The KᵢDB allows you to filter and search for various scientific entities, including receptors, sources, species, hot ligands, test ligands, and citations.

You can customize your search by selecting multiple items or using specific Kᵢ values for more targeted results.

Selecting a hot ligand or test ligand from the table will redirect you to the specifications of the chosen entity.

Selecting a citation from the table will open its respective PubMed link.

Showing 1-94 of 94 items.

Kᵢ Database

Kᵢ IDReceptorsSourcesSpeciesHot LigandsTest LigandsKᵢ ValueCitationsSubmitted AtUpdated At 
5535-HT1ACORTEXRAT3H-8-OH-DPATSUMATRIPTAN100McCARTHY & PEROUTKA, 1989Jan 15, 2025Jan 15, 2025
5545-HT1ACORTEXPIG3H-8-OH-DPATSUMATRIPTAN741SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
5555-HT1ACORTEXRAT3H-8-OH-DPATSUMATRIPTAN741SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
11335-HT2CCORTEXPIG3H-MESULERGINESUMATRIPTAN>10000McCARTHY & PEROUTKA, 1989Jan 15, 2025Jan 15, 2025
11345-HT2CChoroid PlexusRAT3H-MESULERGINESUMATRIPTAN>10000SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
11355-HT2CChoroid PlexusPIG3H-MESULERGINESUMATRIPTAN>10000SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
20965-HT1DCAUDATECOW3H-5HTSUMATRIPTAN17McCARTHY & PEROUTKA, 1989Jan 15, 2025Jan 15, 2025
20975-HT1DCAUDATECALF3H-5HTSUMATRIPTAN29SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
20985-HT1DCAUDATECOW3H-5HTSUMATRIPTAN126SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
21935-HT1BCORTEXRAT3H-5HTSUMATRIPTAN437SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
21945-HT1BCORTEXRAT125I-CYPSUMATRIPTAN447SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
25425-HT3CORTEXRAT3H-QUIPAZINESUMATRIPTAN>10000McCARTHY & PEROUTKA, 1989Jan 15, 2025Jan 15, 2025
25495-HT2ACORTEXRAT3H-KETANSERINSUMATRIPTAN>10000SCHOEFFTER & HOYER, 1989Jan 15, 2025Jan 15, 2025
26875-HT2ACORTEXRAT3H-KETANSERINSUMATRIPTAN>10000McCARTHY & PEROUTKA, 1989Jan 15, 2025Jan 15, 2025
26885-HT2ACORTEXPIG3H-KETANSERINSUMATRIPTAN>10000HOYER ET AL., 1987Jan 15, 2025Jan 15, 2025
41695-HT1DCLONEDHUMAN3H-5HTSUMATRIPTAN3.7HAMBLIN AND METCALF, 1991Jan 15, 2025Jan 15, 2025
41805-HT1BCLONEDHUMAN3H-5HTSUMATRIPTAN2HAMBLIN MW, ET AL., 1992Jan 15, 2025Jan 15, 2025
43155-HT7CLONEDRAT125I-LSDSUMATRIPTAN570SHEN Y, ET AL., 1993Jan 15, 2025Jan 15, 2025
43405-HT7CLONEDRAT3H-5HTSUMATRIPTAN251SHEN Y, ET AL., 1993Jan 15, 2025Jan 15, 2025
43565-HT6CLONEDHUMAN3H-LSDSUMATRIPTAN2600KOHEN R, ET AL., 1996Jan 15, 2025Jan 15, 2025
43945-HT1BCLONEDRAT3H-5HTSUMATRIPTAN45HAMBLIN MW, ET AL., 5/1992Jan 15, 2025Jan 15, 2025
44145-HT1DCLONEDRAT3H-5HTSUMATRIPTAN9.5HAMBLIN MW, ET AL., 5/1992Jan 15, 2025Jan 15, 2025
46765-HT1BCLONEDHUMAN3H-5HTSUMATRIPTAN3.4WEINSHANK RL, ET AL., 1992Jan 15, 2025Jan 15, 2025
47015-HT1DCLONEDHUMAN3H-5HTSUMATRIPTAN7.7WEINSHANK RL, ET AL., 1992Jan 15, 2025Jan 15, 2025
47225-HT1DCLONEDBOVINE3H-5HTSUMATRIPTAN29WEINSHANK RL, ET AL., 1992Jan 15, 2025Jan 15, 2025
49815-HT2ACLONEDRAT3H-KETANSERINSUMATRIPTAN>10000BONHAUS DW, ET AL., 1997Jan 15, 2025Jan 15, 2025
50095-HT2CCLONEDRAT3H-MESULERGINESUMATRIPTAN>10000BONHAUS DW, ET AL., 1997Jan 15, 2025Jan 15, 2025
