| Kinase Domain of Pyruvate Kinase, porcine liver |
| Kinetensin |
| Kisspeptin-13 (4-13) (human) |
| Kisspeptin-13 (human) |
| Kisspeptin-54 (27-54) (human) |
| KK4A |
| KL-1 |
| K-R-Q-H-P-G |
| Kyotorphin |
| Laminin (925-933) |
| Laminin (929-933) |
| Laminin A Chain (2091-2108) |
| Laminin Nonapeptide, Amide |
| Laminin Penta Peptide, amide |
| Lamprey PQRFamide |
| LEAP-2 (38 - 77) (Human) |
| Leptin (116-130), mouse |
| Leptin (22-56), human; |
| Leptin (93-105) (human) |
| Leptin Receptor Precursor |
| Leucokinin I |
| Leucokinin II |
| Leucokinin III |
| Leucokinin IV |
| Leucokinin V |
| Leucokinin VII |
| Leucokinin VIII |
| Leucomyosuppressin (lms) |
| Leucopyrokinin (4-8); Pheromonotropic Pentapeptide |
| Leucopyrokinin (LPK) |
| Leu-Enkephalin |
| Leu-Enkephalin, amide |
| Leuprorelin Acetate |
| Leu-Valorphin-Arg |
| Levitide |
| LF 20 Consensus Peptide. Anthrax Related Lethal Factor |
| LHRH (4-10) |
| LH-RH, salmon |
| LHRH-Ⅲ, lamprey |
| Litorin |
| Liver Cell Growth Factor; GHK |
| LKRApYLG-NH2 |
| LL - 37 pentamide |
| LL - 37, Antimicrobial Peptide, human |
| LL - 37, reverse sequence |
| LMP1 (156 - 164), IAL |
| LMP1,TDD |
| LMP2 (236 - 244) , RRR |
| LMP2 (419 - 427), TYG |
| Locustachykinin I |
| Locustachykinin II |
| L-Selectin |
| Luteinizing Hormone Releasing Hormone |
| Luteinizing Hormone-Releasing Hormone, free acid, human; LH-RH, free acid, human |
| Lymphocyte Activating Pentapeptide |
| Lys-(Ala3)-Bradykinin |
| Lys(Boc)-Leu-Lys(Boc)-OBzl |
| Lys-(Des-Arg9)-Bradykinin |
| Lys-(Des-Arg9,Leu8)-Bradykinin |
| Lys-(Hyp3)-Bradykinin |
| Lys-(Tyr8)-Bradykinin |
| Lys-Bradykinin-Ser-Val-Gln-Val-Ser |
| Lysipressin Acetate |
| Lys-Lys-IRS-1 (891-902) (dephosphorylated) (human) |
| Lytic Peptide, SB – 37 |
| Lytic Peptide, Shiva – 1 |
| M35 |
| M40 |
| Macrophage Inhibitory Peptide |
| Magainin 1 |
| Magainin 2 |
| Magainin Spacer Peptide |
| Mage-1 Antigen (161-169), human |
| MAGE-3 Antigen (167-176), human |
| MAGE-3 Antigen (271-279)], human |
| Malantide |
| MAP Kinase Substrate; EGF-R (661-681) |
| MARCKS Protein (151-175) |
| MARCKS Protein (159-165) |
| MARCKS PSD-Derived Peptide, PKC Substrate |
| MARCKS Substrate (151-175) |
| MART-1 (26-35) (human) |
| MART-1 (27-35) (human) |
| Mas17 |
| Mas8 |
| Mast Cell Degranulating (MCD) Peptide |
| Mast Cell Degranulating (MCD) Peptide HR-1 |
| Mast Cell Degranulating (MCD) Peptide HR-2 |
| Mastoparan |
| Mastoparan 7 |
| Mastoparan X |
| Mating Factor aSK2 |
| MBP (1 - 11), mouse |
| MBP (1 - 17) |
| MBP (1-11), human |
| MBP (68-82), gulinea pig; |
| MBP (74 - 85), guinea pig |
| MBP (87-99), human; |
| MBP (90-106) |
| MBP (90-106), phosphorylated |
