| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P31722 | Complement C1q subcomponent subunit C; | C1qc; C1qg; | NP_001008524.1; | 245 | rat |
| Q9ET61 | Complement component C1q receptor; C1q/MBL/SPA receptor; C1qR(p); C1qRp; Cell surface antigen AA4; Complement component 1 q subcomponent receptor 1; CD antigen CD93; | Cd93; C1qr1 C1qrp; | NP_445835.1; | 643 | rat |
| Q5XIG2 | Complement C1q tumor necrosis factor-related protein 1; | C1qtnf1; | NP_001007676.1;XP_006247863.1;XP_006247864.1; | 281 | rat |
| Q5FVH0 | Complement C1q tumor necrosis factor-related protein 5; | C1qtnf5; Ctrp5; | NP_001012123.1; | 243 | rat |
| Q3T1I2 | Complement C1q tumor necrosis factor-related protein 6; | C1qtnf6; | NP_001030104.1; | 263 | rat |
| Q6IE64 | Complement C1r subcomponent-like protein; C1r-LP; C1r-like protein; EC 3.4.21.-; | C1rl; | NP_001002804.1; | 461 | rat |
| Q6P6T1 | Complement C1s subcomponent; EC 3.4.21.42; C1 esterase; Complement component 1 subcomponent s; [Cleaved into: Complement C1s subcomponent heavy chain; Complement C1s subcomponent light chain]; | C1s; r-gsp; | NP_620255.1; | 688 | rat |
| P27653 | C-1-tetrahydrofolate synthase, cytoplasmic; C1-THF synthase; [Cleaved into: C-1-tetrahydrofolate synthase, cytoplasmic, N-terminally processed] [Includes: Methylenetetrahydrofolate dehydrogenase (EC 1.5.1.5); Methenyltetrahydrofolate cyclohydrolase (EC 3.癷?癸 | Mthfd1; Mthfd; | NP_071953.1; | 935 | rat |
| Q5RK03 | CDKN2AIP N-terminal-like protein; CDKN2A-interacting protein N-terminal-like protein; | Cdkn2aipnl; | NP_001008279.1; | 116 | rat |
| Q66HA5 | Coiled-coil and C2 domain-containing protein 1A; Five prime repressor element under dual repression-binding protein 1; FRE under dual repression-binding protein 1; Freud-1; | Cc2d1a; | NP_001013891.1;XP_006255296.1; | 941 | rat |
| Q5FVK6 | Coiled-coil and C2 domain-containing protein 1B; Five prime repressor element under dual repression-binding protein 2; FRE under dual repression-binding protein 2; Freud-2; | Cc2d1b; | NP_001257913.1; | 850 | rat |
| O55197 | C3a anaphylatoxin chemotactic receptor; C3AR; C3a-R; | C3ar1; | NP_114449.1; | 473 | rat |
| Q5BJM7 | CDC42 small effector protein 1; | Cdc42se1; | NP_001034133.1; | 79 | rat |
| A1L1K4 | CDC42 small effector protein 2; | Cdc42se2; | NULL | 83 | rat |
| Q63514 | C4b-binding protein alpha chain; C4bp; | C4bpa; | NULL | 558 | rat |
| Q63515 | C4b-binding protein beta chain; | C4bpb; | NULL | 258 | rat |
| Q641Y1 | Cytochrome b561 domain-containing protein 2; | Cyb561d2; | NP_001007754.1;XP_006243866.1; | 222 | rat |
| P97520 | C5a anaphylatoxin chemotactic receptor 1; C5a anaphylatoxin chemotactic receptor; C5a-R; C5aR; CD antigen CD88; | C5ar1; C5r1; | NP_446071.1; | 352 | rat |
| Q695P6 | C5a anaphylatoxin chemotactic receptor 2; Complement component 5a receptor 2; G-protein coupled receptor 77; | C5ar2; C5l2 Gpr77; | XP_006228415.1; | 343 | rat |
| Q8R1R5 | CD99 antigen-like protein 2; MIC2-like protein 1; Rhombencephalic expression protein 40 kDa; Protein rhombex-40; CD antigen CD99; | Cd99l2; Mic2l1 Rhombex40; | NP_604454.1;XP_006251738.1;XP_008768818.1; | 246 | rat |
