| Kinetochore protein Spc25 (Fragment) | Spc25 | A2AUT1 | 1 |
| Kinetochore protein Spc25 (Fragment) | Spc25 | A2AUT3 | 1 |
| Kinetochore protein Spc25 (Fragment) | Spc25 | A2AUT4 | 1 |
| Kinetochore-associated protein DSN1 homolog | Dsn1 | Q9CYC5 | 1 |
| KN motif and ankyrin repeat domains 1 (Fragment) | Kank1 | E9Q944 | 1 |
| KRR1 small subunit processome component homolog | Krr1 | G3UZA0 | 1 |
| Krt6b protein | Krt6b | Q0VDR7 | 1 |
| Krueppel-like factor 13 (Basic transcription element-binding protein 3) (BTE-binding protein 3) (Erythroid transcription factor FKLF-2) (RANTES factor of late activated T-lymphocytes 1) (RFLAT-1) (Transcription factor BTEB3) | Klf13 Bteb3 Fklf2 | Q9JJZ6 | 1 |
| Kunitz-type protease inhibitor 1 (Hepatocyte growth factor activator inhibitor type 1) (HAI-1) | Spint1 Hai1 | Q9R097 | 1 |
| L-2-hydroxyglutarate dehydrogenase, mitochondrial (EC 1.1.99.2) (Duranin) | L2hgdh | Q91YP0 | 1 |
| L-aminoadipate-semialdehyde dehydrogenase-phosphopantetheinyl transferase (EC 2.7.8.-) (4'-phosphopantetheinyl transferase) (Alpha-aminoadipic semialdehyde dehydrogenase-phosphopantetheinyl transferase) (AASD-PPT) | Aasdhppt | Q9CQF6 | 1 |
| L-lactate dehydrogenase (EC 1.1.1.27) | Ldha Ldh1 mCG_19938 | G5E8N5 | 1 |
| L-lactate dehydrogenase (EC 1.1.1.27) | Ldha mCG_19938 | A0A1B0GSX0 | 1 |
| L-threonine aldolase (Threonine aldolase 1) | Tha1 Gly1 | Q6XPS7 | 1 |
| L-xylulose reductase (XR) (EC 1.1.1.10) (Dicarbonyl/L-xylulose reductase) | Dcxr | Q91X52 | 1 |
| La-related protein 4 (MCG123519) | Larp4 mCG_123519 | G3X9Q6 | 1 |
| Lactosylceramide alpha-2,3-sialyltransferase (EC 2.4.99.9) (CMP-NeuAc:lactosylceramide alpha-2,3-sialyltransferase) (Ganglioside GM3 synthase) (ST3Gal V) (ST3GalV) (Sialyltransferase 9) | St3gal5 GM3S Siat9 | O88829 | 1 |
| Lamin-B2 | Lmnb2 | P21619 | 1 |
| Large proline-rich protein BAG6 | Bag6 | G3UYQ2 | 1 |
| Large proline-rich protein BAG6 | Bag6 | G3UZT6 | 1 |
| Large proline-rich protein BAG6 (Fragment) | Bag6 | G3UXT8 | 1 |
| Large subunit GTPase 1 homolog (Fragment) | Lsg1 | F7AMG0 | 1 |
| Lariat debranching enzyme (EC 3.1.-.-) | Dbr1 | Q923B1 | 1 |
| Latent-transforming growth factor beta-binding protein 1 (Fragment) | Ltbp1 | B1B1E2 | 1 |
| Latent-transforming growth factor beta-binding protein 2 (LTBP-2) | Ltbp2 | O08999 | 1 |
| LDLR chaperone MESD (Fragment) | Mesdc2 | D3YVR4 | 1 |
| Lectin, mannose-binding 2-like, isoform CRA_b (VIP36-like protein) | Lman2l mCG_17749 | D3Z4P2 | 1 |
| Left-right determination factor 1 (Protein lefty-1) (Lefty protein) (Stimulated by retinoic acid gene 3 protein) (Transforming growth factor beta-4) (TGF-beta-4) | Lefty1 Ebaf Lefty Stra3 Tgfb4 | Q64280 | 1 |
| LEM domain-containing protein 2 (Nuclear envelope transmembrane protein 25) (NET25) | Lemd2 Lem2 | Q6DVA0 | 1 |
| Leptin receptor gene-related protein (Endospanin-1) (OB-R gene-related protein) (OB-RGRP) | Leprot Lepr Obr | O89013 | 1 |
| Lethal(2) giant larvae protein homolog 1 | Llgl1 | A0A0R4J0S4 | 1 |
| Lethal(2) giant larvae protein homolog 2 | Llgl2 | J3QJU5 | 1 |
| Leucine rich repeat containing 1, isoform CRA_b (Leucine-rich repeat-containing protein 1) | Lrrc1 mCG_14390 | G3X9W3 | 1 |
