| Integrin beta-3 (Platelet membrane glycoprotein IIIa) (GPIIIa) (CD antigen CD61) | Itgb3 | O54890 | 1 |
| Integrin beta-like protein 1 | Itgbl1 | Q8VDV0 | 1 |
| Integrin-alpha FG-GAP repeat-containing protein 2 | Itfg2 | Q91WI7 | 1 |
| Intelectin-1a (Galactofuranose-binding lectin) (Intestinal lactoferrin receptor) | Itln1 Intl Itln Itln1a Itlna | O88310 | 1 |
| Intelectin-1b (Intelectin-2) | Itln1b Itln2 Itlnb | Q80ZA0 | 1 |
| Inter-alpha-trypsin inhibitor heavy chain H2 (ITI heavy chain H2) (ITI-HC2) (Inter-alpha-inhibitor heavy chain 2) | Itih2 | Q61703 | 1 |
| Interactor protein for cytohesin exchange factors 1 | Ipcef1 Kiaa0403 | Q5DU31 | 1 |
| Interferon alpha 11 (Interferon alpha-11) | Ifna11 Ifna6 | Q810G4 | 1 |
| Interferon alpha-2 (MCG123693) | Ifna2 mCG_123693 | B1AYH7 | 1 |
| Interferon alpha/beta receptor 1 (IFN-R-1) (IFN-alpha/beta receptor 1) (Type I interferon receptor 1) | Ifnar1 Ifar Ifnar | P33896 | 1 |
| Interferon gamma (IFN-gamma) | Ifng | P01580 | 1 |
| Interferon regulatory factor 2-binding protein 1 (IRF-2-binding protein 1) (IRF-2BP1) (Probable E3 ubiquitin-protein ligase IRF2BP1) (EC 6.3.2.-) | Irf2bp1 | Q8R3Y8 | 1 |
| Interferon regulatory factor 7 (IRF-7) | Irf7 | P70434 | 1 |
| Interferon-induced protein with tetratricopeptide repeats 3 (IFIT-3) (Glucocorticoid-attenuated response gene 49 protein) (GARG-49) (P49) (IRG2) | Ifit3 Garg49 Ifi49 Isg49 | Q64345 | 1 |
| Interferon-induced transmembrane protein 3 (Dispanin subfamily A member 2b) (DSPA2b) (Fragilis protein) (Interferon-inducible protein 15) (Mouse ifitm-like protein 1) (Mil-1) | Ifitm3 | Q9CQW9 | 1 |
| Interferon-inducible double-stranded RNA-dependent protein kinase activator A (PKR-associated protein X) (PKR-associating protein X) (RAX) (Protein activator of the interferon-induced protein kinase) (Protein kinase, interferon-inducible double-stranded RNA-dependent activator) | Prkra Rax | Q9WTX2 | 1 |
| Interferon-related developmental regulator 1 (Nerve growth factor-inducible protein PC4) (TPA-induced sequence 7) (TIS7 protein) | Ifrd1 Tis7 | P19182 | 1 |
| Interferon-related developmental regulator 2 (Protein Ifrd2) | Ifrd2 mCG_18874 | Q9D8U0 | 1 |
| Interferon-stimulated 20 kDa exonuclease-like 2 (EC 3.1.-.-) | Isg20l2 | Q3U1G5 | 1 |
| Interferon-stimulated gene 20 kDa protein (EC 3.1.13.1) (Promyelocytic leukemia nuclear body-associated protein ISG20) (Protein DnaQL) | Isg20 | Q9JL16 | 1 |
| Interleukin 10 receptor 2 (Interleukin 10 receptor, beta) (Interleukin 10 receptor, beta, isoform CRA_a) (Interleukin-10 receptor subunit beta) | Il10rb Il10r2 mCG_11439 | Q8VHM7 | 1 |
| Interleukin enhancer-binding factor 2 (Nuclear factor of activated T-cells 45 kDa) | Ilf2 Nf45 | Q9CXY6 | 1 |
| Interleukin-1 receptor antagonist protein (IL-1RN) (IL-1ra) (IRAP) (IL1 inhibitor) | Il1rn Il-1ra | P25085 | 1 |
