Initial triggering of complement

Proteins (8)

Protein	Synonyms	Taxonomy
Complement C2	EC 3.4.21.43; C3/C5 convertase	Homo sapiens (human)
Complement factor B	EC 3.4.21.47; C3/C5 convertase; Glycine-rich beta glycoprotein; GBG; PBF2; Properdin factor B	Homo sapiens (human)
Complement C3	C3 and PZP-like alpha-2-macroglobulin domain-containing protein 1	Homo sapiens (human)
Mannan-binding lectin serine protease 1	EC 3.4.21.-; Complement factor MASP-3; Complement-activating component of Ra-reactive factor; Mannose-binding lectin-associated serine protease 1; MASP-1; Mannose-binding protein-associated serine protease; Ra-reactive factor serine protease p100; RaRF; S	Homo sapiens (human)
Complement C4-B	Basic complement C4; C3 and PZP-like alpha-2-macroglobulin domain-containing protein 3	Homo sapiens (human)
Complement C4-A	Acidic complement C4; C3 and PZP-like alpha-2-macroglobulin domain-containing protein 2	Homo sapiens (human)
Collectin-11	Collectin kidney protein 1; CL-K1	Homo sapiens (human)
Collectin-10	Collectin liver protein 1; CL-L1; Collectin-34; CL-34	Homo sapiens (human)

Compounds (2)

Compound	Description
Calcium	A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.
Water	A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

Compound

Description

Calcium

A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.

Water

A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)