22 items (human) - STRING interaction network

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splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.

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query proteins and first shell of interactors

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second shell of interactors

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proteins of unknown 3D structure

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some 3D structure is known or predicted

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Edges represent protein-protein associations

associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding each other.

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gene neighborhood

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Your Input:
	PROC	Vitamin K-dependent protein C; Protein C is a vitamin K-dependent serine protease that regulates blood coagulation by inactivating factors Va and VIIIa in the presence of calcium ions and phospholipids. Exerts a protective effect on the endothelial cell barrier function; Belongs to the peptidase S1 family (461 aa)
	PRTN3	Myeloblastin; Serine protease that degrades elastin, fibronectin, laminin, vitronectin, and collagen types I, III, and IV (in vitro). By cleaving and activating receptor F2RL1/PAR-2, enhances endothelial cell barrier function and thus vascular integrity during neutrophil transendothelial migration. May play a role in neutrophil transendothelial migration, probably when associated with CD177; Belongs to the peptidase S1 family. Elastase subfamily (256 aa)
	GZMM	Granzyme M; Cleaves peptide substrates after methionine, leucine, and norleucine. Physiological substrates include EZR, alpha- tubulins and the apoptosis inhibitor BIRC5/Survivin. Promotes caspase activation and subsequent apoptosis of target cells (257 aa)
	ST14	Suppressor of tumorigenicity 14 protein; Degrades extracellular matrix. Proposed to play a role in breast cancer invasion and metastasis. Exhibits trypsin-like activity as defined by cleavage of synthetic substrates with Arg or Lys as the P1 site. Involved in the terminal differentiation of keratinocytes through prostasin (PRSS8) activation and filaggrin (FLG) processing; Serine proteases (855 aa)
	MASP1	Mannan binding lectin serine peptidase 1 (728 aa)
	C2	Complement C2; Component C2 which is part of the classical pathway of the complement system is cleaved by activated factor C1 into two fragments- C2b and C2a. C2a, a serine protease, then combines with complement factor C4b to generate the C3 or C5 convertase; Belongs to the peptidase S1 family (752 aa)
	F2	Prothrombin; Thrombin, which cleaves bonds after Arg and Lys, converts fibrinogen to fibrin and activates factors V, VII, VIII, XIII, and, in complex with thrombomodulin, protein C. Functions in blood homeostasis, inflammation and wound healing; Belongs to the peptidase S1 family (622 aa)
	TMPRSS11B	Transmembrane protease serine 11B; Serine protease (416 aa)
	CFD	Complement factor D; Factor D cleaves factor B when the latter is complexed with factor C3b, activating the C3bbb complex, which then becomes the C3 convertase of the alternate pathway. Its function is homologous to that of C1s in the classical pathway; Belongs to the peptidase S1 family (253 aa)
	PRSS55	Serine protease 55; Probable serine protease (352 aa)
	RSPO3	R-spondin-3; Activator of the canonical Wnt signaling pathway by acting as a ligand for LGR4-6 receptors, which acts as a key regulator of angiogenesis. Upon binding to LGR4-6 (LGR4, LGR5 or LGR6), LGR4-6 associate with phosphorylated LRP6 and frizzled receptors that are activated by extracellular Wnt receptors, triggering the canonical Wnt signaling pathway to increase expression of target genes. Also regulates the canonical Wnt/beta- catenin-dependent pathway and non-canonical Wnt signaling by acting as an inhibitor of ZNRF3, an important regulator of the Wnt signaling pathway. Acts [...] (272 aa)
	PHACTR3	Phosphatase and actin regulator 3; Protein phosphatase 1 regulatory subunits; Phosphatase and actin regulators (559 aa)
	TTC4	Tetratricopeptide repeat domain containing; Belongs to the TTC4 family (387 aa)
	CTRC	Chymotrypsin-C; Regulates activation and degradation of trypsinogens and procarboxypeptidases by targeting specific cleavage sites within their zymogen precursors. Has chymotrypsin-type protease activity and hypocalcemic activity (268 aa)
	WHSC1	Histone-lysine N-methyltransferase NSD2; Histone methyltransferase with histone H3 ’Lys-27’ (H3K27me) methyltransferase activity. Isoform 2 may act as a transcription regulator that binds DNA and suppresses IL5 transcription through HDAC recruitment (1365 aa)
	KLK7	Kallikrein-7; May catalyze the degradation of intercellular cohesive structures in the cornified layer of the skin in the continuous shedding of cells from the skin surface. Specific for amino acid residues with aromatic side chains in the P1 position. Cleaves insulin A chain at ’14-Tyr-\|-Gln-15’ and insulin B chain at ’6- Leu-\|-Cys-7’, ’16-Tyr-\|-Leu-17’, ’25-Phe-\|-Tyr-26’ and ’26-Tyr-\|- Thr-27’. Could play a role in the activation of precursors to inflammatory cytokines; Kallikreins (253 aa)
	CFI	Complement factor I; Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively; Belongs to the peptidase S1 family (583 aa)
	ENSG00000244255	Complement factor B; Uncharacterized protein; cDNA FLJ55673, highly similar to Complement factor B ; Belongs to the peptidase S1 family (1266 aa)
	AGBL1	Cytosolic carboxypeptidase 4; Metallocarboxypeptidase that mediates deglutamylation of target proteins. Catalyzes the deglutamylation of polyglutamate side chains generated by post-translational polyglutamylation in proteins such as tubulins. Also removes gene-encoded polyglutamates from the carboxy-terminus of target proteins such as MYLK. Acts as a long-chain deglutamylase and specifically shortens long polyglutamate chains, while it is not able to remove the branching point glutamate, a process catalyzed by AGBL5/CCP5; Armadillo-like helical domain containing (1066 aa)
	CFB	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family (764 aa)
	PRSS56	Serine protease 56; Serine protease required during eye development (603 aa)
	PRSS57	Serine protease 57; Serine protease that cleaves preferentially after Arg residues. Can also cleave after citrulline (deimidated arginine) and methylarginine residues; Belongs to the peptidase S1 family (283 aa)

