3Q4Y: Group I phospholipase A2

Crystal structure of group I phospholipase A2 at 2.3 A resolution in 40% ethanol revealed the critical elements of hydrophobicity of the substrate-binding site. Determined by X-ray diffraction at 2.3 Å resolution. Released 26 Jan 2011.

Method
X-ray diffraction
Resolution
2.3 Å
Organism
Naja sagittifera
Chains
1
Atoms
997
Mol. weight
13.21 kDa
Ligands
CA, EOH
Released
26 Jan 2011

Explore 3Q4Y in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

3Q4Y contains 7 α-helices and 5 β-strands across 1 chain. 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: 7 helices, 5 β-strands

ElementResiduesLengthSheet
α-helix2-1211
α-helix19-213
β-strand24-2521
β-strand29-3021
α-helix40-5516
β-strand70-7342
β-strand76-7942
α-helix85-10319
α-helix105-1062
α-helix108-1103
β-strand11111
α-helix115-1184

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Phospholipase A2 isoform 3Aprotein119Naja sagittiferaP60045 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>3Q4Y_1 Phospholipase A2 isoform 3 (chains A)
NLYQFKNMIQCTVPSRSWADFADYGCYCGKGGSGTPVDDLDRCCQTHDNCYNEAENISGC
RPYFKTYSYECTQGTLTCKGDNNACAASVCDCDRLAAICFAGAPYNDANYNIDLKARCN

Ligands and cofactors

IDNameFormulaCopies
CACalcium ionCa1
EOHEthanolC2 H6 O1

Primary citation

Crystal structure of group I phospholipase A2 at 2.3 A resolution in 40% ethanol revealed the critical elements of hydrophobicity of the substrate-binding site. Shukla, P.K., Kaushik, S., Sinha, M. et al. To be published.

Other PDB entries of the same protein (UniProt P60045 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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