| Interleukin-1 receptor-associated kinase 4 (IRAK-4) (EC 2.7.11.1) | Irak4 | Q8R4K2 | 1 |
| Interleukin-1 receptor-associated kinase-like 2 (IRAK-2) (mu-IRAK-2) | Irak2 | Q8CFA1 | 1 |
| Interleukin-1 receptor-like 2 (IL-36 receptor) (Interleukin-1 receptor-related protein 2) (IL-1Rrp2) (IL1R-rp2) | Il1rl2 | Q9ERS7 | 1 |
| Interleukin-17A (IL-17) (IL-17A) (Cytotoxic T-lymphocyte-associated antigen 8) (CTLA-8) | Il17a Ctla8 Il17 | Q62386 | 1 |
| Interleukin-17B (IL-17B) (Cytokine CX1) (Cytokine-like protein ZCYTO7) (Neuronal interleukin-17-related factor) | Il17b Nirf Zcyto7 | Q9QXT6 | 1 |
| Interleukin-20 receptor subunit alpha (IL-20 receptor subunit alpha) (IL-20R-alpha) (IL-20RA) (IL-20R1) | Il20ra | Q6PHB0 | 1 |
| Interleukin-22b (IL-22b) (IL-10-related T-cell-derived-inducible factor beta) (IL-TIF beta) (IL-TIFb) | Il22b Iltifb | Q9JJY8 | 1 |
| Interleukin-23 receptor (IL-23 receptor) (IL-23R) | Il23r | Q8K4B4 | 1 |
| Interleukin-5 receptor subunit alpha (IL-5 receptor subunit alpha) (IL-5R subunit alpha) (IL-5R-alpha) (IL-5RA) (CD antigen CD125) | Il5ra Il5r | P21183 | 1 |
| Intracellular hyaluronan-binding protein 4 (IHABP-4) (IHABP4) | Habp4 | Q9JKS5 | 1 |
| Intraflagellar transport protein 46 homolog | Ift46 | Q9DB07 | 1 |
| Intron-binding protein aquarius | Aqr Kiaa0560 | Q8CFQ3 | 1 |
| Inversin (Inversion of embryo turning protein) (Nephrocystin-2) | Invs Inv Nphp2 | O89019 | 1 |
| Inverted formin-2 | Inf2 | Q0GNC1 | 1 |
| IQ and AAA domain-containing protein 1-like (Protein IQCA1P1) | Iqca1p1 Iqca1l | A6H690 | 1 |
| IQ domain-containing protein D | Iqcd | Q9D3V1 | 1 |
| IQ domain-containing protein E | Iqce | Q6PCQ0 | 1 |
| IQ motif and SEC7 domain-containing protein 2 | Iqsec2 Kiaa0522 | Q5DU25 | 1 |
| Iron-sulfur protein NUBPL (Nucleotide-binding protein-like) | Nubpl | Q9CWD8 | 1 |
| Iroquois-class homeodomain protein IRX-1 (Homeodomain protein IRXA1) (Iroquois homeobox protein 1) | Irx1 Irxa1 | P81068 | 1 |
| Isocitrate dehydrogenase [NAD] subunit gamma 1, mitochondrial (EC 1.1.1.41) (Isocitric dehydrogenase subunit gamma) (NAD(+)-specific ICDH subunit gamma) | Idh3g | P70404 | 1 |
| Isoleucine--tRNA ligase, mitochondrial (EC 6.1.1.5) (Isoleucyl-tRNA synthetase) (IleRS) | Iars2 | Q8BIJ6 | 1 |
| Izumo sperm-egg fusion protein 4 | Izumo4 | D3Z690 | 1 |
| JmjC domain-containing protein 8 (Jumonji domain-containing protein 8) | Jmjd8 | Q3TA59 | 1 |
| Junction-mediating and -regulatory protein | Jmy | Q9QXM1 | 1 |
| Juxtaposed with another zinc finger protein 1 | Jazf1 | Q80ZQ5 | 1 |
| Kallikrein 1-related peptidase b21 (EC 3.4.21.35) (Glandular kallikrein K21) (mGK-21) (Tissue kallikrein 21) | Klk1b21 Klk-21 Klk21 | Q61759 | 1 |
| Kallikrein 1-related peptidase-like b4 (7S nerve growth factor alpha chain) (Alpha-NGF) | Klk1b4 Klk-4 Klk4 Ngfa | P00757 | 1 |
