9RVT: ACE2 extracellular domain

ACE2 extracellular domain in complex with the macrocyclic peptide GR1.4. Determined by X-ray diffraction at 2.39 Å resolution. Released 8 Apr 2026.

Method
X-ray diffraction
Resolution
2.39 Å
Organisms
Homo sapiens, synthetic construct
Chains
8
Atoms
20,476
Mol. weight
288.3 kDa
Released
8 Apr 2026

Explore 9RVT in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9RVT contains 156 α-helices and 51 β-strands across 8 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 39 helices, 11 β-strands

ElementResiduesLengthSheet
α-helix21-5232
α-helix56-8025
α-helix91-10212
α-helix110-12920
β-strand132-13321
β-strand141-14221
α-helix144-1485
α-helix149-1546
α-helix158-16710
α-helix168-1725
α-helix173-19321
α-helix199-2035
α-helix204-2074
β-strand20912
β-strand21712
α-helix219-25133
β-strand26013
α-helix2611
β-strand262-26324
α-helix276-2783
α-helix279-2824
α-helix289-2902
α-helix294-2996
α-helix304-31714
α-helix320-3245
α-helix325-3306
β-strand33215
β-strand347-35265
β-strand355-35955
α-helix366-38419
α-helix385-3873
α-helix390-3923
α-helix400-41213
α-helix415-4206
α-helix432-44615
α-helix449-46517
α-helix470-4723
α-helix473-4808
α-helix481-4855
β-strand487-48824
α-helix499-5024
α-helix504-5074
α-helix514-53219
α-helix539-5413
α-helix548-55811
α-helix566-5749
α-helix582-5876
α-helix589-59810
α-helix599-6013
β-strand60713
Chain B: 38 helices, 11 β-strands
ElementResiduesLengthSheet
α-helix21-5232
α-helix58-8023
α-helix85-873
α-helix91-10212
α-helix110-12920
β-strand131-13336
β-strand141-14336
α-helix144-1485
α-helix149-1546
α-helix158-16710
α-helix168-1725
α-helix173-19321
α-helix199-2046
β-strand20917
β-strand21717
α-helix219-25133
β-strand26018
α-helix2611
β-strand262-26329
α-helix276-2783
α-helix279-2824
α-helix294-2996
α-helix304-31714
α-helix320-3245
α-helix327-3304
β-strand332110
β-strand347-352610
β-strand355-359510
α-helix366-38419
α-helix385-3873
α-helix390-3923
α-helix400-41213
α-helix415-4206
α-helix432-44514
α-helix449-46517
α-helix470-4723
α-helix473-4808
α-helix481-4855
β-strand487-48829
α-helix499-5024
α-helix504-5074
α-helix514-53219
α-helix539-5413
α-helix548-55811
α-helix566-5749
α-helix582-5876
α-helix589-59810
α-helix599-6013
β-strand60718
Chains C and E: 0 helices, 2 β-strands
ElementResiduesLengthSheet
β-strand85-88411
β-strand91-93311
Chain D: 40 helices, 11 β-strands
ElementResiduesLengthSheet
α-helix21-5232
α-helix56-8025
α-helix91-10515
α-helix110-12920
β-strand131-133312
β-strand141-143312
α-helix144-1485
α-helix149-1546
α-helix158-16710
α-helix168-1736
α-helix174-19320
α-helix199-2046
α-helix205-2073
β-strand209113
β-strand217113
α-helix219-25133
β-strand260114
α-helix2611
β-strand262-263215
α-helix264-2663
α-helix276-2783
α-helix279-2824
α-helix289-2902
α-helix294-2996
α-helix304-31714
α-helix320-3245
α-helix325-3306
β-strand332116
β-strand347-352616
β-strand355-359516
α-helix366-38419
α-helix390-3923
α-helix400-41213
α-helix415-4206
α-helix432-44615
α-helix450-46516
α-helix470-4723
α-helix473-4808
α-helix481-4855
β-strand487-488215
α-helix499-5024
α-helix504-5074
α-helix514-53219
α-helix539-5413
α-helix548-55811
α-helix566-5749
α-helix579-5802
α-helix582-5876
α-helix589-59810
α-helix603-6042
β-strand607114
Chains F and H: 0 helices, 2 β-strands
ElementResiduesLengthSheet
β-strand85-86218
β-strand92-93218
Chain G: 39 helices, 10 β-strands
ElementResiduesLengthSheet
α-helix21-5232
α-helix56-8025
α-helix85-873
α-helix91-10111
α-helix110-12920
β-strand132-134319
β-strand137-142619
α-helix144-1485
α-helix149-1546
α-helix158-16811
α-helix169-1735
α-helix174-19219
α-helix199-2046
β-strand209120
β-strand217120
α-helix219-25133
β-strand260121
α-helix2611
β-strand262-263222
α-helix264-2663
α-helix276-2783
α-helix279-2824
α-helix289-2902
α-helix294-2985
α-helix304-31714
α-helix320-3245
α-helix325-3284
β-strand347-350423
β-strand356-359423
α-helix366-38419
α-helix385-3873
α-helix390-3923
α-helix400-41213
α-helix415-4206
α-helix432-44615
α-helix449-46517
α-helix470-4723
α-helix473-4808
α-helix481-4855
β-strand487-488222
α-helix499-5024
α-helix504-5074
α-helix513-53220
α-helix539-5413
α-helix548-55811
α-helix566-5749
α-helix582-59817
α-helix599-6013
β-strand607121

