IL.9

INTERLEUKIN-2

PDB

The ligand-free form

1m47_A [Alignment: 1]

The ligand-bound form

1pw6_B[Alignment: 1]

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the structural change


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Ligand

PDB*1

Full name

FRB

SP2456

*1 Ligand name designated by the PDB identifiers.

Segments

Component No.

Fixed*1

Moving*1

Motion type

Ligand binding

Coupled motion type

1

D1(5B-29B,35B-74B,81B-98B,104B-133B)

L2(75B-80B)

Local

Independent

2

D1

L3(30B-34B)

Local

Independent

3

D1

L4(99B-103B)

Local

Independent

*1 The location of the fixed and moving segments indicated by the residue number assigned in the ligand-bound form. The background color of characters indicates the corresponding segment in the structure. The colored segments not described in the Table are: 1) a part of component in which the motion is small (< 1.0 A), or, 2) a part of a protomer of homodimers, for which a corresponding part of the other protomer is shown in the Table.

Displacement and disorder

Component No.

RMSD*1

Displacement*2

Disorder-order transition*3

Disorder residue*4

Helix-Coil*5

1

Yes

+2

2

4.4

-2

3

Yes

+4

*1 The root-mean-square displacement of a component of motion calculated for the domain motions.
*2 The mean displacement of a component of motion calculated for the local motions.
*3 Order-disorder transition: Whether the open form contains the disordered structure.
*4 The number of disordered residues.
*5 The number of residues exhibiting the alpha-helix to coil transition.

Crystal environment

Component No.

Open state*1

Crystal packing*2

1

2

Bound

Coupled

3

*1 Distinction between the open state and the closed state required for examining the influence of the crystal environment.
*2 Crystal packing: Whether the change in the crystal environment is coupled with the structural change.

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