| Leukocyte antigen-C alpha chain (Fragment) | HLA-Cw*15P | Q9Y4H9 | 1 |
| Leukocyte cell-derived chemotaxin 1 (Chondromodulin) [Cleaved into: Chondrosurfactant protein (CH-SP); Chondromodulin-1 (Chondromodulin-I) (ChM-I)] | CNMD CHMI LECT1 | O75829 | 1 |
| Leukocyte immunoglobulin-like receptor subfamily B member 1 | LILRB1 | A0A087WSV6 | 1 |
| Leukocyte immunoglobulin-like receptor subfamily B member 1 | LILRB1 | A0A0B4J1W1 | 1 |
| Leukocyte immunoglobulin-like receptor subfamily B member 4 | LILRB4 | A0A0A0MSZ8 | 1 |
| Leukocyte immunoglobulin-like receptor subfamily B member 5 (CD85 antigen-like family member C) (Leukocyte immunoglobulin-like receptor 8) (LIR-8) (CD antigen CD85c) | LILRB5 LIR8 | O75023 | 1 |
| Leukocyte receptor cluster member 1 | LENG1 | Q96BZ8 | 1 |
| Leukocyte receptor cluster member 8 (Fragment) | LENG8 | B0VJY8 | 1 |
| Leukocyte receptor cluster member 9 | LENG9 | Q96B70 | 1 |
| Leukotriene A-4 hydrolase (LTA-4 hydrolase) (EC 3.3.2.6) (Leukotriene A(4) hydrolase) | LTA4H LTA4 | F8VV40 | 1 |
| Leukotriene A4 hydrolase variant (Fragment) | 0 | Q59ES1 | 1 |
| Leukotriene B4 receptor 1 (LTB4-R 1) (LTB4-R1) (Chemoattractant receptor-like 1) (G-protein coupled receptor 16) (P2Y purinoceptor 7) (P2Y7) | LTB4R BLT BLT1 BLTR CMKRL1 GPR16 P2RY7 | Q15722 | 1 |
| Leupaxin | LPXN | E9PNX9 | 1 |
| LFA-3 (Fragment) | 0 | Q14748 | 1 |
| LIM and cysteine-rich domains protein 1 (cDNA FLJ52480, highly similar to LIM and cysteine-rich domains protein 1) | LMCD1 | B4DEY6 | 1 |
| LIM and SH3 domain protein 1 (LASP-1) (Metastatic lymph node gene 50 protein) (MLN 50) | LASP1 MLN50 | Q96ED2 | 1 |
| LIM domain and actin-binding protein 1 | LIMA1 | F8VRN8 | 1 |
| LIM domain only protein 7 | LMO7 | A0A0A0MTE2 | 1 |
| LIM domain only protein 7 | LMO7 | E9PMT2 | 1 |
| LIM domain only protein 7 (LMO-7) (F-box only protein 20) (LOMP) | LMO7 FBX20 FBXO20 KIAA0858 | E9PLH4 | 1 |
| LIM domain-binding protein 2 (LDB-2) (Carboxyl-terminal LIM domain-binding protein 1) (CLIM-1) (LIM domain-binding factor CLIM1) | LDB2 CLIM1 | O43679 | 1 |
| LIM/homeobox protein Lhx2 (Homeobox protein LH-2) (LIM homeobox protein 2) | LHX2 LH2 | P50458 | 1 |
| LIM/homeobox protein Lhx3 | LHX3 | F1T0D5 | 1 |
| LIM/homeobox protein Lhx6 (Fragment) | LHX6 | H0YMH3 | 1 |
| LIM/homeobox protein Lhx6 (LIM homeobox protein 6) (LIM/homeobox protein Lhx6.1) | LHX6 LHX6.1 | Q9UPM6 | 1 |
| Limbic system-associated membrane protein | LSAMP | F5H5G1 | 1 |
| Lipase member K (EC 3.1.1.-) (Lipase-like abhydrolase domain-containing protein 2) | LIPK LIPL2 | Q5VXJ0 | 1 |
| Lipase member N (EC 3.1.1.-) (Lipase-like abhydrolase domain-containing protein 4) | LIPN LIPL4 | Q5VXI9 | 1 |
| Lipocalin-15 | LCN15 UNQ2541/PRO6093 | Q6UWW0 | 1 |
| Lipocalin-like 1 protein | LCNL1 | Q6ZST4 | 1 |
| Lipolysis-stimulated lipoprotein receptor | LSR LISCH | B4DKL4 | 1 |
| Lipolysis-stimulated lipoprotein receptor | LSR LISCH | Q9BT33 | 1 |
| Lipolysis-stimulated lipoprotein receptor | LSR | S4R3V8 | 1 |
| Lipolysis-stimulated lipoprotein receptor (Fragment) | LSR | M0QZL9 | 1 |
| Lipoma HMGIC fusion partner-like 3 protein | LHFPL3 LHFPL4 | Q86UP9 | 1 |
| Lipoma-preferred partner (Fragment) | LPP | C9JXK9 | 1 |
| Lipoma-preferred partner (Fragment) | LPP | C9JIY7 | 1 |
| Lipopolysaccharide-induced tumor necrosis factor-alpha factor | LITAF | I3L1H3 | 1 |
