6I4M: Plasmodium berghei actin II in the Mg-ADP state

Crystal Structure of Plasmodium berghei actin II in the Mg-ADP state. Determined by X-ray diffraction at 1.87 Å resolution. Released 26 Jun 2019.

Method
X-ray diffraction
Resolution
1.87 Å
Organisms
Plasmodium berghei (strain Anka), Mus musculus
Chains
2
Atoms
4,440
Mol. weight
57.64 kDa
Ligands
ADP, MG, SCN, CA
Released
26 Jun 2019

Explore 6I4M in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

6I4M contains 32 α-helices and 26 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: 25 helices, 19 β-strands

ElementResiduesLengthSheet
β-strand8-1251
β-strand16-2161
β-strand29-3241
β-strand35-3732
β-strand53-5422
α-helix56-605
β-strand66-6832
α-helix79-879
α-helix88-947
α-helix98-1003
β-strand103-10751
α-helix113-1219
α-helix122-1265
β-strand131-13661
α-helix137-1448
β-strand150-15563
β-strand160-16673
β-strand169-17023
α-helix172-1743
β-strand176-17833
α-helix182-19413
α-helix203-21614
β-strand21814
α-helix223-23210
α-helix234-2363
β-strand239-24245
β-strand248-25145
α-helix254-2607
α-helix265-2684
α-helix273-2742
α-helix275-28410
α-helix288-2958
β-strand298-30143
α-helix303-3053
β-strand30814
α-helix310-32112
α-helix3231
β-strand330-33123
α-helix336-3383
α-helix339-34911
α-helix351-3533
β-strand358-35921
α-helix360-3667
α-helix370-3745
Chain G: 7 helices, 7 β-strands
ElementResiduesLengthSheet
α-helix0-23
α-helix6-105
β-strand16-2386
β-strand26-2946
α-helix30-312
α-helix32-343
β-strand37-3937
β-strand43-5196
β-strand57-6596
α-helix71-8717
β-strand92-9876
α-helix104-1085
β-strand115-11737
α-helix121-1233

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Actin-2Aprotein378Plasmodium berghei (strain Anka)Q4YU79 (AlphaFold model)
GelsolinGprotein127Mus musculusP13020 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>6I4M_1 Actin-2 (chains A)
GPMPEESIALVVDNGSGMVKSGLAGDDAPKCVFPSIIGIPKMPNIMVGMEQKECYVGDEA
QNKRGILTLKYPIEHGIVTNWDDMEKIWRHTFFNELRVSPEEHPVLLTEAPLNPKTNREK
MTQIMFESFDVPAMYVSIQAILSLYASGRTTGIVLDSGDGVTHTVPIYEGYVLPHAINRT
DMAGRDLTYYMMKLFTERGYTFTTTAEREIVRDIKEKLCYIALDYDEELKKSEERTEEVE
EMYELPDGNLITVGSERFRCPEALFNPSLIGRECPGLHITAYQSIMKCDIDIRKELYNNI
VLSGGTTMYNYIGERLTNEMTSLAPPSMKIKVIAPPERKYSVWIGGSILSSLSTFQKMWI
TKEEYDESGPSIVHRKCF
Sequence of entity 2 (G), FASTA
>6I4M_2 Gelsolin (chains G)
GPMVVEHPEFLKAGKEPGLQIWRVEKFDLVPVPPNLYGDFFTGDAYVILKTVQLANGNLQ
YDLHYWLGNECSQDESGAAAIFTVQLDDYLNGRAVQHREVQGFESSTFSGYFKSGLKYKK
GGVASGF

Ligands and cofactors

IDNameFormulaCopies
ADPAdenosine-5'-diphosphateC10 H15 N5 O10 P21
MGMagnesium ionMg1
SCNThiocyanate ionC N S2
CACalcium ionCa2

Primary citation

Atomic view into Plasmodium actin polymerization, ATP hydrolysis, and fragmentation. Kumpula, E.P., Lopez, A.J., Tajedin, L. et al. PLoS Biol (2019) 17:e3000315-e3000315. DOI 10.1371/journal.pbio.3000315 · PubMed

Other PDB entries of the same protein (UniProt Q4YU79 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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