPKCVE |
| 236 |
ENERFQYKCNMGYEY |
| 410 |
GRKFVQGKSIDVACH |
| 68 |
NVIMVCRKGEWVALN |
| 754 |
IDKLKKCKSSNLIIL |
| 766 |
IILEEHLKNKKEFDH |
| 769 |
EEHLKNKKEFDHNSN |
| 784 |
IRYRCRGKEGWIHTV |
Function
Glycoprotein that plays an essential role in maintaining a well-balanced immune response by modulating complement activation. Acts as a soluble inhibitor of complement, where its binding to self markers such as glycan structures prevents complement activation and amplification on cell surfaces (PubMed:21285368, PubMed:21317894, PubMed:25402769). Accelerates the decay of the complement alternative pathway (AP) C3 convertase C3bBb, thus preventing local formation of more C3b, the central player of the complement amplification loop (PubMed:19503104, PubMed:21317894, PubMed:26700768). As a cofactor of the serine protease factor I, CFH also regulates proteolytic degradation of already-deposited C3b (PubMed:18252712, PubMed:23332154, PubMed:28671664). In addition, mediates several cellular responses through interaction with specific receptors. For example, interacts with CR3/ITGAM receptor and thereby mediates the adhesion of human neutrophils to different pathogens. In turn, these pathogens are phagocytosed and destroyed (PubMed:20008295, PubMed:9558116)
Protein Sequence
10
MRLLAKIICL
20
MLWAICVAED
30
CNELPPRRNT
40
EILTGSWSDQ
50
TYPEGTQAIY
60
KCRPGYRSLG
70
NVIMVCRKGE
80
WVALNPLRKC
90
QKRPCGHPGD
100
TPFGTFTLTG
110
GNVFEYGVKA
120
VYTCNEGYQL
130
LGEINYRECD
140
TDGWTNDIPI
150
CEVVKCLPVT
160
APENGKIVSS
170
AMEPDREYHF
180
GQAVRFVCNS
190
GYKIEGDEEM
200
HCSDDGFWSK
210
EKPKCVEISC
220
KSPDVINGSP
230
ISQKIIYKEN
240
ERFQYKCNMG
250
YEYSERGDAV
260
CTESGWRPLP
270
SCEEKSCDNP
280
YIPNGDYSPL
290
RIKHRTGDEI
300
TYQCRNGFYP
310
ATRGNTAKCT
320
STGWIPAPRC
330
TLKPCDYPDI
340
KHGGLYHENM
350
RRPYFPVAVG
360
KYYSYYCDEH
370
FETPSGSYWD
380
HIHCTQDGWS
390
PAVPCLRKCY
400
FPYLENGYNQ
410
NYGRKFVQGK
420
SIDVACHPGY
430
ALPKAQTTVT
440
CMENGWSPTP
450
RCIRVKTCSK
460
SSIDIENGFI
470
SESQYTYALK
480
EKAKYQCKLG
490
YVTADGETSG
500
SITCGKDGWS
510
AQPTCIKSCD
520
IPVFMNARTK
530
NDFTWFKLND
540
TLDYECHDGY
550
ESNTGSTTGS
560
IVCGYNGWSD
570
LPICYERECE
580
LPKIDVHLVP
590
DRKKDQYKVG
600
EVLKFSCKPG
610
FTIVGPNSVQ
620
CYHFGLSPDL
630
PICKEQVQSC
640
GPPPELLNGN
650
VKEKTKEEYG
660
HSEVVEYYCN
670
PRFLMKGPNK
680
IQCVDGEWTT
690
LPVCIVEEST
700
CGDIPELEHG
710
WAQLSSPPYY
720
YGDSVEFNCS
730
ESFTMIGHRS
740
ITCIHGVWTQ
750
LPQCVAIDKL
760
KKCKSSNLII
770
LEEHLKNKKE
780
FDHNSNIRYR
790
CRGKEGWIHT
800
VCINGRWDPE
810
VNCSMAQIQL
820
CPPPPQIPNS
830
HNMTTTLNYR
840
DGEKVSVLCQ
850
ENYLIQEGEE
860
ITCKDGRWQS
870
IPLCVEKIPC
880
SQPPQIEHGT
890
INSSRSSQES
900
YAHGTKLSYT
910
CEGGFRISEE
920
NETTCYMGKW
930
SSPPQCEGLP
940
CKSPPEISHG
950
VVAHMSDSYQ
960
YGEEVTYKCF
970
EGFGIDGPAI
980
AKCLGEKWSH
990
PPSCIKTDCL
1000
SLPSFENAIP
1010
MGEKKDVYKA
1020
GEQVTYTCAT
1030
YYKMDGASNV
1040
TCINSRWTGR
1050
PTCRDTSCVN
1060
PPTVQNAYIV
1070
SRQMSKYPSG
1080
ERVRYQCRSP
1090
YEMFGDEEVM
1100
CLNGNWTEPP
1110
QCKDSTGKCG
1120
PPPPIDNGDI
1130
TSFPLSVYAP
1140
ASSVEYQCQN
1150
LYQLEGNKRI
1160
TCRNGQWSEP
1170
PKCLHPCVIS
1180
REIMENYNIA
1190
LRWTAKQKLY
1200
SRTGESVEFV
1210
CKRGYRLSSR
1220
SHTLRTTCWD
1230
GKLEYPTCAK
R
Gene Ontology
| Classification |
GO ID |
Description |
| Cellular Component |
GO:0072562 |
blood microparticle |
| Cellular Component |
GO:0070062 |
extracellular exosome |
| Cellular Component |
GO:0005576 |
extracellular region |
| Cellular Component |
GO:0005615 |
extracellular space |
| Cellular Component |
GO:0106139 |
symbiont cell surface |
| Molecular Function |
GO:0001851 |
complement component C3b binding |
| Molecular Function |
GO:0043395 |
heparan sulfate proteoglycan binding |
| Molecular Function |
GO:0008201 |
heparin binding |
| Molecular Function |
GO:0042802 |
identical protein binding |
| Biological Process |
GO:0022010 |
central nervous system myelination |
| Biological Process |
GO:0006956 |
complement activation |
| Biological Process |
GO:0006957 |
complement activation, alternative pathway |
| Biological Process |
GO:0006954 |
inflammatory response |
| Biological Process |
GO:0006508 |
proteolysis |
| Biological Process |
GO:0030449 |
regulation of complement activation |
| Biological Process |
GO:0030451 |
regulation of complement activation, alternative pathway |
| Biological Process |
GO:1903659 |
regulation of complement-dependent cytotoxicity |
Reference
[1] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.