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Processed angiotensin-converting enzyme 2A, B, D, Gprotein609Homo sapiensQ9BYF1 (AlphaFold model)
macrocyclic peptide GR1.4C, E, F, Hprotein14synthetic construct
Sequence of entity 1 (A, B, D, G), FASTA
>9RVT_1 Processed angiotensin-converting enzyme 2 (chains A, B, D, G)
GSTIEEQAKTFLDKFNHEAEDLFYQSSLASWNYNTNITEENVQNMNNAGDKWSAFLKEQS
TLAQMYPLQEIQNLTVKLQLQALQQNGSSVLSEDKSKRLNTILNTMSTIYSTGKVCNPDN
PQECLLLEPGLNEIMANSLDYNERLWAWESWRSEVGKQLRPLYEEYVVLKNEMARANHYE
DYGDYWRGDYEVNGVDGYDYSRGQLIEDVEHTFEEIKPLYEHLHAYVRAKLMNAYPSYIS
PIGCLPAHLLGDMWGRFWTNLYSLTVPFGQKPNIDVTDAMVDQAWDAQRIFKEAEKFFVS
VGLPNMTQGFWENSMLTDPGNVQKAVCHPTAWDLGKGDFRILMCTKVTMDDFLTAHHEMG
HIQYDMAYAAQPFLLRNGANEGFHEAVGEIMSLSAATPKHLKSIGLLSPDFQEDNETEIN
FLLKQALTIVGTLPFTYMLEKWRWMVFKGEIPKDQWMKKWWEMKREIVGVVEPVPHDETY
CDPASLFHVSNDYSFIRYYTRTLYQFQFQEALCQAAKHEGPLHKCDISNSTEAGQKLFNM
LRLGKSEPWTLALENVVGAKNMNVRPLLNYFEPLFTWLKDQNKNSFVGWSTDWSPYADSS
PHHHHHHHH
Sequence of entity 2 (C, E, F, H), FASTA
>9RVT_2 macrocyclic peptide GR1.4 (chains C, E, F, H)
ACEPLGYNLFLCSG

Primary citation

Yeast Display Technology Enables Rapid Discovery of Low-Nanomolar Macrocyclic Peptide Inhibitors of Human Angiotensin-Converting Enzyme 2. Romanyuk, Z., Bettin, G., Brear, P. et al. J Med Chem (2026) 69:7689-7708. DOI 10.1021/acs.jmedchem.5c02876 · PubMed

Other PDB entries of the same protein (UniProt Q9BYF1 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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