Your Current Organism:

Homo sapiens

NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo sapiens, human, man

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Browse interactions in tabular form:

node1	node2	node1 accession	node2 accession	node1 annotation	node2 annotation	score
C2	CFB	ENSP00000299367	ENSP00000416561	Complement C2; Component C2 which is part of the classical pathway of the complement system is cleaved by activated factor C1 into two fragments- C2b and C2a. C2a, a serine protease, then combines with complement factor C4b to generate the C3 or C5 convertase; Belongs to the peptidase S1 family	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	0.921
C2	CFI	ENSP00000299367	ENSP00000378130	Complement C2; Component C2 which is part of the classical pathway of the complement system is cleaved by activated factor C1 into two fragments- C2b and C2a. C2a, a serine protease, then combines with complement factor C4b to generate the C3 or C5 convertase; Belongs to the peptidase S1 family	Complement factor I; Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively; Belongs to the peptidase S1 family	0.959
C2	MASP1	ENSP00000299367	ENSP00000296280	Complement C2; Component C2 which is part of the classical pathway of the complement system is cleaved by activated factor C1 into two fragments- C2b and C2a. C2a, a serine protease, then combines with complement factor C4b to generate the C3 or C5 convertase; Belongs to the peptidase S1 family	Mannan binding lectin serine peptidase 1	0.941
CFB	C2	ENSP00000416561	ENSP00000299367	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	Complement C2; Component C2 which is part of the classical pathway of the complement system is cleaved by activated factor C1 into two fragments- C2b and C2a. C2a, a serine protease, then combines with complement factor C4b to generate the C3 or C5 convertase; Belongs to the peptidase S1 family	0.921
CFB	CFD	ENSP00000416561	ENSP00000332139	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	Complement factor D; Factor D cleaves factor B when the latter is complexed with factor C3b, activating the C3bbb complex, which then becomes the C3 convertase of the alternate pathway. Its function is homologous to that of C1s in the classical pathway; Belongs to the peptidase S1 family	0.992
CFB	CFI	ENSP00000416561	ENSP00000378130	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	Complement factor I; Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively; Belongs to the peptidase S1 family	0.983
CFB	ENSG00000244255	ENSP00000416561	ENSP00000410815	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	Complement factor B; Uncharacterized protein; cDNA FLJ55673, highly similar to Complement factor B ; Belongs to the peptidase S1 family	0.800
CFB	GZMM	ENSP00000416561	ENSP00000264553	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	Granzyme M; Cleaves peptide substrates after methionine, leucine, and norleucine. Physiological substrates include EZR, alpha- tubulins and the apoptosis inhibitor BIRC5/Survivin. Promotes caspase activation and subsequent apoptosis of target cells	0.901
CFD	CFB	ENSP00000332139	ENSP00000416561	Complement factor D; Factor D cleaves factor B when the latter is complexed with factor C3b, activating the C3bbb complex, which then becomes the C3 convertase of the alternate pathway. Its function is homologous to that of C1s in the classical pathway; Belongs to the peptidase S1 family	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	0.992
CFD	ENSG00000244255	ENSP00000332139	ENSP00000410815	Complement factor D; Factor D cleaves factor B when the latter is complexed with factor C3b, activating the C3bbb complex, which then becomes the C3 convertase of the alternate pathway. Its function is homologous to that of C1s in the classical pathway; Belongs to the peptidase S1 family	Complement factor B; Uncharacterized protein; cDNA FLJ55673, highly similar to Complement factor B ; Belongs to the peptidase S1 family	0.926