| Leucine zipper protein 4 | Luzp4 | B1AV09 | 1 |
| Leucine zipper protein 4 | Luzp4 | L7N278 | 1 |
| Leucine-rich repeat and calponin homology domain-containing protein 3 | Lrch3 | E9QAU9 | 1 |
| Leucine-rich repeat and WD repeat-containing protein 1 (ORC-associated protein) (ORCA) (Origin recognition complex-associated protein) | LRWD1 Orca | Q8BUI3 | 1 |
| Leucine-rich repeat flightless-interacting protein 2 | Lrrfip2 | E9QN52 | 1 |
| Leucine-rich repeat flightless-interacting protein 2 | Lrrfip2 | A0A0R4J169 | 1 |
| Leucine-rich repeat flightless-interacting protein 2 (LRR FLII-interacting protein 2) | Lrrfip2 | Q91WK0 | 1 |
| Leucine-rich repeat neuronal protein 1 (Neuronal leucine-rich repeat protein 1) (NLRR-1) | Lrrn1 Kiaa1497 | Q61809 | 1 |
| Leucine-rich repeat serine/threonine-protein kinase 1 (EC 2.7.11.1) | Lrrk1 Kiaa1790 | Q3UHC2 | 1 |
| Leucine-rich repeat transmembrane protein FLRT2 (Fibronectin leucine rich transmembrane protein 2) | Flrt2 Kiaa0405 | Q8BLU0 | 1 |
| Leucine-rich repeat-containing protein 14 | Lrrc14 Kiaa0014 | Q8VC16 | 1 |
| Leucine-rich repeat-containing protein 15 | Lrrc15 | Q80X72 | 1 |
| Leucine-rich repeat-containing protein 2 | Lrrc2 | A0A0R4J0F2 | 1 |
| Leucine-rich repeat-containing protein 25 (Monocyte and plasmacytoid-activated protein) | Lrrc25 Mapa | Q8K1T1 | 1 |
| Leucine-rich repeat-containing protein 45 | Lrrc45 | Q8CIM1 | 1 |
| Leucine-rich repeat-containing protein 57 | Lrrc57 | Q9D1G5 | 1 |
| Leucine-rich repeat-containing protein 7 | Lrrc7 | E9Q6L9 | 1 |
| Leucine-rich repeats and immunoglobulin-like domains protein 2 (LIG-2) | Lrig2 Kiaa0806 | Q52KR2 | 1 |
| Leucine-zipper-like transcriptional regulator 1 (Fragment) | Lztr1 | F6VJI5 | 1 |
| Leukemia inhibitory factor (LIF) (Differentiation-stimulating factor) (D factor) | Lif | P09056 | 1 |
| Leukocyte immunoglobulin-like receptor subfamily B member 3 (LIR-3) (Leukocyte immunoglobulin-like receptor 3) (Cell-surface glycoprotein p91) (Paired immunoglobulin-like receptor B) (PIR-B) | Lilrb3 Pirb | P97484 | 1 |
| Leukocyte receptor cluster member 1 homolog | Leng1 | Q9DB98 | 1 |
| Leukocyte surface antigen CD47 | Cd47 | D3Z187 | 1 |
| Ligand of Numb protein X 2 (Numb-binding protein 2) | Lnx2 | Q91XL2 | 1 |
| LIM and calponin homology domains-containing protein 1 | Limch1 Kiaa1102 | Q3UH68 | 1 |
| LIM and senescent cell antigen-like-containing domain protein 2 (Particularly interesting new Cys-His protein 2) (PINCH-2) | Lims2 Pinch2 | Q91XD2 | 1 |
| LIM and SH3 domain protein 1 (Fragment) | Lasp1 | A2A6G9 | 1 |
| LIM and SH3 domain protein 1 (Fragment) | Lasp1 | A2A6H0 | 1 |
| LIM and SH3 domain protein 1 (Fragment) | Lasp1 | A2A6G6 | 1 |
| LIM and SH3 domain protein 1 (Fragment) | Lasp1 | A2A6G7 | 1 |
| LIM and SH3 domain protein 1 (Fragment) | Lasp1 | A2A6G8 | 1 |
| LIM domain kinase 1 | Limk1 | E9PVB6 | 1 |
| LIM domain kinase 1 (LIMK-1) (EC 2.7.11.1) (KIZ-1) | Limk1 Limk | P53668 | 1 |
| LIM domain-containing protein ajuba | Ajuba Jub | Q91XC0 | 1 |
| LIM/homeobox protein Lhx2 (Homeobox protein LH-2) (LIM homeobox protein 2) | Lhx2 | Q9Z0S2 | 1 |
