Contacts of the helix formed by residues 176 - 184 (chain A) in PDB entry 4HH3
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 ASN 176 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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155A LEU* 3.0 37.8 + - + +
156A ASP* 4.2 9.9 - - - +
158A SER 3.3 11.1 + - - -
160A ASP 3.0 24.4 + - - -
161A PRO* 3.6 0.5 - - - +
162A MET* 3.1 31.2 + - - +
175A LEU* 1.3 82.5 - - - +
177A SER* 1.3 68.1 + - - +
178A ALA* 4.0 5.4 - - - +
179A ALA* 3.1 14.0 + - - +
180A GLY* 3.1 16.5 + - - -
187A ARG* 5.0 1.3 - - - +
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Residues in contact with SER 177 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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156A ASP* 4.4 12.6 + - - +
176A ASN* 1.3 75.5 - - - +
178A ALA* 1.3 63.8 + - - +
180A GLY* 3.1 3.1 + - - +
181A LEU* 2.9 35.7 + - - +
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Residues in contact with ALA 178 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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158A SER 4.2 12.1 - - - +
159A ARG* 3.9 18.4 - - - +
161A PRO* 3.8 19.3 - - + +
176A ASN* 3.2 8.6 - - - +
177A SER* 1.3 83.3 + - - +
179A ALA* 1.3 59.7 + - - +
181A LEU* 3.5 10.8 + - - +
182A LEU* 3.4 23.4 + - - +
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Residues in contact with ALA 179 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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161A PRO* 3.6 11.8 - - + +
162A MET 3.5 32.5 - - - +
163A VAL* 3.6 18.8 - - + -
175A LEU* 4.5 2.0 - - + -
176A ASN* 3.1 13.8 + - - +
178A ALA* 1.3 73.8 - - - +
180A GLY* 1.3 66.6 + - - +
182A LEU* 3.2 4.9 + - - +
183A LEU* 3.0 28.9 + - - +
253A ILE* 4.7 4.9 - - + -
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Residues in contact with GLY 180 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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175A LEU* 4.0 4.4 - - - +
176A ASN 3.1 12.8 + - - -
177A SER* 3.1 5.3 + - - -
179A ALA* 1.3 75.9 - - - +
181A LEU* 1.3 57.4 + - - +
183A LEU 3.3 0.5 + - - -
184A GLY* 2.8 26.5 + - - -
185A GLY 3.1 27.1 + - - +
186A VAL 5.9 0.2 - - - -
190A LEU* 4.0 14.8 - - - -
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Residues in contact with LEU 181 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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177A SER* 2.9 27.3 + - - +
178A ALA* 3.7 8.5 - - - +
179A ALA 3.2 0.2 - - - -
180A GLY* 1.3 78.2 - - - +
182A LEU* 1.3 62.7 + - + +
184A GLY* 3.5 9.7 + - - -
230A SER* 5.0 2.4 - - - -
232A LYS* 5.8 0.2 - - - +
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Residues in contact with LEU 182 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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161A PRO* 3.7 17.9 - - + -
178A ALA 3.4 8.2 + - - +
179A ALA* 3.2 9.0 + - - +
181A LEU* 1.3 79.5 - - + +
183A LEU* 1.3 58.6 + - + +
230A SER* 2.8 22.7 + - - -
232A LYS* 3.6 36.3 - - + +
234A LEU* 4.0 19.5 - - + +
253A ILE* 3.6 39.5 - - + +
254A ASP 4.2 0.4 - - - -
255A PRO* 4.1 20.9 - - + -
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Residues in contact with LEU 183 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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163A VAL* 4.3 23.3 - - + -
172A ILE* 5.1 6.5 - - + -
175A LEU* 4.9 1.6 - - + -
179A ALA 3.0 21.2 + - - +
180A GLY 3.9 2.7 - - - +
182A LEU* 1.3 77.6 - - + +
184A GLY* 1.3 59.4 + - - +
190A LEU* 4.1 32.1 - - + -
195A ILE* 5.6 1.6 - - + -
198A GLU* 4.9 13.4 - - + +
199A PHE* 3.7 34.3 - - + -
227A ALA* 3.9 10.2 - - + +
229A ARG* 3.2 9.4 + - - +
230A SER* 3.0 22.1 + - - -
234A LEU* 4.0 12.8 - - + -
253A ILE* 4.3 9.0 - - + -
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Residues in contact with GLY 184 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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180A GLY 2.8 7.2 + - - -
181A LEU* 3.5 8.5 + - - -
182A LEU 3.3 2.0 - - - -
183A LEU* 1.3 80.3 - - - +
185A GLY* 1.3 56.6 + - - +
229A ARG* 3.6 16.5 + - - +
230A SER* 4.0 13.0 - - - -
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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