8CCZ: Human Sirt3

Crystal structure of human Sirt3 in complex with an inhibiting HIV1 Tat-37-59 peptide. Determined by X-ray diffraction at 1.95 Å resolution. Released 10 May 2023.

Method: X-ray diffraction
Resolution: 1.95 Å
Organisms: Homo sapiens, Human immunodeficiency virus 1
Chains: 4
Atoms: 5,037
Mol. weight: 68.29 kDa
Ligands: ZN
Released: 10 May 2023

Explore 8CCZ in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

8CCZ contains 41 α-helices and 36 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: 20 helices, 15 β-strands

Element	Residues	Length	Sheet
α-helix	125-133	9
β-strand	140-144	5	1
α-helix	146-148	3
α-helix	150-152	3
α-helix	163-169	7
α-helix	176-180	5
β-strand	181	1	2
α-helix	182-187	6
α-helix	190-199	10
α-helix	208-218	11
β-strand	222-227	6	1
α-helix	233-236	4
α-helix	241-243	3
β-strand	244-246	3	1
β-strand	249-256	8	3
β-strand	262-264	3	3
α-helix	265-268	4
α-helix	269-273	5
β-strand	279	1	4
α-helix	285	1
β-strand	286	1	4
β-strand	287-291	5	3
β-strand	294	1	2
β-strand	297	1	5
α-helix	298-299	2
α-helix	300-304	5
α-helix	305-311	7
β-strand	314-318	5	1
β-strand	324-325	2	6
α-helix	328-332	5
β-strand	340-344	5	1
α-helix	350-353	4
β-strand	359-363	5	1
α-helix	366-377	12
α-helix	380-393	14

Chain B: 21 helices, 17 β-strands

Element	Residues	Length	Sheet
α-helix	125-133	9
β-strand	140-144	5	7
α-helix	146-148	3
α-helix	150-152	3
α-helix	154-156	3
β-strand	160	1	8
β-strand	162	1	8
α-helix	163-168	6
α-helix	176-180	5
β-strand	181	1	9
α-helix	182-187	6
α-helix	190-199	10
α-helix	208-218	11
β-strand	222-227	6	7
α-helix	233-236	4
α-helix	241-243	3
β-strand	244-246	3	7
β-strand	249-256	8	10
β-strand	262-264	3	10
α-helix	265-268	4
α-helix	269-273	5
β-strand	279	1	11
α-helix	285	1
β-strand	286	1	11
β-strand	287-291	5	10
β-strand	294	1	9
β-strand	297	1	12
α-helix	298-299	2
α-helix	300-304	5
α-helix	305-311	7
β-strand	314-318	5	7
β-strand	324-325	2	13
α-helix	328-332	5
β-strand	340-344	5	7
α-helix	350-353	4
β-strand	359-363	5	7
α-helix	366-377	12
α-helix	380-392	13

Chains C and D: 0 helices, 2 β-strands

Element	Residues	Length	Sheet
β-strand	49	1	5
β-strand	51-52	2	6

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
NAD-dependent protein deacetylase sirtuin-3, mitochondrial	A, B	protein	282	Homo sapiens	Q9NTG7 (AlphaFold model)
Protein Tat	C, D	protein	23	Human immunodeficiency virus 1	P12506

Sequence of entity 1 (A, B), FASTA

>8CCZ_1 NAD-dependent protein deacetylase sirtuin-3, mitochondrial (chains A, B)
SDKGKLSLQDVAELIRARACQRVVVMVGAGISTPSGIPDFRSPGSGLYSNLQQYDLPYPE
AIFELPFFFHNPKPFFTLAKELYPGNYKPNVTHYFLRLLHDKGLLLRLYTQNIDGLERVS
GIPASKLVEAHGTFASATCTVCQRPFPGEDIRADVMADRVPRCPVCTGVVKPDIVFFGEP
LPQRFLLHVVDFPMADLLLILGTSLEVEPFASLTEAVRSSVPRLLINRDLVGPLAWHPRS
RDVAQLGDVVHGVESLVELLGWTEEMRDLVQRETGKLDGPDK

Sequence of entity 2 (C, D), FASTA

>8CCZ_2 Protein Tat (chains C, D)
AFITKGLGISYGRKKRRQRRRPS

Ligands and cofactors

ID	Name	Formula	Copies
ZN	Zinc ion	Zn	2

Primary citation

Molecular Mechanism of Sirtuin 1 Inhibition by Human Immunodeficiency Virus 1 Tat Protein. Adolph, R.S., Beck, E., Schweimer, K. et al. Life (Basel) (2023) 13. DOI 10.3390/life13040949 · PubMed

Other PDB entries of the same protein (UniProt Q9NTG7 (AlphaFold model), which also has an AlphaFold model), best resolution first:

8ANC 1.11 Å, 14-3-3 sigma sirtuin-3 phospho-peptide complex
4BN4 1.3 Å, Structure of human SIRT3 in complex with ADP-ribose
8V5U 1.48 Å, Human SIRT3 bound to p53-AMC peptide and Honokiol
9S27 1.6 Å, Crystal structure of human SIRT3 in complex with the covalent adduct of peptide triazole…
8CCW 1.65 Å, Crystal structure of human Sirt3 in complex with an acetylated HIV1 Tat-46-54 substrate…
4JSR 1.7 Å, Crystal Structure of human SIRT3 with ELT inhibitor 11c…
8V2N 1.74 Å, Human SIRT3 co-crystallized with ligands, including p53-AMC peptide and Carba-NAD
3GLR 1.8 Å, Crystal Structure of human SIRT3 with acetyl-lysine AceCS2 peptide
5D7N 1.83 Å, Crystal structure of human Sirt3 at an improved resolution
5Z94 1.9 Å, Crystal Structure of SIRT3 in complex with H3K4bhb peptide
4BVH 1.9 Å, Crystal structure of human SIRT3 in complex with the inhibitor ex-527 and…
5BWN 1.94 Å, Crystal Structure of SIRT3 with a H3K9 Peptide Containing a Myristoyl Lysine

Browse structure collections

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