9T7I: Myosin-A

Plasmodium falciparum Myosin A full-length, post-rigor state, complexed to the inhibitor KNX-115 and ATP-gamma-S. Determined by X-ray diffraction at 2.35 Å resolution. Released 5 Aug 2026.

Method
X-ray diffraction
Resolution
2.35 Å
Organism
Plasmodium falciparum
Chains
3
Atoms
8,898
Mol. weight
132.67 kDa
Ligands
A1JT8, MG, AGS
Released
5 Aug 2026

Explore 9T7I in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9T7I contains 61 α-helices and 37 β-strands across 3 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: 44 helices, 29 β-strands

ElementResiduesLengthSheet
α-helix11-144
β-strand2411
α-helix291
β-strand3011
α-helix311
β-strand35-3842
α-helix42-465
β-strand53-5752
β-strand66-7272
β-strand80-8232
α-helix84-863
β-strand87-8822
α-helix96-983
β-strand10113
α-helix102-1043
α-helix110-12213
β-strand127-13043
β-strand133-13753
α-helix148-1569
α-helix160-1623
α-helix164-1652
α-helix167-18115
β-strand185-19173
α-helix197-20812
α-helix218-23518
β-strand236-23724
β-strand245-24624
β-strand249-25683
β-strand262-27093
α-helix274-2774
β-strand28714
α-helix288-2969
α-helix299-3057
α-helix328-34114
α-helix346-36318
β-strand367-37045
β-strand378-38145
α-helix383-3853
α-helix386-39510
α-helix400-4089
β-strand409-41466
β-strand417-42266
α-helix425-45531
β-strand465-47173
β-strand47917
α-helix481-51232
α-helix525-5328
α-helix538-54710
α-helix553-56311
β-strand570-57237
β-strand580-58567
β-strand588-59367
α-helix597-6015
α-helix608-6147
α-helix619-6246
α-helix628-6314
α-helix637-6393
α-helix641-65717
β-strand660-66783
α-helix680-68910
α-helix692-7009
β-strand705-70848
α-helix709-7157
α-helix717-7204
α-helix721-7255
α-helix731-74212
α-helix746-7483
β-strand749-75138
β-strand755-75848
α-helix760-77213
α-helix775-7773
α-helix778-79922
α-helix801-81717
Chain B: 10 helices, 6 β-strands
ElementResiduesLengthSheet
α-helix30-389
β-strand4019
β-strand4319
β-strand44-45210
α-helix46-5510
α-helix62-7211
β-strand75-76210
α-helix78-8710
α-helix95-984
α-helix100-1045
β-strand112-114311
α-helix115-12410
α-helix128-1303
α-helix131-1399
β-strand146-148311
α-helix149-1579
Chain E: 7 helices, 2 β-strands
ElementResiduesLengthSheet
α-helix6-1611
β-strand22-23212
α-helix25-3410
α-helix41-455
β-strand51-52212
α-helix53-6311
α-helix88-969
α-helix103-11210
α-helix123-13210

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Myosin-AAprotein818Plasmodium falciparumQ8IDR3 (AlphaFold model)
Myosin A tail domain interacting proteinBprotein204Plasmodium falciparumQ8I4W8 (AlphaFold model)
Myosin essential light chain ELCEprotein134Plasmodium falciparumQ8IJM4 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>9T7I_1 Myosin-A (chains A)
MAVTNEEIKTASKIVRRVSNVEAFDKSGSVFKGYQIWTDISPTIENDPNIMFVKCVVQQG
SKKEKLTVVQIDPPGTGTPYDIDPTHAWNCNSQVDPMSFGDIGLLNHTNIPCVLDFLKHR
YLKNQIYTTAVPLIVAINPYKDLGNTTNEWIRRYRDTADHTKLPPHVFTCAREALSNLHG
VNKSQTIIVSGESGAGKTEATKQIMRYFASSKSGNMDLRIQTAIMAANPVLEAFGNAKTI
RNNNSSRFGRFMQLVISHEGGIRYGSVVAFLLEKSRIITQDDNERSYHIFYQFLKGANST
MKSKFGLKGVTEYKLLNPNSTEVSGVDDVKDFEEVIESLKNMELSESDIEVIFSIVAGIL
TLGNVRLIEKQEAGLSDAAAIMDEDMGVFNKACELMYLDPELIKREILIKVTVAGGTKIE
GRWNKNDAEVLKSSLCKAMYEKLFLWIIRHLNSRIEPEGGFKTFMGMLDIFGFEVFKNNS
LEQLFINITNEMLQKNFVDIVFERESKLYKDEGISTAELKYTSNKEVINVLCEKGKSVLS
YLEDQCLAPGGTDEKFVSSCATNLKENNKFTPAKVASNKNFIIQHTIGPIQYCAESFLLK
NKDVLRGDLVEVIKDSPNPIVQQLFEGQVIEKGKIAKGSLIGSQFLNQLTSLMNLINSTE
PHFIRCIKPNENKKPLEWCEPKILIQLHALSILEALVLRQLGYSYRRTFEEFLYQYKFVD
IAAAEDSSVENQNKCVNILKLSGLSESMYKIGKSMVFLKQEGAKILTKIQREKLVEWENC
VSVIEAAILKHKYKQKVNKNIPSLLRVQAHIRKKMVAQ
Sequence of entity 2 (B), FASTA
>9T7I_2 Myosin A tail domain interacting protein (chains B)
MKQECNVCYFNLPDPESTLGPYDNELNYFTWGPGFEYEPEPQRKPLSIEESFENSEESEE
SVADIQQLEEKVDESDVRIYFNEKSSGGKISIDNASYNARKLGLAPSSIDEKKIKELYGD
NLTYEQYLEYLSICVHDKDNVEELIKMFAHFDNNCTGYLTKSQMKNILTTWGDALTDQEA
IDALNAFSSEDNIDYKLFCEDILQ
Sequence of entity 3 (E), FASTA
>9T7I_3 Myosin essential light chain ELC (chains E)
MASDMEEKFREAFILFSSCSDHIEMYKFFELMNSFGIILTNDEKAALPNDINMDYWLNFA
KKHYNYEQPFKHINNVNEQNTNVQIKIDNFLGIMKALDTRLTESDLNILLQITNPENKST
LNLKTVSQKLTESI

Ligands and cofactors

IDNameFormulaCopies
A1JT84-methoxy-~{N}-[(3-thiophen-2-yl-1~{H}-pyrazol-4-yl)methyl]benzenesulfonamideC15 H15 N3 O3 S21
MGMagnesium ionMg1
AGSPhosphothiophosphoric acid-adenylate esterC10 H16 N5 O12 P3 S1

Water and common crystallization additives (GOL) are not listed.

Primary citation

Plasmodium falciparum Myosin A full-length, post-rigor state, complexed to the inhibitor KNX-115 and ATP-gamma-S. Moussaoui, D., Spudich, J.A., Trybus, K.M. et al. To be published.

Other PDB entries of the same protein (UniProt Q8IDR3 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

About this viewer

MolViewer shows 9T7I directly in your browser with nothing to install. Switch between cartoon, ball-and-stick, spacefill and surface views, color by chain, secondary structure or B-factor, measure distances, angles and dihedrals, and share or embed the view.