SMTL ID : 4ehq.1

Crystal Structure of Calmodulin Binding Domain of Orai1 in Complex with Ca2+/Calmodulin Displays a Unique Binding Mode

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.90 Å

Oligo State

hetero-1-1-mer

Ligands

4 x CA: CALCIUM ION(Non-covalent)

CA.1: 5 residues within 4Å: Chain A: D.20, D.22, D.24, T.26, E.31 5 PLIP interactions: 5 interactions with chain A Metal complexes: A:D.20, A:D.22, A:D.24, A:T.26, A:E.31 CA.2: 5 residues within 4Å: Chain A: D.129, D.131, D.133, Q.135, E.140 5 PLIP interactions: 4 interactions with chain A, 1 Ligand-Water interactions Metal complexes: A:D.129, A:Q.135, A:E.140, A:E.140, H2O.1 CA.3: 5 residues within 4Å: Chain A: D.93, D.95, N.97, Y.99, E.104 5 PLIP interactions: 4 interactions with chain A, 1 Ligand-Water interactions Metal complexes: A:D.93, A:D.95, A:Y.99, A:E.104, H2O.1 CA.4: 5 residues within 4Å: Chain A: D.56, D.58, N.60, T.62, E.67 5 PLIP interactions: 4 interactions with chain A, 1 Ligand-Water interactions Metal complexes: A:D.56, A:D.58, A:T.62, A:E.67, H2O.3

4 x GBL: GAMMA-BUTYROLACTONE(Non-covalent)

GBL.5: 4 residues within 4Å: Chain A: N.97, G.98, Y.99, N.137 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:N.137 GBL.6: 4 residues within 4Å: Chain A: R.86, F.89, G.98, Y.138 3 PLIP interactions: 3 interactions with chain A Hydrophobic interactions: A:F.89, A:Y.138, A:Y.138 GBL.7: 5 residues within 4Å: Chain A: A.57, D.64, P.66, E.67, T.70 2 PLIP interactions: 2 interactions with chain A Hydrophobic interactions: A:A.57, A:E.67 GBL.8: 7 residues within 4Å: Chain A: M.109, L.112, E.114 Chain B: L.6, K.10, L.11, S.14 4 PLIP interactions: 2 interactions with chain B, 2 interactions with chain A Hydrophobic interactions: B:L.11, A:L.112, A:L.112 Salt bridges: B:K.10

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Liu, Y. et al., Crystal structure of calmodulin binding domain of orai1 in complex with ca2+*calmodulin displays a unique binding mode. J.Biol.Chem. (2012)

Release Date

2012-11-07

Peptides

Calmodulin: A
Calcium release-activated calcium channel protein 1: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
G

Calmodulin

Calcium release-activated calcium channel protein 1

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