1SQN: Progesterone receptor

Progesterone Receptor Ligand Binding Domain with bound Norethindrone. Determined by X-ray diffraction at 1.45 Å resolution. Released 27 Jul 2004.

Method: X-ray diffraction
Resolution: 1.45 Å
Organism: Homo sapiens
Chains: 2
Atoms: 4,287
Mol. weight: 60.87 kDa
Ligands: NDR
Released: 27 Jul 2004

Explore 1SQN in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1SQN contains 23 α-helices and 8 β-strands across 2 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: 12 helices, 4 β-strands

Element	Residues	Length	Sheet
α-helix	686-694	9
α-helix	696-698	3
α-helix	711-735	25
α-helix	739-741	3
α-helix	744-771	28
β-strand	776-779	4	1
β-strand	782-784	3	1
α-helix	786-788	3
α-helix	792-811	20
α-helix	815-826	12
β-strand	829-830	2	2
α-helix	838-857	20
α-helix	863-896	34
α-helix	898-901	4
α-helix	907-921	15
β-strand	926-927	2	2

Chain B: 11 helices, 4 β-strands

Element	Residues	Length	Sheet
α-helix	686-693	8
α-helix	711-735	25
α-helix	739-741	3
α-helix	744-771	28
β-strand	776-779	4	3
β-strand	782-784	3	3
α-helix	786-790	5
α-helix	795-811	17
α-helix	815-826	12
β-strand	829-830	2	4
α-helix	838-857	20
α-helix	863-896	34
α-helix	898-901	4
α-helix	907-921	15
β-strand	926-927	2	4

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
progesterone receptor	A, B	protein	261	Homo sapiens	P06401 (AlphaFold model)

Sequence of entity 1 (A, B), FASTA

>1SQN_1 progesterone receptor (chains A, B)
FTFSPGQDIQLIPPLINLLMSIEPDVIYAGHDNTKPDTSSSLLTSLNQLGERQLLSVVKW
SKSLPGFRNLHIDDQITLIQYSWMSLMVFGLGWRSYKHVSGQMLYFAPDLILNEQRMKES
SFYSLCLTMWQIPQEFVKLQVSQEEFLCMKVLLLLNTIPLEGLRSQTQFEEMRSSYIREL
IKAIGLRQKGVVSSSQRFYQLTKLLDNLHDLVKQLHLYCLNTFIQSRALSVEFPEMMSEV
IAAQLPKILAGMVKPLLFHKK

Ligands and cofactors

ID	Name	Formula	Copies
NDR	Norethindrone	C20 H26 O2	2

Primary citation

Progesterone receptor ligand binding pocket flexibility: crystal structures of the norethindrone and mometasone furoate complexes. Madauss, K.P., Deng, J.-S., Austin, R.J.H. et al. J Med Chem (2004) 47:3381-3387. DOI 10.1021/jm030640n · PubMed

Other PDB entries of the same protein (UniProt P06401 (AlphaFold model), which also has an AlphaFold model), best resolution first:

1SR7 1.46 Å, Progesterone Receptor Hormone Binding Domain with Bound Mometasone Furoate
3ZR7 1.65 Å, Structural basis for agonism and antagonism for a set of chemically related progesterone…
1A28 1.8 Å, Hormone-bound human progesterone receptor ligand-binding domain
2W8Y 1.8 Å, RU486 bound to the progesterone receptor in a destabilized agonistic conformation
3ZRB 1.8 Å, Structural basis for agonism and antagonism for a set of chemically related progesterone…
3G8O 1.9 Å, Progesterone Receptor with bound Pyrrolidine 1
3ZRA 1.9 Å, Structural basis for agonism and antagonism for a set of chemically related progesterone…
4APU 1.9 Å, PR X-Ray structures in agonist conformations reveal two different mechanisms for partial…
1ZUC 2.0 Å, Progesterone receptor ligand binding domain in complex with the nonsteroidal agonist…
2OVH 2.0 Å, Progesterone Receptor with Bound Asoprisnil and a Peptide from the Co-Repressor SMRT
3KBA 2.0 Å, Progesterone receptor bound to sulfonamide pyrrolidine partial agonist
4A2J 2.0 Å, PR X-Ray structures in agonist conformations reveal two different mechanisms for partial…

Browse structure collections

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