Contacts of the helix formed by residues 76 - 82 (chain G) in PDB entry 3PHW
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with GLU 76 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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16G GLN* 4.2 5.2 + - - -
72G TYR* 3.1 19.6 + - - +
73G TYR 3.3 8.2 + - - +
74G GLN 4.9 1.2 - - - +
75G GLU* 1.3 75.8 - - - +
77G PRO* 1.3 80.6 - - - +
78G GLU* 4.4 2.7 + - - +
79G ALA* 3.0 17.8 + - + +
80G ARG* 4.0 2.4 + - - +
103G LEU* 3.8 19.2 - - + +
106G SER* 2.9 24.0 + - - -
107G MET* 3.5 30.0 - - + +
110G LYS* 2.6 36.8 + - - -
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Residues in contact with PRO 77 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13G ILE* 4.3 17.9 - - + -
16G GLN* 5.1 6.1 - - - +
75G GLU 3.2 10.1 - - - +
76G GLU* 1.3 90.3 - - - +
78G GLU* 1.3 62.7 + - - +
80G ARG* 3.0 48.8 + - + +
42H ARG* 4.0 4.7 - - - +
49H GLN* 3.2 31.7 - - + +
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Residues in contact with GLU 78 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16G GLN* 5.7 3.1 + - - +
76G GLU* 3.2 4.2 - - + +
77G PRO* 1.3 80.7 - - - +
79G ALA* 1.3 56.8 + - - +
81G LEU* 2.9 25.0 + - + +
82G VAL* 3.8 4.9 + - - +
102G THR* 2.5 40.7 + - - +
103G LEU* 3.6 25.2 + - + -
106G SER* 5.7 1.9 - - - -
133G PHE* 5.0 2.1 - - - -
42H ARG* 3.7 43.4 + - - +
49H GLN* 3.9 2.8 - - - +
71H LEU 5.3 0.2 - - - +
72H ARG* 3.0 35.6 + - + +
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Residues in contact with ALA 79 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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73G TYR* 3.5 47.0 + - + +
76G GLU* 3.0 21.0 + - + +
78G GLU* 1.3 77.9 - - - +
80G ARG* 1.3 57.3 + - - +
82G VAL* 3.0 5.5 + - - +
83G GLY* 2.8 27.2 + - - -
103G LEU* 4.1 13.5 - - + +
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Residues in contact with ARG 80 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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75G GLU 5.7 0.2 + - - -
76G GLU 4.0 2.2 + - - +
77G PRO* 3.0 46.7 + - + +
79G ALA* 1.3 77.9 - - - +
81G LEU* 1.3 61.4 + - + +
82G VAL 3.5 0.3 + - - -
83G GLY* 3.6 11.0 + - - +
49H GLN* 4.1 28.3 + - - +
50H LEU 5.3 0.9 - - - -
51H GLU* 3.8 43.6 + - - +
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Residues in contact with LEU 81 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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78G GLU* 2.9 14.9 + - + +
80G ARG* 1.3 77.7 - - + +
82G VAL* 1.3 63.3 + - - +
27H LYS* 4.7 10.3 - - - +
39H ASP 3.9 21.5 - - - +
41H GLN 3.6 24.0 - - - +
42H ARG* 3.8 20.2 - - + -
49H GLN* 3.3 26.2 - - - +
72H ARG* 4.1 26.2 + - + -
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Residues in contact with VAL 82 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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97A ASN* 4.9 12.3 + - - +
73G TYR* 3.7 8.7 - - - +
78G GLU 4.5 2.9 - - - +
79G ALA* 3.0 8.5 + - - +
81G LEU* 1.3 82.1 - - - +
83G GLY* 1.3 56.8 + - - +
84G LEU* 2.9 47.7 + - + +
89G TYR* 4.5 11.0 - - + -
103G LEU* 4.0 24.2 - - + -
72H ARG* 4.0 26.9 - - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il