| Janus (JAK) kinases | Humans | Not Available | 10 | Details |
| Junction plakoglobin | Humans | Common junctional plaque protein. The membrane-associated plaques are architectural elements in an important strategi... more | 2 | Details |
| Kainate receptors | Humans | This group is comprised of the kainate glutamate receptor subtypes. | 3 | Details |
| Kallikrein-1 | Humans | Glandular kallikreins cleave Met-Lys and Arg-Ser bonds in kininogen to release Lys-bradykinin | 8 | Details |
| Kallikrein-14 | Humans | Serine-type endopeptidase with a dual trypsin-like and chymotrypsin-like substrate specificity. May activate/inactiva... more | 1 | Details |
| Kallikrein-2 | Humans | Glandular kallikreins cleave Met-Lys and Arg-Ser bonds in kininogen to release Lys-bradykinin | 2 | Details |
| Kallikrein-5 | Humans | May be involved in desquamation | 1 | Details |
| Kallikrein-6 | Humans | Serine protease which exhibits a preference for Arg over Lys in the substrate P1 position and for Ser or Pro in the P... more | 1 | Details |
| Kallikrein-7 | Humans | May catalyze the degradation of intercellular cohesive structures in the cornified layer of the skin in the continuou... more | 2 | Details |
| Kallistatin | Humans | Inhibits human amidolytic and kininogenase activities of tissue kallikrein. Inhibition is achieved by formation of an... more | 3 | Details |
| Kappa-casein | Humans | Kappa-casein stabilizes micelle formation, preventing casein precipitation in milk | 1 | Details |
| Kappa-type opioid receptor | Humans | G protein-coupled opioid receptor that functions as a receptor for endogenous alpha-neoendorphins and dynorphins, but... more | 84 | Details |
| KAT8 regulatory NSL complex subunit 3 | Humans | Non-catalytic component of the NSL histone acetyltransferase complex, a multiprotein complex that mediates histone H4... more | 1 | Details |
| Kelch protein 13 | Plasmodium falciparum | Not Available | 1 | Details |
| Kelch-like ECH-associated protein 1 | Humans | Substrate-specific adapter of a BCR (BTB-CUL3-RBX1) E3 ubiquitin ligase complex that regulates the response to oxidat... more | 11 | Details |
| Kell blood group glycoprotein | Humans | Zinc endopeptidase with endothelin-3-converting enzyme activity. Cleaves EDN1, EDN2 and EDN3, with a marked preferenc... more | 1 | Details |
| Keratin, type I cytoskeletal 10 | Humans | Structural component of intermediate filaments in suprabasal keratinocytes of stratified epithelia. Forms heteropolym... more | 3 | Details |
| Keratin, type I cytoskeletal 12 | Humans | Structural component of intermediate filaments in the corneal epithelium. Forms heteropolymers with the type II kerat... more | 2 | Details |
| Keratin, type I cytoskeletal 14 | Humans | Structural component of intermediate filaments in basal keratinocytes of stratified epithelia. Forms heteropolymers w... more | 2 | Details |
| Keratin, type I cytoskeletal 16 | Humans | Structural component of intermediate filaments in epithelial keratinocytes. Forms heteropolymers with type II keratin... more | 2 | Details |
| Keratin, type I cytoskeletal 9 | Humans | Structural component of intermediate filaments in suprabasal keratinocytes of palmoplantar epidermis. Forms heteropol... more | 5 | Details |
| Keratin, type II cytoskeletal 1 | Humans | Structural component of intermediate filaments in suprabasal keratinocytes of stratified epithelia. Forms heteropolym... more | 3 | Details |
| Keratin, type II cytoskeletal 2 epidermal | Humans | Structural component of intermediate filaments in suprabasal keratinocytes of stratified epidermis. Forms heteropolym... more | 4 | Details |
| Keratin, type II cytoskeletal 5 | Humans | Structural component of intermediate filaments in basal keratinocytes of stratified epithelia. Forms heteropolymers w... more | 2 | Details |
| Keratin, type II cytoskeletal 6A | Humans | Structural component of intermediate filaments in epithelial keratinocytes. Forms heteropolymers with the type I kera... more | 3 | Details |