| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| O08984 | Lamin-B receptor; Integral nuclear envelope inner membrane protein; NBP60; | Lbr; | NP_604448.1; | 620 | rat |
| Q1XID0 | Transcription factor LBX1; Ladybird homeobox protein homolog 1; | Lbx1; Lbx1h; | NP_001040573.1; | 285 | rat |
| Q5U2Y9 | Lebercilin; Leber congenital amaurosis 5 protein homolog; | Lca5; | NP_001013976.1;XP_008764471.1;XP_008764472.1;XP_008764473.1;XP_008764474.1;XP_008764475.1;XP_008764477.1;XP_008764478.1;XP_008764479.1;XP_008764480.1; | 727 | rat |
| P97629 | Leucyl-cystinyl aminopeptidase; Cystinyl aminopeptidase; EC 3.4.11.3; GP160; Insulin-regulated membrane aminopeptidase; Insulin-responsive aminopeptidase; IRAP; Oxytocinase; OTase; Placental leucine aminopeptidase; P-LAP; Vesicle protein of 165 kDa; Vp165癷? | Lnpep; Irap Otase; | NP_001106874.1;NP_598258.1;XP_003748754.1;XP_008757040.1; | 1025 | rat |
| P18424 | Phosphatidylcholine-sterol acyltransferase; EC 2.3.1.43; Lecithin-cholesterol acyltransferase; Phospholipid-cholesterol acyltransferase; | Lcat; | NULL | 440 | rat |
| Q0PGW2 | Protein LCHN; | Lchn; | NP_001038166.1; | 455 | rat |
| Q01621 | Proto-oncogene tyrosine-protein kinase LCK; EC 2.7.10.2; Lymphocyte cell-specific protein-tyrosine kinase; p56-LCK; | Lck; | NP_001094179.1;XP_006238995.1;XP_008762362.1; | 509 | rat |
| Q6P4Z6 | Leucine carboxyl methyltransferase 1; EC 2.1.1.233; [Phosphatase 2A protein]-leucine-carboxy methyltransferase 1; | Lcmt1; | NP_955437.1; | 332 | rat |
| B3EY83 | Epididymal-specific lipocalin-12; | Lcn12; | NULL | 193 | rat |
| P06911 | Epididymal-specific lipocalin-5; Androgen-dependent epididymal 18.5 kDa protein; Epididymal retinoic acid-binding protein; E-RABP; Epididymal secretory protein I; ESP-I; [Cleaved into: Epididymal-specific lipocalin-5, B form; Epididymal-specific lipocalin癷?癸 | Lcn5; Erabp; | NP_077050.1;XP_008759802.1; | 188 | rat |
| P04642 | L-lactate dehydrogenase A chain; LDH-A; EC 1.1.1.27; LDH muscle subunit; LDH-M; | Ldha; Ldh-1 Ldh1; | NP_058721.1; | 332 | rat |
| P42123 | L-lactate dehydrogenase B chain; LDH-B; EC 1.1.1.27; LDH heart subunit; LDH-H; | Ldhb; Ldh-2 Ldh2; | NP_036727.1;XP_006237677.1; | 334 | rat |
| P19629 | L-lactate dehydrogenase C chain; LDH-C; EC 1.1.1.27; LDH testis subunit; LDH-X; | Ldhc; Ldh-3 Ldh3; | NULL | 332 | rat |
| P35952 | Low-density lipoprotein receptor; LDL receptor; | Ldlr; | NP_786938.1; | 879 | rat |
| O70367 | Leukocyte cell-derived chemotaxin 1; [Cleaved into: Chondrosurfactant protein (CH-SP); Chondromodulin-1 (Chondromodulin-I) (ChM-I)]; | Lect1; Chmi; | NP_110481.1; | 334 | rat |
| Q9QXN1 | Lymphoid enhancer-binding factor 1; LEF-1; | Lef1; | NP_569113.1; | 397 | rat |
| P11762 | Galectin-1; Gal-1; 14 kDa lectin; Beta-galactoside-binding lectin L-14-I; Galaptin; Lactose-binding lectin 1; Lectin galactoside-binding soluble 1; RL 14.5; S-Lac lectin 1; | Lgals1; | NP_063969.1; | 135 | rat |
| Q9Z144 | Galectin-2; Gal-2; | Lgals2; | NP_598283.1; | 130 | rat |
| P08699 | Galectin-3; Gal-3; 35 kDa lectin; Carbohydrate-binding protein 35; CBP 35; Galactose-specific lectin 3; IgE-binding protein; Laminin-binding protein; Lectin L-29; Mac-2 antigen; | Lgals3; | NP_114020.1; | 262 | rat |
| P38552 | Galectin-4; Gal-4; L-36 lactose-binding protein; L36LBP; Lactose-binding lectin 4; | Lgals4; | NP_037107.1; | 324 | rat |
