2026-02-14_00000424|ligand|9SS9

Human angiotensin 1-converting enzyme N-domain in complex with captopril; X-ray diffraction 2.50Å

Protein #1 628 residues (96% resolved)

Raw Sequence ...

LDPGLQPGQFSADEAGAQLFAQSYQSSAEQVLFQSVAASWAHDTNITAENARRQEEAALLSQEFAEAWGQKAKELYEPIWQQFTDPQLRRIIGAVRTLGSANLPLAKRQQYNALLSQMSRIYSTAKVCLPQKTATCWSLDPDLTNILASSRSYAMLLFAWEGWHNAAGIPLKPLYEDFTALSNEAYKQDGFTDTGAYWRSWYNSPTFEDDLEHLYQQLEPLYLNLHAFVRRALHRRYGDRYINLRGPIPAHLLGDMWAQSWENIYDMVVPFPDKPNLDVTSTMLQQGWQATHMFRVAEEFFTSLELSPMPPEFWEGSMLEKPADGREVVCHASAWDFYNRKDFRIKQCTRVTMDQLSTVHHEMGHIQYYLQYKDLPVSLRRGANPGFHEAIGDVLALSVSTPEHLHKIGLLDRVTNDTESDINYLLKMALEKIAFLPFGYLVDQWRWGVFSGRTPPSRYNFDWWYLRTKYQGICPPVTRNETHFDAGAKFHVPNVTPYIRYFVSFVLQFQFHEALCKEAGYEGPLHQCDIYRSTKAGAKLRKVLRAGSSRPWQEVLKDMVGLDALDAQPLLKYFQLVTQWLQEQNQQNGEVLGWPEYQWHPPLPDNYPEGIDLVTDEAEASKFVEEYD

Canonical Sequence ...

Non polymer #2 BCN

InChI=1S/C6H13NO4/c8-3-1-7(2-4-9)5-6(10)11/h8-9H,1-5H2,(H,10,11)

SMILES: C(CO)N(CCO)CC(=O)O

C(CO)N(CCO)CC(=O)O

Non polymer #3 CL

InChI=1S/ClH/h1H/p-1

SMILES: [Cl-]

[Cl-]

Non polymer #4 EDO

InChI=1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2

SMILES: C(CO)O

C(CO)O

Non polymer #5 MCO

InChI=1S/C9H15NO3S/c1-6(5-14)8(11)10-4-2-3-7(10)9(12)13/h6-7,14H,2-5H2,1H3,(H,12,13)/t6-,7-/m1/s1

SMILES: C[C@H](CS)C(=O)N1CCC[C@@H]1C(=O)O

C[C@H](CS)C(=O)N1CCC[C@@H]1C(=O)O

Non polymer #6 NAG

InChI=1S/C8H15NO6/c1-3(11)9-5-7(13)6(12)4(2-10)15-8(5)14/h4-8,10,12-14H,2H2,1H3,(H,9,11)/t4-,5-,6-,7-,8-/m1/s1

SMILES: CC(=O)N[C@@H]1[C@H]([C@@H]([C@H](O[C@H]1O)CO)O)O

CC(=O)N[C@@H]1[C@H]([C@@H]([C@H](O[C@H]1O)CO)O)O

Non polymer #7 PEG

InChI=1S/C4H10O3/c5-1-3-7-4-2-6/h5-6H,1-4H2

SMILES: C(COCCO)O

C(COCCO)O

Non polymer #8 PG4

InChI=1S/C8H18O5/c9-1-3-11-5-7-13-8-6-12-4-2-10/h9-10H,1-8H2

SMILES: C(COCCOCCOCCO)O

C(COCCOCCOCCO)O

Non polymer #9 PGE

InChI=1S/C6H14O4/c7-1-3-9-5-6-10-4-2-8/h7-8H,1-6H2

SMILES: C(COCCOCCO)O

C(COCCOCCO)O

Non polymer #10 X8Z

InChI=1S/C9H15NO3S/c1-6(5-14)8(11)10-4-2-3-7(10)9(12)13/h6-7,14H,2-5H2,1H3,(H,12,13)/t6-,7+/m1/s1

SMILES: C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O

C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O

Non polymer #11 ZN

InChI=1S/Zn/q+2

SMILES: [Zn+2]

[Zn+2]

Biounit #1 hetero-1-2-mer

Biounit #2 monomer

Reference