50405-HT2ACLONEDHUMAN3H-KETANSERINSUMATRIPTAN>10000BONHAUS DW, ET AL., 1997Jan 15, 2025Jan 15, 2025
50715-HT2BCLONEDHUMAN3H-5HTSUMATRIPTAN>10000BONHAUS DW, ET AL., 1997Jan 15, 2025Jan 15, 2025
51025-HT2CCLONEDHUMAN3H-MESULERGINESUMATRIPTAN>10000BONHAUS DW, ET AL., 1997Jan 15, 2025Jan 15, 2025
51975-HT5BCLONEDRAT3H-5CTSUMATRIPTAN807WISDEN W, ET AL., 1993Jan 15, 2025Jan 15, 2025
52475-HT7CLONEDRAT3H-5HTSUMATRIPTAN506RUAT M, ET AL., 1993Jan 15, 2025Jan 15, 2025
54805-HT2BCLONEDHUMAN3H-5HTSUMATRIPTAN>10000WAINSCOTT DB, ET AL., 1996Jan 15, 2025Jan 15, 2025
55175-HT2BCLONEDRAT3H-5HTSUMATRIPTAN>10000WAINSCOTT DB, ET AL., 1996Jan 15, 2025Jan 15, 2025
56065-HT4CLONEDRAT3H-GR-113808SUMATRIPTAN1000GERALD C, ET AL., 1995Jan 15, 2025Jan 27, 2025
64265-HT5ACLONEDMOUSE125I-LSDSUMATRIPTAN>10000Matthes H, et.al., 1993Jan 15, 2025Jan 15, 2025
64405-HT5BCLONEDMOUSE125I-LSDSUMATRIPTAN7943.28Matthes H, et.al., 1993Jan 15, 2025Jan 15, 2025
65015-HT7CLONEDHUMAN3H-5HTSUMATRIPTAN951BARD JA, ET AL., 1993Jan 15, 2025Jan 15, 2025
65775-HT7CLONEDGUINEA PIG3H-5HTSUMATRIPTAN251.18TSOU AP, ET AL., 1994Jan 15, 2025Jan 15, 2025
65985-HT7CLONEDMammalian3H-5HTSUMATRIPTAN506SEBBEN M, ET AL., 1994Jan 15, 2025Jan 15, 2025
66115-HT6CLONEDMOUSE3H-5HTSUMATRIPTAN1995.26PLASSAT JL, ET AL., 1993Jan 15, 2025Jan 15, 2025
66505-HT1ECLONEDHUMAN3H-5HTSUMATRIPTAN2520ZGOMBICK JM, ET AL., 1992Jan 15, 2025Jan 15, 2025
67505-HT1FCLONEDHUMAN3H-5HTSUMATRIPTAN23Adham N, et al., 1992Jan 15, 2025Jan 15, 2025
68745-HT1ECLONEDRAT125I-LSDSUMATRIPTAN2300LOVENBERG TW, ET AL., 1993Jan 15, 2025Jan 15, 2025
114925-HT1BCLONEDHUMAN3H-AlniditanSUMATRIPTAN1.2Schotte A, et al., 1996Jan 15, 2025Jan 15, 2025
114935-HT1DCLONEDHUMAN3H-AlniditanSUMATRIPTAN1.7Schotte A, et al., 1996Jan 15, 2025Jan 15, 2025
118675-HT1BCLONEDHUMAN3H-GR-125743SUMATRIPTAN25.11Millan MJ, et al., 2000Jan 15, 2025Jan 15, 2025
118705-HT1DCLONEDHUMAN3H-GR-125743SUMATRIPTAN1.99Millan MJ, et al., 2000Jan 15, 2025Jan 15, 2025
120715-HT1DCLONEDHUMAN3H-GR-125743SUMATRIPTAN8.4Domenech T, et al., 1997Jan 15, 2025Jan 15, 2025
120835-HT1BCLONEDHUMAN3H-GR-125743SUMATRIPTAN60Domenech T, et al., 1997Jan 15, 2025Jan 15, 2025
120955-HT1BS. NigraHUMAN3H-GR-125743SUMATRIPTAN28Domenech T, et al., 1997Jan 15, 2025Jan 15, 2025
152565-HT1ACLONEDHUMAN3H-8-OH-DPATSUMATRIPTAN1023.29BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
152845-HT1ACLONEDHUMAN3H-cAMPSUMATRIPTAN257.03BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153125-HT1DCLONEDHUMAN3H-5HTSUMATRIPTAN3.71BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153205-HT1DCLONEDHUMAN3H-5HTSUMATRIPTAN3.38BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153325-HT1DCLONEDDog3H-LSDSUMATRIPTAN7.94BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153395-HT1DCLONEDDog3H-5HTSUMATRIPTAN1.62BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153565-HT1DCLONEDRAT3H-5HTSUMATRIPTAN9.54BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153695-HT1BCLONEDHUMAN3H-5HTSUMATRIPTAN7.76BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153855-HT1BCLONEDHUMAN3H-5HTSUMATRIPTAN9.33BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
