4JE3: Central kinetochore subunit IML3

An Iml3-Chl4 heterodimer links the core centromere to factors required for accurate chromosome segregation. Determined by X-ray diffraction at 2.28 Å resolution. Released 16 Oct 2013.

Method: X-ray diffraction
Resolution: 2.28 Å
Organism: Saccharomyces cerevisiae
Chains: 2
Atoms: 2,701
Mol. weight: 39.09 kDa
Released: 16 Oct 2013

Explore 4JE3 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

4JE3 contains 12 α-helices and 19 β-strands across 2 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: 10 helices, 14 β-strands

Element	Residues	Length	Sheet
β-strand	3-10	8	1
α-helix	21-26	6
β-strand	31-39	9	1
β-strand	52-60	9	1
α-helix	67-69	3
β-strand	72-77	6	1
β-strand	85-90	6	1
α-helix	95-107	13
β-strand	111-113	3	1
α-helix	118-128	11
β-strand	130-132	3	2
β-strand	138-140	3	2
β-strand	145-149	5	1
α-helix	154-156	3
β-strand	160-165	6	1
α-helix	167-175	9
α-helix	183	1
α-helix	184-188	5
α-helix	189-196	8
β-strand	198	1	3
β-strand	205-210	6	1
β-strand	214-217	4	1
β-strand	221-223	3	1
α-helix	230-239	10

Chain B: 2 helices, 5 β-strands

Element	Residues	Length	Sheet
β-strand	384-393	10	1
β-strand	396-405	10	1
α-helix	409-418	10
β-strand	422	1	3
α-helix	424-426	3
β-strand	440-443	4	1
β-strand	446-449	4	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Central kinetochore subunit IML3	A	protein	245	Saccharomyces cerevisiae	P38265 (AlphaFold model)
Central kinetochore subunit CHL4	B	protein	101	Saccharomyces cerevisiae	P38907 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>4JE3_1 Central kinetochore subunit IML3 (chains A)
SNAMPYTWKFLGISKQLSLENGIAKLNQLLNLEVDLDIQTIRVPSDPDGGTAADEYIRYE
MRLDISNLDEGTYSKFIFLGNSKMEVPMFLCYCGTDNRNEVVLQWLKAEYGVIMWPIKFE
QKTMIKLADASIVHVTKENIEQITWFSSKLYFEPETQDKNLRQFSIEIPRESCEGLALGY
GNTMHPYNDAIVPYIYNETGMAVERLPLTSVILAGHTKIMRESIVTSTRSLRNRVLAVVL
QSIQF

Sequence of entity 2 (B), FASTA

>4JE3_2 Central kinetochore subunit CHL4 (chains B)
SNAGKKNEDSGEPVYISRYSSLVPIEKVGFTLKNEINSRIITIKLKFNGNDIFGGLHELC
DKNLINIDKVPGWLAGENGSFSGTIMNGDFQREQVAKGGLL

Primary citation

An iml3-chl4 heterodimer links the core centromere to factors required for accurate chromosome segregation. Hinshaw, S.M., Harrison, S.C. Cell Rep (2013) 5:29-36. DOI 10.1016/j.celrep.2013.08.036 · PubMed

Other PDB entries of the same protein (UniProt P38265 (AlphaFold model), which also has an AlphaFold model), best resolution first:

4IT3 2.5 Å, Crystal Structure of Iml3 from S. cerevisiae
4KR1 2.5 Å, Crystal structure of the kinetechore protein Iml3 from budding yeast
10FI 3.3 Å, apo CCAN purified from budding yeast
8OVW 3.4 Å, Cryo-EM structure of CBF1-CCAN bound topologically to centromeric DNA
8OW0 3.4 Å, Cryo-EM structure of CBF1-CCAN bound topologically to a centromeric CENP-A nucleosome
6QLF 3.45 Å, Structure of inner kinetochore CCAN complex with mask1
6QLE 3.55 Å, Structure of inner kinetochore CCAN complex
8OW1 3.7 Å, Cryo-EM structure of the yeast Inner kinetochore bound to a CENP-A nucleosome.
10DQ 3.9 Å, Cbf1-CCAN-CEN complex
6QLD 4.15 Å, Structure of inner kinetochore CCAN-Cenp-A complex
6NUW 4.25 Å, Yeast Ctf19 complex
10JC 6.5 Å, CCAN dimer purified from budding yeast

Browse structure collections

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