9UNY: Glyceraldehyde-3-phosphate dehydrogenase

Natural product inhibitor of glyceraldehyde-3-phosphate dehydrogenase(GAPDH). Determined by X-ray diffraction at 1.87 Å resolution. Released 29 Jul 2026.

Method: X-ray diffraction
Resolution: 1.87 Å
Organism: Homo sapiens
Chains: 4
Atoms: 10,509
Mol. weight: 147.42 kDa
Ligands: ARF, A1EP4
Released: 29 Jul 2026

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

Secondary structure: helices and β-sheets

9UNY contains 58 α-helices and 74 β-strands across 4 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: 14 helices, 18 β-strands

Element	Residues	Length	Sheet
β-strand	5-9	5	4
α-helix	13-25	13
β-strand	29-34	6	4
α-helix	40-48	9
β-strand	60-63	4	4
β-strand	66-69	4	4
β-strand	72-77	6	4
α-helix	82-84	3
α-helix	87-89	3
β-strand	94-97	4	4
α-helix	105-108	4
α-helix	110-113	4
β-strand	118-121	4	4
β-strand	130	1	4
α-helix	137-139	3
β-strand	146-148	3	4
α-helix	152-168	17
β-strand	170-179	10	5
β-strand	186	1	6
α-helix	196-199	4
β-strand	201	1	6
β-strand	207-209	3	5
α-helix	213-220	8
α-helix	222-224	3
β-strand	228-234	7	5
β-strand	241-249	9	5
α-helix	255-267	13
β-strand	274-277	4	5
α-helix	283-286	4
β-strand	293-304	12	5
β-strand	307-314	8	5
α-helix	318-333	16

Chain B: 14 helices, 18 β-strands

Element	Residues	Length	Sheet
β-strand	4-9	6	7
α-helix	13-25	13
β-strand	28-34	7	7
α-helix	40-48	9
β-strand	60-63	4	7
β-strand	66-69	4	7
β-strand	72-77	6	7
α-helix	82-84	3
β-strand	94-97	4	7
α-helix	105-108	4
α-helix	110-113	4
β-strand	118-121	4	7
α-helix	129	1
β-strand	130	1	7
α-helix	137-139	3
β-strand	146-148	3	7
α-helix	152-168	17
β-strand	170-179	10	8
β-strand	186	1	9
α-helix	196-199	4
β-strand	201	1	9
β-strand	207-210	4	8
α-helix	213-220	8
α-helix	222-224	3
β-strand	228-234	7	8
β-strand	241-249	9	8
α-helix	255-267	13
β-strand	274-277	4	8
α-helix	283-286	4
β-strand	293-304	12	8
β-strand	307-314	8	8
α-helix	318-333	16

Chain C: 16 helices, 19 β-strands

Element	Residues	Length	Sheet
β-strand	4-9	6	10
α-helix	13-25	13
β-strand	28-34	7	10
α-helix	40-48	9
β-strand	60-63	4	10
β-strand	66-69	4	10
β-strand	72-77	6	10
α-helix	82-84	3
α-helix	87-90	4
β-strand	94-97	4	10
α-helix	105-108	4
α-helix	110-113	4
β-strand	118-121	4	10
α-helix	129	1
β-strand	130	1	10
α-helix	137-139	3
β-strand	146-148	3	10
α-helix	154-168	15
β-strand	170-179	10	11
β-strand	186	1	12
α-helix	196-199	4
β-strand	201	1	12
β-strand	207-210	4	11
α-helix	213-220	8
α-helix	222-224	3
β-strand	228-234	7	11
β-strand	241-249	9	11
α-helix	255-267	13
β-strand	274-277	4	11
α-helix	283-286	4
β-strand	293-296	4	11
α-helix	297-299	3
β-strand	301-304	4	11
β-strand	307-314	8	11
α-helix	318-334	17

