SMTL ID : 1s6b.1

X-ray Crystal Structure of a Complex Formed Between Two Homologous Isoforms of Phospholipase A2 from Naja naja sagittifera: Principle of Molecular Association and Inactivation

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.60 Å

Oligo State

hetero-1-1-mer

Ligands

2 x CA: CALCIUM ION(Non-covalent)

CA.1: 4 residues within 4Å: Chain A: D.23, N.111 Chain B: D.23, N.111 5 PLIP interactions: 2 interactions with chain A, 1 interactions with chain B, 2 Ligand-Water interactions Metal complexes: A:D.23, A:D.23, B:D.23, H2O.2, H2O.11 CA.3: 5 residues within 4Å: Chain B: Y.27, G.29, G.31, D.48 Ligands: PO4.4 5 PLIP interactions: 4 interactions with chain B, 1 Ligand-Water interactions Metal complexes: B:Y.27, B:G.29, B:G.31, B:D.48, H2O.7

2 x PO4: PHOSPHATE ION(Non-functional Binders)

PO4.2: 3 residues within 4Å: Chain A: N.1, Y.3, Q.64 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:T.66 Water bridges: A:Y.3, A:Q.64 PO4.4: 8 residues within 4Å: Chain B: F.5, Y.27, C.28, G.29, C.44, H.47, D.48 Ligands: CA.3 9 PLIP interactions: 9 interactions with chain B Hydrogen bonds: B:Y.27, B:G.29, B:D.48 Water bridges: B:R.63, B:R.63, B:R.63, B:R.63, B:R.63 Salt bridges: B:H.47

2 x ACY: ACETIC ACID(Non-functional Binders)

ACY.5: 1 residues within 4Å: Chain B: G.31 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:G.31 ACY.6: 1 residues within 4Å: Chain B: F.64 No protein-ligand interaction detected (PLIP)

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Jabeen, T. et al., Crystal structure of a calcium-induced dimer of two isoforms of cobra phospholipase A2 at 1.6 A resolution. Proteins (2005)

Release Date

2004-02-10

Peptides

Phospholipase A2 isoform 1: A
Phospholipase A2 isoform 2: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Phospholipase A2 isoform 1

Phospholipase A2 isoform 2

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