Vitamin B12 transporter BtuCD in a nucleotide-bound outward facing state
Organism: Escherichia coli
Model: Experimental
Representation: Atomistic
Type: α-helical
Pfam Acc: PF01032
PDB ID: 4R9U
Membrane assignment:
Output PDB file Download
Hydrophobic thickness = 29.1 Å
Number of TM segments = 15
Sequence positions:
A: 15-33|52-78|84-108|114-134|146-164|175-204|277-295
B: 16-34|56-78|84-103|117-138|144-162|190-206|276-297|303-322
Tilt angles:
A - Segment: 15-33 - Tilt: 8.0°
A - Segment: 52-78 - Tilt: 43.8°
A - Segment: 84-108 - Tilt: 46.3°
A - Segment: 114-134 - Tilt: 29.0°
A - Segment: 146-164 - Tilt: 11.9°
A - Segment: 175-204 - Tilt: 27.3°
A - Segment: 277-295 - Tilt: 10.5°
B - Segment: 16-34 - Tilt: 14.7°
B - Segment: 56-78 - Tilt: 38.6°
B - Segment: 84-103 - Tilt: 31.9°
B - Segment: 117-138 - Tilt: 28.1°
B - Segment: 144-162 - Tilt: 6.3°
B - Segment: 190-206 - Tilt: 4.6°
B - Segment: 276-297 - Tilt: 34.0°
B - Segment: 303-322 - Tilt: 23.9°
Structural assessment:
MAIDEN score = -155.4405
The MAIDEN score is aimed at assessing the relative quality, i.e. ranking several models (the lower the score, the better the model). It comes here with a color code (red > yellow > green > blue), which is derived from a z-score calculation and indicates the absolute quality.
Scores for all residue pairs Download
[creation date: Sep-08-2016]