9HC3: Metabotropic glutamate receptor 5,Endolysin

Apo-state structure of the human metabotropic glutamate receptor 5 transmembrane domain freeze-trapped after light activation of photoswitchable ligand alloswitch-1. Determined by X-ray diffraction at 2.9 Å resolution. Released 25 Jun 2025.

Method: X-ray diffraction
Resolution: 2.9 Å
Organisms: Homo sapiens, Enterobacteria phage T4
Chains: 1
Atoms: 3,349
Mol. weight: 51.05 kDa
Ligands: OLA
Released: 25 Jun 2025

Explore 9HC3 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9HC3 contains 22 α-helices and 6 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: 22 helices, 6 β-strands

Element	Residues	Length	Sheet
α-helix	569-575	7
α-helix	580-603	24
α-helix	608-611	4
α-helix	615-630	16
α-helix	632-635	4
α-helix	641-1010	47
β-strand	1014-1015	2	1
β-strand	1016	1	2
β-strand	1017-1019	3	1
β-strand	1025-1028	4	1
β-strand	1031-1034	4	1
α-helix	1039-1050	12
β-strand	1057	1	2
α-helix	1060-1080	21
α-helix	1085-1089	5
α-helix	1093-1106	14
α-helix	1108-1111	4
α-helix	1115-1122	8
α-helix	1126-1134	9
α-helix	1137-1141	5
α-helix	1143-1155	13
α-helix	1158-1160	3
α-helix	691-714	24
α-helix	738-759	22
α-helix	766-793	28
α-helix	798-813	16
α-helix	814-818	5
α-helix	819-827	9

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Metabotropic glutamate receptor 5,Endolysin	A	protein	444	Homo sapiens, Enterobacteria phage T4	P00720, P41594 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>9HC3_1 Metabotropic glutamate receptor 5,Endolysin (chains A)
AASPVQYLRWGDPAPIAAVVFACLGLLATLFVTVVFIIYRDTPVVKSSSRELCYIILAGI
CLGYLCTFCLIAKPKQIYCYLQRIGIGLSPAMSYSALVTKTYRAARILAMSKKNIFEMLR
IDEGLRLKIYKDTEGYYTIGIGHLLTKSPSLNAAKSELDKAIGRNTNGVITKDEAEKLFN
QDVDAAVRGILRNAKLKPVYDSLDAVRRAALINMVFQMGETGVAGFTNSLRMLQQKRWDE
AAVNLAKSRWYNQTPNRAKRVITTFRTGTWDAYKICTKKPRFMSACAQLVIAFILICIQL
GIIVALFIMEPPDIMHDYPSIREVYLICNTTNLGVVAPLGYNGLLILACTFYAFKTRNVP
ANFNEAKYIAFTMYTTCIIWLAFVPIYFGSNYKIITMCFSVSLSATVALGCMFVPKVYII
LAKPERNVRSAAAAHHHHHHHHHH

Ligands and cofactors

ID	Name	Formula	Copies
OLA	Oleic acid	C18 H34 O2	4

Primary citation

Apo-state structure of the metabotropic glutamate receptor 5 transmembrane domain obtained using a photoswitchable ligand. Kondo, Y., Hatton, C., Cheng, R. et al. Protein Sci (2025) 34:e70104-e70104. DOI 10.1002/pro.70104 · PubMed

Other PDB entries of the same protein (UniProt P00720), best resolution first:

2O7A 0.84 Å, T4 lysozyme C-terminal fragment
5JDT 1.0 Å, Structure of Spin-labelled T4 lysozyme mutant L118C-R1 at 100K
7LOE 1.01 Å, T4 lysozyme mutant L99A in complex with 1-fluoranylnaphthalene
7LOD 1.02 Å, T4 lysozyme mutant L99A in complex with 1-fluoranyl-4-iodanyl-benzene
7LX8 1.03 Å, T4 lysozyme mutant L99A
5XPF 1.04 Å, High-resolution X-ray structure of the T26H mutant of T4 lysozyme
6BG3 1.05 Å, Structure of (3S,4S)-1-benzyl-4-(3-(3-(trifluoromethyl)phenyl)ureido)piperidin-3-yl…
7LOF 1.05 Å, T4 lysozyme mutant L99A in complex with 2-butylthiophene
7LX6 1.05 Å, T4 lysozyme mutant L99A
7LX7 1.05 Å, T4 lysozyme mutant L99A
1SWY 1.06 Å, Use of a Halide Binding Site to Bypass the 1000-atom Limit to Ab initio Structure…
1SWZ 1.06 Å, Use of an ion-binding site to bypass the 1000-atom limit to ab initio structure…

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