| Kallikrein-7 (EC 3.4.21.117) (Serine protease 6) (Stratum corneum chymotryptic enzyme) (Thymopsin) | Klk7 Prss6 Scce | Q91VE3 | 1 |
| Kappa-type opioid receptor (K-OR-1) (KOR-1) (MSL-1) | Oprk1 | P33534 | 1 |
| KAT8 regulatory NSL complex subunit 1 (NSL complex protein NSL1) (Non-specific lethal 1 homolog) | Kansl1 Kiaa1267 Nsl1 | Q80TG1 | 1 |
| Katanin p60 ATPase-containing subunit A1 | Katna1 | E9PZI6 | 1 |
| KDEL motif-containing protein 1 (Endoplasmic reticulum resident protein 58) (ER protein 58) (ERp58) | Kdelc1 Ep58 | Q9JHP7 | 1 |
| Kelch domain containing 4, isoform CRA_a (Kelch domain-containing protein 4) | Klhdc4 mCG_14165 | G3X961 | 1 |
| Kelch repeat and BTB domain-containing protein 12 (Kelch domain-containing protein 6) | Kbtbd12 Klhdc6 | Q9D618 | 1 |
| Kelch repeat and BTB domain-containing protein 4 (BTB and kelch domain-containing protein 4) | Kbtbd4 Bklhd4 | Q8R179 | 1 |
| Kelch-like 5 (Drosophila), isoform CRA_a (Klhl5 protein) (Protein Klhl5) | Klhl5 mCG_10265 | Q6PFE1 | 1 |
| Kelch-like ECH-associated protein 1 (Cytosolic inhibitor of Nrf2) (INrf2) | Keap1 Inrf2 Kiaa0132 | Q9Z2X8 | 1 |
| Kelch-like protein 42 (Cullin-3-binding protein 9) (Ctb9) (Kelch domain-containing protein 5) | Klhl42 Kiaa1340 Klhdc5 | Q8BFQ9 | 1 |
| Kelch-like protein 7 | Klhl7 | Q8BUL5 | 1 |
| Keratin associated protein 1-5 (Protein Krtap1-5) | Krtap1-5 | A2A590 | 1 |
| Keratin associated protein 4-7 (Protein Krtap4-7) | Krtap4-7 | Q9D732 | 1 |
| Keratin, type I cytoskeletal 24 (Cytokeratin-24) (CK-24) (Keratin-24) (K24) (Type I keratin-24) | Krt24 Ka24 | A1L317 | 1 |
| Keratin, type I cytoskeletal 28 (Cytokeratin-28) (CK-28) (Keratin-25D) (K25D) (Keratin-28) (K28) (Type I inner root sheath-specific keratin-K25irs4) | Krt28 Krt25d | A6BLY7 | 1 |
| Keratin, type II cytoskeletal 4 (Cytokeratin-4) (CK-4) (Cytoskeletal 57 kDa keratin) (Keratin-4) (K4) (Type-II keratin Kb4) | Krt4 Krt2-4 | P07744 | 1 |
| Keratin-associated protein 5-2 | Krtap5-2 | Q9D5Z7 | 1 |
| Keratinocyte-associated transmembrane protein 2 | Kct2 | Q8K201 | 1 |
| Ketosamine-3-kinase (EC 2.7.1.-) (Fructosamine-3-kinase-related protein) | Fn3krp | Q8K274 | 1 |
| Killer cell lectin-like receptor 7 (Lymphocyte antigen 49g) (Ly-49g) (T-cell surface glycoprotein Ly-49G) | Klra7 Ly-49g Ly49-g Ly49g Ly49g4 | Q60654 | 1 |
| Killer cell lectin-like receptor subfamily B member 1A (NKR-P1A) (CD161 antigen-like family member A) (Lymphocyte antigen 55A) (Ly-55A) (NKR-P1.7) (Natural killer cell surface protein P1-2) (NKR-P1 2) (CD antigen CD161a) | Klrb1a Ly55 Ly55a Nkrp1a | P27811 | 1 |
| Killer cell lectin-like receptor subfamily B member 1B allele B (CD161 antigen-like family member B) (Inhibitory receptor NKR-P1B) (Lymphocyte antigen 55d) (Ly-55d) (NKR-P1D) (Natural killer cell surface protein NKR-P1B allele B6) (CD antigen CD161b) | Klrb1b Klrb1d Ly55d Nkrp1b Nkrp1d | Q99JB4 | 1 |
