lepirudin   Click here for help

GtoPdb Ligand ID: 6469

Synonyms: 1-L-leucine-2-L-threonine-63-desulfohirudin | Refludan®
Approved drug
lepirudin is an approved drug (FDA (1998))
Compound class: Peptide or derivative
Comment: Discontinued (not withdrawn). The drug is a recombinant form of hirudin, the salivary anticoagulant found in leeches (see UniProt P01050), but has two amino acid modifications; substitution of Leu1 for Ile and no sulfate group on Tyr63. The PubChem entry linked to above represents the chemical structure of Lepirudin.
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View more information in the IUPHAR Pharmacology Education Project: lepirudin

2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES NCCCC[C@@H](C(=O)N1CCC[C@H]1C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)O)CCC(=O)N)CC(C)C)Cc1ccc(cc1)O)CCC(=O)O)CCC(=O)O)[C@H](CC)C)CCC(=O)O)CCC(=O)O)Cc1ccccc1)CC(=O)O)CC(=O)O)CC(=O)N)Cc1nc[nH]c1)CO)CCC(=O)N)NC(=O)[C@@H]1CCCN1C(=O)[C@H]([C@H](O)C)NC(=O)CNC(=O)[C@@H](NC(=O)CNC(=O)[C@H]([C@H](O)C)NC(=O)[C@H](C(C)C)NC(=O)[C@@H]1CSSC[C@@H]2NC(=O)[C@@H](NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CO)NC(=O)CNC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CSSC[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)CNC(=O)[C@@H](NC(=O)CNC2=O)CCC(=O)N)CC(=O)N)CCCCN)C(=O)N[C@@H]([C@H](CC)C)C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1)CCC(=O)N)CC(=O)N)CCCCN)CCC(=O)O)CC(=O)O)CO)CC(C)C)NC(=O)[C@@H](NC(=O)[C@@H]1CSSC[C@H](NC(=O)[C@@H](NC(=O)[C@H]([C@H](O)C)NC(=O)[C@@H](NC(=O)[C@H]([C@H](O)C)NC(=O)[C@H](CC(C)C)N)Cc2ccc(cc2)O)CC(=O)O)C(=O)N[C@@H]([C@H](O)C)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1)CC(C)C)CC(=O)N)CCC(=O)N)CO)CC(C)C)C(C)C)CCC(=O)O
Isomeric SMILES NCCCC[C@@H](C(=O)N1CCC[C@H]1C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)O)CCC(=O)N)CC(C)C)Cc1ccc(cc1)O)CCC(=O)O)CCC(=O)O)[C@H](CC)C)CCC(=O)O)CCC(=O)O)Cc1ccccc1)CC(=O)O)CC(=O)O)CC(=O)N)Cc1nc[nH]c1)CO)CCC(=O)N)NC(=O)[C@@H]1CCCN1C(=O)[C@H]([C@H](O)C)NC(=O)CNC(=O)[C@@H](NC(=O)CNC(=O)[C@H]([C@H](O)C)NC(=O)[C@H](C(C)C)NC(=O)[C@@H]1CSSC[C@@H]2NC(=O)[C@@H](NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CO)NC(=O)CNC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CSSC[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)CNC(=O)[C@@H](NC(=O)CNC2=O)CCC(=O)N)CC(=O)N)CCCCN)C(=O)N[C@@H]([C@H](CC)C)C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1)CCC(=O)N)CC(=O)N)CCCCN)CCC(=O)O)CC(=O)O)CO)CC(C)C)NC(=O)[C@@H](NC(=O)[C@@H]1CSSC[C@H](NC(=O)[C@@H](NC(=O)[C@H]([C@H](O)C)NC(=O)[C@@H](NC(=O)[C@H]([C@H](O)C)NC(=O)[C@H](CC(C)C)N)Cc2ccc(cc2)O)CC(=O)O)C(=O)N[C@@H]([C@H](O)C)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1)CC(C)C)CC(=O)N)CCC(=O)N)CO)CC(C)C)C(C)C)CCC(=O)O
InChI Key FIBJDTSHOUXTKV-BRHMIFOHSA-N
Peptide Sequence Click here for help
LVYTDCTESGQNLCLCEGSNVCGQGNKCILGSDGEKNQCVTGEGTPKPQSHNDGDFEEIPEEYLQ
H-Leu-Thr-Tyr-Thr-Asp-Cys(1)-Thr-Glu-Ser-Gly-Gln-Asn-Leu-Cys(1)-Leu-Cys(2)-Glu-Gly-Ser-Asn-Val-Cys(3)-Gly-Gln-Gly-Asn-Lys-Cys(2)-Ile-Leu-Gly-Ser-Asp-Gly-Glu-Lys-Asn-Gln-Cys(3)-Val-Thr-Gly-Glu-Gly-Thr-Pro-Lys-Pro-Gln-Ser-His-Asn-Asp-Gly-Asp-Phe-Glu-Glu-Ile-Pro-Glu-Glu-Tyr-Leu-Gln-OH
HELM Notation Click here for help
PEPTIDE1{L.T.Y.T.D.C.T.E.S.G.Q.N.L.C.L.C.E.G.S.N.V.C.G.Q.G.N.K.C.I.L.G.S.D.G.E.K.N.Q.C.V.T.G.E.G.T.P.K.P.Q.S.H.N.D.G.D.F.E.E.I.P.E.E.Y.L.Q}$PEPTIDE1,PEPTIDE1,6:R3-14:R3|PEPTIDE1,PEPTIDE1,16:R3-28:R3|PEPTIDE1,PEPTIDE1,22:R3-39:R3$$$
Post-translational Modification
I1L at the N-terminal and absence of a sulfate group at Y63.
Download 2D Structure Click here for help
Canonical SMILES Download
Isomeric SMILES Download

Molecular structure representations generated using Open Babel