Chain P: 14 helices, 19 β-strands

Element	Residues	Length	Sheet
β-strand	5-9	5	1
α-helix	13-25	13
β-strand	29-34	6	1
α-helix	40-48	9
β-strand	60-63	4	1
β-strand	66-69	4	1
β-strand	72-77	6	1
α-helix	82-84	3
α-helix	87-90	4
β-strand	94-97	4	1
α-helix	105-108	4
α-helix	109-114	6
β-strand	118-121	4	1
β-strand	130	1	1
α-helix	137-139	3
β-strand	146-148	3	1
α-helix	152-168	17
β-strand	170-179	10	2
β-strand	186	1	3
α-helix	196-199	4
β-strand	201	1	3
β-strand	207-210	4	2
α-helix	217-220	4
α-helix	222-224	3
β-strand	228-234	7	2
β-strand	241-249	9	2
α-helix	255-267	13
β-strand	274-277	4	2
α-helix	283-286	4
β-strand	293-296	4	2
β-strand	301-304	4	2
β-strand	307-314	8	2
α-helix	318-333	16

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Glyceraldehyde-3-phosphate dehydrogenase	A, B, C, P	protein	335	Homo sapiens	P04406 (AlphaFold model)

Sequence of entity 1 (A, B, C, P), FASTA

>9UNY_1 Glyceraldehyde-3-phosphate dehydrogenase (chains A, B, C, P)
MGKVKVGVNGFGRIGRLVTRAAFNSGKVDIVAINDPFIDLNYMVYMFQYDSTHGKFHGTV
KAENGKLVINGNPITIFQERDPSKIKWGDAGAEYVVESTGVFTTMEKAGAHLQGGAKRVI
ISAPSADAPMFVMGVNHEKYDNSLKIISNASCTTNCLAPLAKVIHDNFGIVEGLMTTVHA
ITATQKTVDGPSGKLWRDGRGALQNIIPASTGAAKAVGKVIPELNGKLTGMAFRVPTANV
SVVDLTCRLEKPAKYDDIKKVVKQASEGPLKGILGYTEHQVVSSDFNSDTHSSTFDAGAG
IALNDHFVKLISWYDNEFGYSNRVVDLMAHMASKE

Ligands and cofactors

ID	Name	Formula	Copies
ARF	Formamide	C H3 N O	20
A1EP4	(1~{S},2~{S},5~{S},6~{S},8~{R},9~{S},10~{S},11~{R},15~{S},18~{R})-6,12,12-trime…	C20 H30 O6	2

Water and common crystallization additives (NA, ACT, EPE) are not listed.

Primary citation

GAPDH inhibition by oridonin integrates glycolytic inhibition and anti-inflammation to alleviate rheumatoid arthritis synovitis. Xiao, Q., Zhou, H., Li, M. et al. Phytomedicine (2026) 160:158650-158650. DOI 10.1016/j.phymed.2026.158650 · PubMed

Other PDB entries of the same protein (UniProt P04406 (AlphaFold model), which also has an AlphaFold model), best resolution first:

27FM 1.46 Å, Crystal structure of human glyceraldehyde-3-phosphate dehydrogenase bound to gold(I)
6YND 1.52 Å, GAPDH purified from the supernatant of HEK293F cells: crystal form 1 of 4.
1U8F 1.75 Å, Crystal Structure Of Human Placental Glyceraldehyde-3-Phosphate Dehydrogenase At 1.75…
9L3E 1.77 Å, Structure of GAPDH complexed with Leu-F
8P5F 1.82 Å, Human wild-type GAPDH,orthorhombic form
6M61 1.82 Å, Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) with inhibitor heptelidic acid
6YNE 1.85 Å, GAPDH purified from the supernatant of HEK293F cells: crystal form 2 of 4.
8G17 1.98 Å, CryoEM structure of wild-type GAPDH
4WNC 1.99 Å, Crystal structure of human wild-type GAPDH at 1.99 angstroms resolution
8G15 2.07 Å, CryoEM structure of nuclear GAPDH under 24h Oxidative Stress
8G16 2.07 Å, CryoEM structure of cytoplasmic GAPDH under 24h Oxidative Stress
8G12 2.17 Å, CryoEM structure of nuclear GAPDH under 8h Oxidative Stress

Browse structure collections

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