CFI	C2	ENSP00000378130	ENSP00000299367	Complement factor I; Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively; Belongs to the peptidase S1 family	Complement C2; Component C2 which is part of the classical pathway of the complement system is cleaved by activated factor C1 into two fragments- C2b and C2a. C2a, a serine protease, then combines with complement factor C4b to generate the C3 or C5 convertase; Belongs to the peptidase S1 family	0.959
CFI	CFB	ENSP00000378130	ENSP00000416561	Complement factor I; Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively; Belongs to the peptidase S1 family	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	0.983
CFI	ENSG00000244255	ENSP00000378130	ENSP00000410815	Complement factor I; Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively; Belongs to the peptidase S1 family	Complement factor B; Uncharacterized protein; cDNA FLJ55673, highly similar to Complement factor B ; Belongs to the peptidase S1 family	0.717
ENSG00000244255	CFB	ENSP00000410815	ENSP00000416561	Complement factor B; Uncharacterized protein; cDNA FLJ55673, highly similar to Complement factor B ; Belongs to the peptidase S1 family	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	0.800
ENSG00000244255	CFD	ENSP00000410815	ENSP00000332139	Complement factor B; Uncharacterized protein; cDNA FLJ55673, highly similar to Complement factor B ; Belongs to the peptidase S1 family	Complement factor D; Factor D cleaves factor B when the latter is complexed with factor C3b, activating the C3bbb complex, which then becomes the C3 convertase of the alternate pathway. Its function is homologous to that of C1s in the classical pathway; Belongs to the peptidase S1 family	0.926
ENSG00000244255	CFI	ENSP00000410815	ENSP00000378130	Complement factor B; Uncharacterized protein; cDNA FLJ55673, highly similar to Complement factor B ; Belongs to the peptidase S1 family	Complement factor I; Responsible for cleaving the alpha-chains of C4b and C3b in the presence of the cofactors C4-binding protein and factor H respectively; Belongs to the peptidase S1 family	0.717
F2	PROC	ENSP00000308541	ENSP00000234071	Prothrombin; Thrombin, which cleaves bonds after Arg and Lys, converts fibrinogen to fibrin and activates factors V, VII, VIII, XIII, and, in complex with thrombomodulin, protein C. Functions in blood homeostasis, inflammation and wound healing; Belongs to the peptidase S1 family	Vitamin K-dependent protein C; Protein C is a vitamin K-dependent serine protease that regulates blood coagulation by inactivating factors Va and VIIIa in the presence of calcium ions and phospholipids. Exerts a protective effect on the endothelial cell barrier function; Belongs to the peptidase S1 family	0.996
GZMM	CFB	ENSP00000264553	ENSP00000416561	Granzyme M; Cleaves peptide substrates after methionine, leucine, and norleucine. Physiological substrates include EZR, alpha- tubulins and the apoptosis inhibitor BIRC5/Survivin. Promotes caspase activation and subsequent apoptosis of target cells	Complement factor B; Factor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments- Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B- lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes; Belongs to the peptidase S1 family	0.901
MASP1	C2	ENSP00000296280	ENSP00000299367	Mannan binding lectin serine peptidase 1	Complement C2; Component C2 which is part of the classical pathway of the complement system is cleaved by activated factor C1 into two fragments- C2b and C2a. C2a, a serine protease, then combines with complement factor C4b to generate the C3 or C5 convertase; Belongs to the peptidase S1 family	0.941
PHACTR3	TMPRSS11B	ENSP00000360054	ENSP00000330475	Phosphatase and actin regulator 3; Protein phosphatase 1 regulatory subunits; Phosphatase and actin regulators	Transmembrane protease serine 11B; Serine protease	0.430

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