7IOZ: A2A

Name: PDB 7IOZ: Crystal structure of A2A in complex with FU223-7
Published: 2026-05-20
License: https://creativecommons.org/publicdomain/zero/1.0/
Keywords: membrane protein

Crystal structure of A2A in complex with FU223-7. Determined by X-ray diffraction at 1.88 Å resolution. Released 20 May 2026.

Method: X-ray diffraction
Resolution: 1.88 Å
Organisms: Homo sapiens, Escherichia coli
Chains: 1
Atoms: 3,761
Mol. weight: 58.46 kDa
Ligands: A1CP5, OLC, OLA, CLR
Released: 20 May 2026

Explore 7IOZ in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

7IOZ contains 25 α-helices and 2 β-strands across 1 chain. 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: 25 helices, 2 β-strands

Element	Residues	Length	Sheet
α-helix	2-33	32
α-helix	35-37	3
α-helix	40-54	15
α-helix	55-59	5
α-helix	60-67	8
β-strand	71-73	3	1
α-helix	74-107	34
α-helix	109-115	7
α-helix	118-136	19
α-helix	138-141	4
α-helix	151-156	6
α-helix	159-160	2
β-strand	163-165	3	1
α-helix	168-171	4
α-helix	174-175	2
α-helix	176-187	12
α-helix	188-1019	40
α-helix	1023-1041	19
α-helix	1060-1080	21
α-helix	1084-1092	9
α-helix	1094-1097	4
α-helix	1098-1102	5
α-helix	1103-258	44
α-helix	263-266	4
α-helix	267-291	25
α-helix	293-303	11
α-helix	304-308	5

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Adenosine receptor A2a/Soluble cytochrome b562/Adenosine receptor A2a chimera	A	protein	433	Homo sapiens, Escherichia coli	P0ABE7 (AlphaFold model), P29274 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>7IOZ_1 Adenosine receptor A2a/Soluble cytochrome b562/Adenosine receptor A2a chimera (chains A)
DYKDDDDGAPPIMGSSVYITVELAIAVLAILGNVLVCWAVWLNSNLQNVTNYFVVSLAAA
DILVGVLAIPFAITISTGFCAACHGCLFIACFVLVLAQSSIFSLLAIAIDRYIAIAIPLR
YNGLVTGTRAAGIIAICWVLSFAIGLTPMLGWNNCGQPKEGKAHSQGCGEGQVACLFEDV
VPMNYMVYFNFFACVLVPLLLMLGVYLRIFAAARRQLADLEDNWETLNDNLKVIEKADNA
AQVKDALTKMRAAALDAQKATPPKLEDKSPDSPEMKDFRHGFDILVGQIDDALKLANEGK
VKEAQAAAEQLKTTRNAYIQKYLERARSTLQKEVHAAKSAAIIAGLFALCWLPLHIINCF
TFFCPDCSHAPLWLMYLAIVLSHTNSVVNPFIYAYRIREFRQTFRKIIRSHVLRQQEPFK
AAAHHHHHHHHHH

Ligands and cofactors

ID	Name	Formula	Copies
A1CP5	5-chloro-1,3-benzothiazol-2(3H)-one	C7 H4 Cl N O S	1
OLC	(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate	C21 H40 O4	7
OLA	Oleic acid	C18 H34 O2	22
CLR	Cholesterol	C27 H46 O	3
TEP	Theophylline	C7 H8 N4 O2	1

Water and common crystallization additives (DMS, PEG, NA) are not listed.

Primary citation

An integrated experimental and computational pipeline for crystallographic fragment screening of membrane protein in the lipid cubic phase. Huang, C.Y., Cheng, R., Metz, A. et al. Commun Chem (2026) 9. DOI 10.1038/s42004-026-02059-7 · PubMed

Other PDB entries of the same protein (UniProt P0ABE7 (AlphaFold model), which also has an AlphaFold model), best resolution first:

6DYF 1.1 Å, Cu(II)-bound structure of the engineered cyt cb562 variant, CH3Y
5YO6 1.2 Å, Crystal Structure of B562RIL with engineered disulfide bond T9C-A36C
4JEA 1.22 Å, Crystal structure of an engineered Zn-RIDC1 construct with four interfacial disulfide…
7LSJ 1.26 Å, Cu-bound crystal structure of the engineered cyt cb562 variant, DiCyt2 - H63A,…
7MK4 1.27 Å, Co-bound crystal structure of the engineered cyt cb562 variant, DiCyt2
6DYC 1.33 Å, Co(II)-bound structure of the engineered cyt cb562 variant, CH3
5YO4 1.37 Å, Crystal Structure of B562RIL with engineered disulfide bond K27C-A79C
256B 1.4 Å, Improvement of the 2.5 Å resolution model of cytochrome B562 by redetermining the…
6OT4 1.4 Å, Bimetallic dodecameric cage design 2 (BMC2) from cytochrome cb562
7LRV 1.4 Å, Ni-bound crystal structure of the engineered cyt cb562 variant, DiCyt2, crystallized in…
9PQ4 1.48 Å, Bi-bound structure of the H77C variant of TriCyt2
6DYG 1.49 Å, Fe(II)-bound structure of the engineered cyt cb562 variant, CH3Y

Browse structure collections

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