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PDBsum entry 9n4q
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Membrane protein
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PDB id
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9n4q
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Generate full PROCHECK analyses
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PROCHECK summary for 9n4q
Ramachandran plot
PROCHECK statistics
1. Ramachandran Plot statistics
No. of
residues %-tage
------ ------
Most favoured regions [A,B,L] 2776 78.3%**
Additional allowed regions [a,b,l,p] 754 21.3%
Generously allowed regions [~a,~b,~l,~p] 16 0.5%
Disallowed regions [XX] 0 0.0%
---- ------
Non-glycine and non-proline residues 3546 100.0%
End-residues (excl. Gly and Pro) 12
Glycine residues 270
Proline residues 170
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Total number of residues 3998
Based on an analysis of 118 structures of resolution of at least 2.0 Angstroms and R-factor no greater than 20.0 a good
quality model would be expected to have over 90% in the most favoured regions [A,B,L].
2. G-Factors
Average
Parameter Score Score
--------- ----- -----
Dihedral angles:-
Phi-psi distribution -0.67*
Chi1-chi2 distribution 0.23
Chi1 only 0.22
Chi3 & chi4 0.59
Omega -0.55*
-0.26
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Main-chain covalent forces:-
Main-chain bond lengths 0.66
Main-chain bond angles 0.42
0.52
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OVERALL AVERAGE 0.05
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G-factors provide a measure of how unusual, or out-of-the-ordinary, a property is.
Values below -0.5* - unusual
Values below -1.0** - highly unusual
Important note: The main-chain
bond-lengths and bond angles are compared with
the Engh & Huber (1991) ideal values derived
from small-molecule data. Therefore, structures
refined using different restraints may show
apparently large deviations from normality.
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