| Lipopolysaccharide-responsive and beige-like anchor protein | LRBA | E9PEM5 | 1 |
| Lipoxygenase homology domain-containing protein 1 | LOXHD1 | Q8IVV2 | 1 |
| Lipoxygenase homology domain-containing protein 1 (Lipoxygenase homology domains 1, isoform CRA_b) | LOXHD1 hCG_2036838 | J3QKX9 | 1 |
| Liprin-alpha-1 | PPFIA1 | E9PJZ7 | 1 |
| Liprin-alpha-1 (Fragment) | PPFIA1 | E9PID5 | 1 |
| Liprin-alpha-1 (Fragment) | PPFIA1 | H0YDZ8 | 1 |
| Liprin-alpha-4 (Protein tyrosine phosphatase receptor type f polypeptide-interacting protein alpha-4) (PTPRF-interacting protein alpha-4) | PPFIA4 KIAA0897 | O75335 | 1 |
| Liprin-alpha-4 (Protein tyrosine phosphatase receptor type f polypeptide-interacting protein alpha-4) (PTPRF-interacting protein alpha-4) | PPFIA4 KIAA0897 | B1N949 | 1 |
| Liprin-beta-1 | PPFIBP1 | A0A0A0MTP2 | 1 |
| Liprin-beta-2 (Fragment) | PPFIBP2 | H0YDJ2 | 1 |
| Liprin-beta-2 (Fragment) | PPFIBP2 | H0YET1 | 1 |
| LisH domain and HEAT repeat-containing protein KIAA1468 | KIAA1468 | A0A075B785 | 1 |
| Little elongation complex subunit 2 (Interactor of little elongator complex ELL subunit 2) (NMDA receptor-regulated protein 2) | ICE2 BRCC1 NARG2 UNQ3101/PRO10100 | Q659A1 | 1 |
| LOC389833 protein (Fragment) | LOC389833 | Q3SWV3 | 1 |
| LOC644656 protein (Fragment) | LOC644656 | Q9BT31 | 1 |
| LON peptidase N-terminal domain and RING finger protein 2 (Neuroblastoma apoptosis-related protease) (RING finger protein 192) | LONRF2 RNF192 | Q1L5Z9 | 1 |
| LON peptidase N-terminal domain and RING finger protein 3 (RING finger protein 127) | LONRF3 RNF127 | Q496Y0 | 1 |
| Long-chain fatty acid transport protein 6 (FATP-6) (Fatty acid transport protein 6) (Fatty-acid-coenzyme A ligase, very long-chain 2) (Solute carrier family 27 member 6) (Very long-chain acyl-CoA synthetase homolog 1) (VLCSH1) (hVLCS-H1) | SLC27A6 ACSVL2 FACVL2 FATP1 | Q9Y2P4 | 1 |
| Long-chain-fatty-acid--CoA ligase 3 (Fragment) | ACSL3 | H7BYZ7 | 1 |
| Long-chain-fatty-acid--CoA ligase 6 | ACSL6 | E7ERD7 | 1 |
| Long-chain-fatty-acid--CoA ligase 6 (EC 6.2.1.3) (Long-chain acyl-CoA synthetase 6) (LACS 6) | ACSL6 ACS2 FACL6 KIAA0837 LACS5 | Q4G191 | 1 |
| Long-chain-fatty-acid--CoA ligase 6 (Fragment) | ACSL6 | C9J8C7 | 1 |
| Long-chain-fatty-acid--CoA ligase 6 (Fragment) | ACSL6 | C9JPA5 | 1 |
| Long-chain-fatty-acid--CoA ligase ACSBG1 | ACSBG1 | F5H4U6 | 1 |
| Long-chain-fatty-acid--CoA ligase ACSBG1 (EC 6.2.1.3) (Acyl-CoA synthetase bubblegum family member 1) (hBG1) (hsBG) (hsBGM) (Lipidosin) | ACSBG1 BGM KIAA0631 LPD | Q96GR2 | 1 |
| Long-chain-fatty-acid--CoA ligase ACSBG2 (Fragment) | ACSBG2 | K7ERT0 | 1 |
| Low affinity immunoglobulin gamma Fc region receptor III-A (Fragment) | FCGR3A | H0Y755 | 1 |
| Low affinity immunoglobulin gamma Fc region receptor III-B | FCGR3B | A0A087WZR4 | 1 |
| Low density lipoprotein-related protein 1 variant (Fragment) | 0 | Q59FG2 | 1 |
| Low-density lipoprotein receptor class A domain-containing protein 1 | LDLRAD1 | Q5T700 | 1 |
| Low-density lipoprotein receptor class A domain-containing protein 3 | LDLRAD3 | Q86YD5 | 1 |
| Low-density lipoprotein receptor-related protein 12 (Fragment) | LRP12 | E5RIW8 | 1 |
| Low-density lipoprotein receptor-related protein 3 (LRP-3) (105 kDa low-density lipoprotein receptor-related protein) (hLRp105) | LRP3 | O75074 | 1 |
| Low-density lipoprotein receptor-related protein 6 | LRP6 | F5H7J9 | 1 |