| LINE-1 type transposase domain-containing protein 1 (ES cell-associated protein 11) | L1td1 Ecat11 | Q587J6 | 1 |
| Lipase maturation factor | Lmf1 | Z4YJR1 | 1 |
| Lipase member K (EC 3.1.1.-) (Lipase-like abhydrolase domain-containing protein 2) | Lipk Lipl2 | Q8BM14 | 1 |
| Lipid droplet-associated hydrolase (EC 3.1.1.-) (Lipid droplet-associated serine hydrolase) (mLDAH) | Ldah | Q8BVA5 | 1 |
| Lipoma HMGIC fusion partner-like 2 protein (Fragment) | Lhfpl2 | D3Z698 | 1 |
| Lipopolysaccharide-responsive and beige-like anchor protein | Lrba | E9Q3Y4 | 1 |
| Lipopolysaccharide-responsive and beige-like anchor protein (Beige-like protein) | Lrba Bgl Lba | Q9ESE1 | 1 |
| Lipoprotein lipase (LPL) (EC 3.1.1.34) | Lpl | Q3U5U0 | 1 |
| Liprin-alpha-2 (Protein tyrosine phosphatase receptor type f polypeptide-interacting protein alpha-2) (PTPRF-interacting protein alpha-2) | Ppfia2 | Q8BSS9 | 1 |
| Liprin-beta-1 (Fragment) | Ppfibp1 | F6YZ95 | 1 |
| LOC435565 protein | Iigp1b LOC435565 | Q8K2V4 | 1 |
| LOC72520 protein (Fragment) | LOC72520 | Q811J2 | 1 |
| Lon protease homolog 2, peroxisomal (Putative uncharacterized protein) | Lonp2 | Q8BK80 | 1 |
| Lon protease homolog, mitochondrial (EC 3.4.21.-) (Lon protease-like protein) (LONP) (Mitochondrial ATP-dependent protease Lon) (Serine protease 15) | Lonp1 LONP1 Prss15 | Q3V2D0 | 1 |
| Long-chain fatty acid transport protein 1 (FATP-1) (Fatty acid transport protein 1) (EC 6.2.1.-) (Solute carrier family 27 member 1) | Slc27a1 Fatp Fatp1 | Q60714 | 1 |
| Long-chain fatty acid transport protein 4 (FATP-4) (Fatty acid transport protein 4) (EC 6.2.1.-) (Solute carrier family 27 member 4) | Slc27a4 Acsvl4 Fatp4 | Q91VE0 | 1 |
| Low density lipoprotein receptor adapter protein 1 (Autosomal recessive hypercholesterolemia protein homolog) | Ldlrap1 Arh | Q8C142 | 1 |
| Low-density lipoprotein receptor-related protein 12 (LRP-12) | Lrp12 | Q8BUJ9 | 1 |
| Low-density lipoprotein receptor-related protein 1B (LRP-1B) (Low-density lipoprotein receptor-related protein-deleted in tumor) (LRP-DIT) | Lrp1b Lrpdit | Q9JI18 | 1 |
| Low-density lipoprotein receptor-related protein 4 (LRP-4) (LDLR dan) | Lrp4 Kiaa0816 | Q8VI56 | 1 |
| Low-density lipoprotein receptor-related protein 5 | Lrp5 | H3BL52 | 1 |
| Low-density lipoprotein receptor-related protein 8 | Lrp8 | B1AXJ3 | 1 |
| Low-density lipoprotein receptor-related protein 8 | Lrp8 | B1AXJ4 | 1 |
| Low-density lipoprotein receptor-related protein 8 | Lrp8 | B1AXJ5 | 1 |
| Low-density lipoprotein receptor-related protein 8 | Lrp8 | B1AXJ6 | 1 |
| Low-density lipoprotein receptor-related protein 8 (Fragment) | Lrp8 | F6YZZ8 | 1 |
| Low-density lipoprotein receptor-related protein 8 (LRP-8) (Apolipoprotein E receptor 2) | Lrp8 Apoer2 | Q924X6 | 1 |
| LRP2-binding protein | Lrp2bp | Q9D4C6 | 1 |
| Luc7l2 protein (Putative RNA-binding protein Luc7-like 2) | Luc7l2 | Q05CX5 | 1 |
| Lunapark, ER junction formation factor (Fragment) | Lnpk Lnp Lnpk1 | A2ASM0 | 1 |
| Lung adenoma susceptibility protein 2 | Las2 | Q8CB14 | 1 |
| Lymphocyte antigen 6D (Ly-6D) (Thymocyte B-cell antigen) (ThB) | Ly6d Ly61 Thb | P35459 | 1 |