SMTL ID : 2a5f.1

Cholera toxin A1 subunit bound to its substrate, NAD+, and its human protein activator, ARF6

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.02 Å

Oligo State

hetero-1-1-mer

Ligands

1 x MG: MAGNESIUM ION(Non-covalent)

MG.1: 4 residues within 4Å: Chain A: T.27, T.44, D.63 Ligands: GTP.2 4 PLIP interactions: 2 interactions with chain A, 2 Ligand-Water interactions Metal complexes: A:T.27, A:T.44, H2O.1, H2O.1

1 x GTP: GUANOSINE-5'-TRIPHOSPHATE(Non-covalent)

GTP.2: 21 residues within 4Å: Chain A: L.21, D.22, A.23, A.24, G.25, K.26, T.27, T.28, T.41, P.43, T.44, G.65, G.66, N.122, K.123, D.125, L.126, C.155, A.156, T.157 Ligands: MG.1 23 PLIP interactions: 23 interactions with chain A Hydrogen bonds: A:A.23, A:A.24, A:G.25, A:K.26, A:T.27, A:T.28, A:T.28, A:T.41, A:T.44, A:G.66, A:N.122, A:K.123, A:K.123, A:A.156, A:T.157 Water bridges: A:T.27, A:T.41, A:T.44, A:T.44, A:Q.67 Salt bridges: A:K.26, A:K.26, A:D.125

1 x NA: SODIUM ION(Non-functional Binders)

NA.3: 3 residues within 4Å: Chain B: T.91, Y.151, L.154 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:T.91, B:T.91, B:L.154 Water bridges: B:D.4

1 x NAD: NICOTINAMIDE-ADENINE-DINUCLEOTIDE(Non-covalent)

NAD.4: 19 residues within 4Å: Chain B: Y.7, R.8, A.9, D.10, S.11, R.12, M.24, P.25, R.26, V.54, S.62, T.63, S.64, V.73, I.77, L.78, D.111, D.113 Ligands: GOL.5 23 PLIP interactions: 23 interactions with chain B Hydrophobic interactions: B:V.73 Hydrogen bonds: B:A.9, B:A.9, B:S.11, B:S.11, B:R.12, B:M.24, B:R.26, B:S.62, B:D.113 Water bridges: B:S.11, B:R.12, B:R.26, B:H.45, B:D.111, B:D.111, B:D.113 Salt bridges: B:R.8, B:R.8, B:R.26 pi-Cation interactions: B:R.12, B:R.12, B:R.26

1 x GOL: GLYCEROL(Non-functional Binders)

GOL.5: 8 residues within 4Å: Chain B: R.8, H.45, V.54, D.58, Y.60, V.61, S.62 Ligands: NAD.4 5 PLIP interactions: 5 interactions with chain B Hydrogen bonds: B:R.8, B:R.8, B:H.45, B:S.62, B:S.62

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

O'Neal, C.J. et al., Structural basis for the activation of cholera toxin by human ARF6-GTP. Science (2005)

Release Date

2005-08-16

Peptides

ADP-ribosylation factor 6: A
Cholera enterotoxin, A chain: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

ADP-ribosylation factor 6

Cholera enterotoxin, A chain

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