| LPAR1 protein (Lysophosphatidic acid receptor 1) (cDNA FLJ51746, highly similar to Lysophosphatidic acid receptor Edg-2) | LPAR1 | Q6GPG7 | 1 |
| LRP10 protein (Fragment) | LRP10 | Q66K21 | 1 |
| LRRFIP1 protein (Fragment) | LRRFIP1 | Q05D04 | 1 |
| LRRTM4 protein (Leucine-rich repeat transmembrane neuronal protein 4) | LRRTM4 | Q4KMX1 | 1 |
| LSM1-like protein U6 small nuclear RNA associated isoform 3 (U6 snRNA-associated Sm-like protein LSm1) | LSM1 | E5RH18 | 1 |
| Lung adenoma susceptibility protein 2 | LAS2 C18orf54 | Q8IYD9 | 1 |
| Lupus La protein | SSB | E9PFL9 | 1 |
| Ly-6/neurotoxin-like protein 1 (Secreted Ly-6/uPAR domain-containing protein 2) (Secreted Ly-6/uPAR-related protein 2) (SLURP-2) | LYNX1 SLURP2 | Q86SR0 | 1 |
| Ly6/PLAUR domain-containing protein 5 | LYPD5 UNQ1908/PRO4356 | Q6UWN5 | 1 |
| Lymphocyte antigen 6 complex locus protein G6c (Lymphocyte antigen 6 complex, locus G6C, isoform CRA_a) | LY6G6C hCG_43718 | G3V1A8 | 1 |
| Lymphocyte antigen 6E | LY6E | E7EWF8 | 1 |
| Lymphocyte antigen 75 variant (Fragment) | 0 | Q59H44 | 1 |
| Lymphocyte function-associated antigen 3 (Fragment) | CD58 | H0YDI1 | 1 |
| Lymphocyte transmembrane adapter 1 (Linker for activation of X cells) (Membrane-associated adapter protein LAX) | LAX1 LAX | Q8IWV1 | 1 |
| Lymphocyte-specific protein 1 (47 kDa actin-binding protein) (52 kDa phosphoprotein) (pp52) (Lymphocyte-specific antigen WP34) | LSP1 WP34 | B3KPP1 | 1 |
| Lymphoid enhancer-binding factor 1 (LEF-1) (T cell-specific transcription factor 1-alpha) (TCF1-alpha) | LEF1 | Q9UJU2 | 1 |
| Lymphoid-restricted membrane protein (Fragment) | LRMP | H0YJC6 | 1 |
| LYPLA1 protein (Lysophospholipase I, isoform CRA_a) (cDNA FLJ78542, highly similar to Homo sapiens lysophospholipase I (LYPLA1), mRNA) (cDNA, FLJ94339, Homo sapiens lysophospholipase I (LYPLA1), mRNA) | LYPLA1 hCG_1983522 | Q6IAQ1 | 1 |
| Lys-63-specific deubiquitinase BRCC36 (Fragment) | BRCC3 | X6RJS7 | 1 |
| Lysine--tRNA ligase (Fragment) | KARS | H3BPV7 | 1 |
| Lysine-rich coiled-coil protein 1 (Cryptogenic hepatitis-binding protein 2) | KRCC1 CHBP2 BM-003 BM-044 | Q9NPI7 | 1 |
| Lysine-specific demethylase 2A (N-terminus deleted lysine-specific demethylase 2A) | KDM2A | I3VM54 | 1 |
| Lysine-specific demethylase 3A | KDM3A | F5H070 | 1 |
| Lysine-specific demethylase 4A (EC 1.14.11.-) (JmjC domain-containing histone demethylation protein 3A) (Jumonji domain-containing protein 2A) | KDM4A JHDM3A JMJD2 JMJD2A KIAA0677 | O75164 | 1 |
| Lysine-specific demethylase 4C (EC 1.14.11.-) (Gene amplified in squamous cell carcinoma 1 protein) (GASC-1 protein) (JmjC domain-containing histone demethylation protein 3C) (Jumonji domain-containing protein 2C) | KDM4C GASC1 JHDM3C JMJD2C KIAA0780 | Q9H3R0 | 1 |
| Lysine-specific demethylase 4D (EC 1.14.11.-) (JmjC domain-containing histone demethylation protein 3D) (Jumonji domain-containing protein 2D) | KDM4D JHDM3D JMJD2D | Q6B0I6 | 1 |
| Lysine-specific demethylase 5A (EC 1.14.11.-) (Histone demethylase JARID1A) (Jumonji/ARID domain-containing protein 1A) (Retinoblastoma-binding protein 2) (RBBP-2) | KDM5A JARID1A RBBP2 RBP2 | P29375 | 1 |
| Lysine-specific demethylase 5D (EC 1.14.11.-) (Histocompatibility Y antigen) (H-Y) (Histone demethylase JARID1D) (Jumonji/ARID domain-containing protein 1D) (Protein SmcY) | KDM5D HY HYA JARID1D KIAA0234 SMCY | Q9BY66 | 1 |