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PDBsum entry 1k7b
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Membrane protein
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PDB id
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1k7b
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Contents |
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* Residue conservation analysis
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Generate full PROCHECK analyses
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PROCHECK summary for 1k7b
Ramachandran plot
PROCHECK statistics
1. Ramachandran Plot statistics
No. of
residues %-tage
------ ------
Most favoured regions [A,B,L] 18 64.3%**
Additional allowed regions [a,b,l,p] 10 35.7%
Generously allowed regions [~a,~b,~l,~p] 0 0.0%
Disallowed regions [XX] 0 0.0%
---- ------
Non-glycine and non-proline residues 28 100.0%
End-residues (excl. Gly and Pro) 1
Glycine residues 7
Proline residues 6
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Total number of residues 42
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 -0.88*
Chi1-chi2 distribution -0.78*
Chi1 only -0.37
Chi3 & chi4 0.40
Omega -1.32**
-0.84*
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Main-chain covalent forces:-
Main-chain bond lengths 0.50
Main-chain bond angles -0.87*
-0.29
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OVERALL AVERAGE -0.58*
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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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