| Killer cell lectin-like receptor subfamily B member 1F (CD161 antigen-like family member F) (Natural killer cell surface protein NKR-P1F) (CD antigen CD161f) | Klrb1f Nkrp1f | Q8VD98 | 1 |
| Killer cell lectin-like receptor, subfamily A, member 15 (Lectin-related NK cell receptor Ly49) (Lectin-related NK cell receptor Ly49O) | Klra15 | Q9JHH8 | 1 |
| Kinesin-like protein KIF11 (Kinesin-related motor protein Eg5) | Kif11 | Q6P9P6 | 1 |
| Kinesin-like protein KIF2A (Kinesin-2) | Kif2a Kif2 Kns2 | P28740 | 1 |
| Kinesin-like protein KIF2C (Mitotic centromere-associated kinesin) (MCAK) | Kif2c | Q922S8 | 1 |
| Kinesin-like protein KIF3C | Kif3c | O35066 | 1 |
| Kinesin-like protein KIFC3 | Kifc3 | O35231 | 1 |
| Kinetochore protein Spc25 | Spc25 Spbc25 | Q3UA16 | 1 |
| Kinetochore-associated protein DSN1 homolog | Dsn1 | Q9CYC5 | 1 |
| KN motif and ankyrin repeat domain-containing protein 2 (Ankyrin repeat domain-containing protein 25) | Kank2 Ankrd25 | Q8BX02 | 1 |
| KRAB-containing zinc-finger protein KRAZ1 (Protein Zfp53) (Zinc finger protein 53) (Zinc finger protein 53, isoform CRA_b) | Zfp53 KRAZ1 Zfp118 mCG_67976 | Q9Z117 | 1 |
| Krueppel-like factor 15 (Cardiovascular Krueppel-like factor) | Klf15 Cklf | Q9EPW2 | 1 |
| Krueppel-like factor 5 (Basic transcription element-binding protein 2) (BTE-binding protein 2) (Intestinal-enriched krueppel-like factor) (Transcription factor BTEB2) | Klf5 Bteb2 Iklf | Q9Z0Z7 | 1 |
| Krueppel-like factor 7 | Klf7 | Q99JB0 | 1 |
| Kv channel-interacting protein 4 (KChIP4) (A-type potassium channel modulatory protein 4) (Calsenilin-like protein) (Potassium channel-interacting protein 4) | Kcnip4 Calp Kchip4 | Q6PHZ8 | 1 |
| L-threonine aldolase (Protein Tha1) | Tha1 Gly1 | Q6XPS7 | 1 |
| L-xylulose reductase (XR) (EC 1.1.1.10) (Dicarbonyl/L-xylulose reductase) | Dcxr | Q91X52 | 1 |
| Lactase-like protein (Klotho/lactase-phlorizin hydrolase-related protein) | Lctl Klph | Q8K1F9 | 1 |
| Lamina-associated polypeptide 2, isoforms alpha/zeta (Thymopoietin isoforms alpha/zeta) (TP alpha/zeta) | Tmpo Lap2 | Q61033 | 1 |
| Laminin subunit alpha-1 (Laminin A chain) (Laminin-1 subunit alpha) (Laminin-3 subunit alpha) (S-laminin subunit alpha) (S-LAM alpha) | Lama1 Lama Lama-1 | P19137 | 1 |
| Laminin subunit beta-1 | Lamb1 | E9QN70 | 1 |
| Laminin subunit gamma-1 | Lamc1 | F8VQJ3 | 1 |
| Large neutral amino acids transporter small subunit 3 (L-type amino acid transporter 3) (Solute carrier family 43 member 1) | Slc43a1 Lat3 | Q8BSM7 | 1 |
| Large subunit GTPase 1 homolog (EC 3.6.1.-) | Lsg1 D16Bwg1547e | Q3UM18 | 1 |
| Late cornified envelope 1B (Protein Lce1b) (Small proline rich-like 5) | Lce1b Sprrl5 mCG_119399 | Q9D149 | 1 |
| Late cornified envelope 1M (Late cornified envelope 5A) (Protein Lce1m) | Lce1m Lce5a mCG_141032 | Q9CR91 | 1 |