Table 1.

Location of deleted residues and effect on trimerization.

Deleted aa (Δ)	Position in 3D	Trimer formation
WT gC1qR	NA	Yes
Δ74–95	αA coiled-coil, N-terminus	No
Δ144–148	Loop β3–β4	Yes
Δ144–162	Loop β3–β4	Yes
Δ154–162	Loop β3–β4	Yes
Δ174–180	Loop β4–β5*	Yes
Δ190–202	Loop β5–β6	Yes
Δ190–192	Loop β5–β6	Yes
Δ196–202	Loop β5–β6	Yes
Δ204–218	β6 + loop β6–β7	No
Δ212–223	Loop β6–β7*	No
W233G	αB, coiled-coil	Yes

*M-face residues.