4N88: Tse3-Tsi3 complex with calcium ion

Crystal structure of Tse3-Tsi3 complex with calcium ion. Determined by X-ray diffraction at 2.8 Å resolution. Released 23 Apr 2014.

Method: X-ray diffraction
Resolution: 2.8 Å
Organism: Pseudomonas aeruginosa
Chains: 4
Atoms: 8,151
Mol. weight: 114.82 kDa
Ligands: CA
Released: 23 Apr 2014

Explore 4N88 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

4N88 contains 70 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: 33 helices, 6 β-strands

Element	Residues	Length	Sheet
α-helix	3-12	10
β-strand	15	1	1
β-strand	18	1	1
α-helix	23-34	12
α-helix	39-47	9
α-helix	51-58	8
α-helix	62-73	12
α-helix	80-90	11
α-helix	101-103	3
α-helix	108-125	18
α-helix	130-132	3
α-helix	135-137	3
α-helix	147-150	4
α-helix	154-156	3
α-helix	158-160	3
α-helix	162-169	8
α-helix	173-179	7
α-helix	186-191	6
α-helix	195-207	13
β-strand	209	1	2
α-helix	210	1
α-helix	215-217	3
α-helix	222-223	2
β-strand	224	1	2
α-helix	225-236	12
α-helix	240-252	13
α-helix	256-264	9
β-strand	275-276	2	3
β-strand	281-282	2	3
α-helix	283-288	6
α-helix	298-303	6
α-helix	306-312	7
α-helix	316-335	20
α-helix	339-341	3
α-helix	343-348	6
α-helix	355-358	4
α-helix	361-363	3
α-helix	366-377	12
α-helix	389-401	13

Chain B: 3 helices, 13 β-strands

Element	Residues	Length	Sheet
β-strand	29	1	4
β-strand	34-35	2	4
α-helix	38-39	2
β-strand	42-47	6	5
β-strand	50-55	6	5
β-strand	64	1	6
β-strand	67-70	4	5
α-helix	73-75	3
β-strand	79-81	3	5
β-strand	88-98	11	5
β-strand	101-112	12	5
β-strand	115-121	7	5
β-strand	122	1	6
β-strand	124-125	2	5
α-helix	133-140	8
β-strand	143-144	2	4

Chain C: 31 helices, 6 β-strands

Element	Residues	Length	Sheet
α-helix	3-12	10
β-strand	15	1	7
β-strand	18	1	7
α-helix	23-34	12
α-helix	39-48	10
α-helix	51-58	8
α-helix	62-75	14
α-helix	80-89	10
α-helix	101-103	3
α-helix	108-124	17
α-helix	147-150	4
α-helix	154-156	3
α-helix	158-161	4
α-helix	162-170	9
α-helix	173-179	7
α-helix	186-192	7
α-helix	195-207	13
β-strand	209	1	8
α-helix	210	1
α-helix	215-217	3
α-helix	222-223	2
β-strand	224	1	8
α-helix	225-236	12
α-helix	240-252	13
α-helix	256-267	12
β-strand	275-276	2	9
β-strand	281-282	2	9
α-helix	283-288	6
α-helix	298-303	6
α-helix	306-312	7
α-helix	316-335	20
α-helix	339-341	3
α-helix	343-348	6
α-helix	356-358	3
α-helix	361-363	3
α-helix	366-377	12
α-helix	389-401	13

Chain D: 3 helices, 11 β-strands

Element	Residues	Length	Sheet
β-strand	28-29	2	10
β-strand	35-36	2	10
α-helix	37-39	3
β-strand	42-46	5	11
β-strand	50-55	6	11
β-strand	64-70	7	11
α-helix	73-75	3
β-strand	83	1	12
β-strand	86	1	12
β-strand	89-98	10	11
β-strand	101-112	12	11
β-strand	115-125	11	11
α-helix	133-140	8
β-strand	143	1	10

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Uncharacterized protein	A, C	protein	401	Pseudomonas aeruginosa	Q9HYC5 (AlphaFold model)
Uncharacterized protein	B, D	protein	123	Pseudomonas aeruginosa	Q9HYC4 (AlphaFold model)

Sequence of entity 1 (A, C), FASTA

>4N88_1 Uncharacterized protein (chains A, C)
TATSDLIESLISYSWDDWQVTRQEARRVIAAIRNDNVPDATIAALDKSGSLIKLFQRVGP
PELARSLIASIAGRTTMQRYQARNALIRSLINNPLGTQTDNWIYFPTITFFDICADLADA
AGRLGFAAAGATGVASQAIQGPFSGVGATGVNPTDLPSIAFGDQLKLLNKDPATVTKYSN
PLGDLGAYLSQLSPQDKLNQAQTLVGQPISTLFPDAYPGNPPSRAKVMSAAARKYDLTPQ
LIGAIILAEQRDQTRDEDAKDYQAAVSIKSANTSIGLGQVVVSTAIKYELFTDLLGQPVR
RGLSRKAVATLLASDEFNIFATARYIRYVANLASQQDLRKLPKTRGAFPSIDLRAYAGNP
RNWPRDNVRALASEYTSRPWDDNLSPGWPMFVDDAYATFLD

Sequence of entity 2 (B, D), FASTA

>4N88_2 Uncharacterized protein (chains B, D)
SHMMTLTHPNGLVVERPVGFDARRSAEGFRFDEGGKLRNPRQLEVQRQDAPPPPDLASRR
LGDGEARYKVEEDDGGSAGSEYRLWAAKPAGARWIVVSASEQSEDGEPTFALAWALLERA
RLQ

Ligands and cofactors

ID	Name	Formula	Copies
CA	Calcium ion	Ca	8

Primary citation

Structural insights into the T6SS effector protein Tse3 and the Tse3-Tsi3 complex from Pseudomonas aeruginosa reveal a calcium-dependent membrane-binding mechanism. Lu, D., Shang, G., Zhang, H. et al. Mol Microbiol (2014) 92:1092-1112. DOI 10.1111/mmi.12616 · PubMed

Other PDB entries of the same protein (UniProt Q9HYC5 (AlphaFold model), which also has an AlphaFold model), best resolution first:

4M5E 1.49 Å, Tse3 structure
4LUQ 1.77 Å, Crystal structure of virulence effector Tse3 in complex with neutralizer Tsi3
3WA5 1.9 Å, Crystal Structure of type VI peptidoglycan muramidase effector Tse3 in complex with its…
4N7S 2.1 Å, Crystal structure of Tse3-Tsi3 complex with Zinc ion
4N80 2.4 Å, Crystal structure of Tse3-Tsi3 complex
4M5F 2.5 Å, complex structure of Tse3-Tsi3

Browse structure collections

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