Contacts of the helix formed by residues 166 - 171 (chain G) in PDB entry 1GN2
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 PHE 166 (chain G).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24G ILE* 4.0 10.3 - - - +
161G MET* 3.6 25.4 - - + -
162G TRP 3.2 21.1 - - - -
163G GLU* 3.8 17.0 - - + -
164G HIS 3.3 1.4 + - - -
165G ALA* 1.3 81.7 - - + +
167G TYR* 1.3 80.9 + + - +
168G LEU 3.3 3.1 - - - -
169G GLN* 3.1 3.5 + - - -
170G TYR* 2.8 30.4 + - + -
171G LYS 3.5 22.1 + - - -
172G ASN* 5.0 1.6 - - - -
174G LYS* 3.5 35.9 - - + -
177G PHE* 3.5 42.0 - + + -
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Residues in contact with TYR 167 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
163G GLU* 2.9 25.9 + - + +
164G HIS 4.6 1.2 - - - -
166G PHE* 1.3 86.2 - + - +
168G LEU* 1.3 61.4 + - - +
171G LYS* 2.8 61.5 + - - +
172G ASN* 3.7 4.6 + - - -
24H ILE* 6.1 1.1 - - + -
27H LEU* 3.8 17.8 - - + +
28H HIS 5.1 0.2 + - - -
32H HIS* 2.6 39.6 + + - -
164H HIS* 3.8 33.4 + - + +
167H TYR* 4.7 13.0 - - + -
168H LEU* 3.9 39.5 - - + +
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Residues in contact with LEU 168 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
21G SER* 5.7 1.1 - - - +
23G GLN* 3.9 25.6 - - + +
24G ILE* 4.2 21.9 - - + +
27G LEU* 3.7 29.8 - - + -
164G HIS 5.8 0.2 + - - -
166G PHE 3.3 1.2 - - - -
167G TYR* 1.3 78.7 - - - +
169G GLN* 1.3 59.3 + - - +
171G LYS* 3.8 13.2 + - - -
167H TYR* 4.0 35.6 - - + +
168H LEU* 4.0 30.8 - - + +
171H LYS* 4.3 11.0 - - + -
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Residues in contact with GLN 169 (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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18G PRO 3.0 22.1 + - - -
19G HIS 3.3 2.4 + - - -
20G ILE* 3.7 1.9 - - - -
21G SER* 2.8 39.0 + - - -
24G ILE* 3.8 14.1 - - + +
166G PHE 3.1 3.2 + - - -
168G LEU* 1.3 79.0 - - - +
170G TYR* 1.3 104.8 + - + +
171G LYS* 3.4 14.1 + - - +
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Residues in contact with TYR 170 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
18G PRO 4.3 0.2 + - - -
19G HIS* 2.8 25.7 + - - -
20G ILE* 5.4 0.4 - - - -
24G ILE* 5.7 0.7 - - + -
166G PHE* 2.8 24.0 + - + +
169G GLN* 1.3 107.4 + - + +
171G LYS* 1.3 71.5 + - - +
173G VAL* 3.0 34.4 + - + +
176G ASP* 3.5 34.1 - - + -
177G PHE* 3.7 37.0 - + + -
180G ALA* 3.2 15.1 - - + +
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Residues in contact with LYS 171 (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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166G PHE* 3.5 13.4 + - - -
167G TYR* 2.8 45.7 + - + +
168G LEU 3.8 20.3 + - - -
169G GLN 3.4 16.0 + - - -
170G TYR* 1.3 80.8 - - - +
172G ASN* 1.3 69.6 + - - +
173G VAL* 3.5 1.5 + - + -
23H GLN* 4.1 23.1 - - - +
27H LEU* 3.8 26.7 - - + -
168H LEU* 4.3 12.3 - - + -
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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