153935-HT1BCLONEDHUMAN3H-5HTSUMATRIPTAN10.96BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154085-HT1BCLONEDHUMAN3H-5HTSUMATRIPTAN1.99BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154225-HT1BCLONEDHUMAN3H-5HTSUMATRIPTAN61.65BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154455-HT1BCLONEDRAT125I-ICYPSUMATRIPTAN467.73BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154585-HT1BCLONEDRAT3H-5HTSUMATRIPTAN467.73BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154715-HT1BCLONEDRAT3H-5HTSUMATRIPTAN44.66BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154815-HT1ECLONEDHUMAN3H-5HTSUMATRIPTAN2511.88BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154985-HT1ECLONEDHUMAN3H-5HTSUMATRIPTAN2344.22BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
154995-HT1ECLONEDHUMAN3H-5HTSUMATRIPTAN2089.29BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
155115-HT1FCLONEDHUMAN3H-5HTSUMATRIPTAN22.9BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
155265-HT1FCLONEDMOUSE125I-LSDSUMATRIPTAN79.43BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
155405-HT1FCLONEDRAT125I-LSDSUMATRIPTAN64.56BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
157165-HT5ACLONEDMOUSE125I-LSDSUMATRIPTAN>10000BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
157265-HT5ACLONEDMOUSEUNDEFINEDSUMATRIPTAN>10000BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
157445-HT5BCLONEDMOUSE125I-LSDSUMATRIPTAN7943.28BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
157605-HT5BCLONEDRAT3H-5CTSUMATRIPTAN812.83BOESS FG, ET AL., 1994Jan 15, 2025Jan 15, 2025
159575-HT7CLONEDRAT125I-LSDSUMATRIPTAN545Lovenberg TW, et al., 1993aJan 15, 2025Jan 15, 2025
16008CB1CLONEDMOUSE125I-LSDSUMATRIPTAN>10000Plassat JL, et al., 1992Jan 15, 2025Jan 27, 2025
163525-HT1ACLONEDHUMAN3H-8-OH-DPATSUMATRIPTAN255Pauwels PJ, Van Gompel P, and Leysen JE, 1993Jan 15, 2025Jan 15, 2025
269485-HT6CLONEDHUMAN3H-LSDSUMATRIPTAN>10000Hirst WD, et.al.,2003Jan 15, 2025Jan 15, 2025
269495-HT6CLONEDRAT3H-LSDSUMATRIPTAN>10000Hirst WD, et.al.,2003Jan 15, 2025Jan 15, 2025
269505-HT6CLONEDMOUSE3H-LSDSUMATRIPTAN5623.41Hirst WD, et.al.,2003Jan 15, 2025Jan 15, 2025
275195-HT1BSTRIATUMGUINEA PIG3H-GR-125743SUMATRIPTAN173.78Millan MJ, et al., 2002aJan 15, 2025Jan 15, 2025
275205-HT1BFR. CORTEXRAT3H-GR-125743SUMATRIPTAN39.8107Millan MJ, et al., 2002aJan 15, 2025Jan 15, 2025
313585-HT7BRAINRAT3H-MESULERGINESUMATRIPTAN25.1189Hemedah M, et al., 1999Jan 15, 2025Jan 15, 2025
313685-HT7ILEUMGUINEA PIG3H-MESULERGINESUMATRIPTAN100Hemedah M, et al., 1999Jan 15, 2025Jan 15, 2025
314005-HT7CLONEDHUMAN3H-5HTSUMATRIPTAN1000Eglen RM et al., 1997Jan 15, 2025Jan 27, 2025
314245-HT7CLONEDRAT125I-LSDSUMATRIPTAN630.957Eglen RM et al., 1997Jan 15, 2025Jan 27, 2025
314395-HT7CLONEDRAT3H-5HTSUMATRIPTAN501.187Eglen RM et al., 1997Jan 15, 2025Jan 27, 2025
556885-HT1BUNDEFINEDHUMANUNDEFINEDSUMATRIPTAN9.1Choi SK et al., 2008Jan 15, 2025Jan 15, 2025
557245-HT1DUNDEFINEDHUMANUNDEFINEDSUMATRIPTAN1.2Choi SK et al., 2008Jan 15, 2025Jan 15, 2025
686835-HT5ACLONEDHUMAN3H-5CTSUMATRIPTAN5000Glennon RA, 2003Jan 15, 2025Jan 15, 2025
686975-HT6CLONEDHUMAN3H-LSDSUMATRIPTAN2600Glennon RA, 2003Jan 15, 2025Jan 15, 2025
687125-HT7CLONEDHUMAN3H-5HTSUMATRIPTAN950Glennon RA, 2003Jan 15, 2025Jan 15, 2025