Contacts of the helix formed by residues 171 - 180 (chain A) in PDB entry 4KZ0
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 ASP 171 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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170A ASP* 1.3 74.5 - - - +
172A GLU* 1.4 58.1 + - - +
173A LEU 3.6 1.8 - - - -
174A GLU* 4.1 15.2 - - + +
175A PHE* 2.9 32.8 + - - +
471A HIS* 3.9 3.9 + - - -
472A ARG* 2.7 46.3 + - - -
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Residues in contact with GLU 172 (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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170A ASP* 3.3 27.4 + - - +
171A ASP* 1.4 74.3 - - - +
173A LEU* 1.3 57.4 + - + +
175A PHE* 3.4 3.8 + - + +
176A THR* 2.6 40.0 + - - +
467A LEU* 4.4 8.4 - - - +
471A HIS* 3.4 31.3 - - + +
476A ARG* 5.4 1.8 + - - -
504A SER* 4.3 7.8 + - - -
672A TYR* 3.4 25.5 - - - +
673A HIS* 3.2 47.9 + - + +
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Residues in contact with LEU 173 (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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160A TYR* 6.1 0.4 - - + -
162A VAL 5.8 3.6 - - - +
164A ASP 5.5 4.7 - - - +
168A VAL* 3.8 23.6 - - + +
170A ASP 5.4 0.2 + - - -
171A ASP 3.6 0.2 - - - -
172A GLU* 1.3 75.6 - - + +
174A GLU* 1.3 52.1 + - - +
176A THR* 3.1 5.9 + - - -
177A ARG* 2.8 39.2 + - - +
673A HIS* 3.5 29.2 - - + +
711A GLN* 3.4 61.7 - - + +
712A ARG* 3.7 6.7 - - - +
715A VAL* 3.9 16.5 - - + +
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Residues in contact with GLU 174 (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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162A VAL 4.5 5.0 - - - +
163A THR* 5.1 1.9 - - - -
165A VAL* 4.8 17.0 - - + +
171A ASP* 3.7 18.3 + - + +
172A GLU 3.4 0.2 - - - -
173A LEU* 1.3 73.3 - - - +
175A PHE* 1.3 64.4 + - - +
176A THR 3.1 1.6 - - - -
177A ARG* 2.9 42.2 + - - +
178A ARG* 3.1 26.4 + - + +
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Residues in contact with PHE 175 (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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171A ASP* 2.9 25.5 + - - +
172A GLU 3.5 4.0 - - - +
174A GLU* 1.3 76.8 - - - +
176A THR* 1.4 60.0 + - - +
178A ARG* 3.8 5.4 - - - +
179A GLY* 2.8 29.0 + - - -
471A HIS* 3.4 47.3 - + + +
472A ARG* 3.4 38.1 - - + +
674A ASP* 4.7 15.3 - - + -
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Residues in contact with THR 176 (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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172A GLU* 2.6 23.8 + - - +
173A LEU 3.5 5.4 - - - -
174A GLU 3.1 0.4 - - - -
175A PHE* 1.4 78.2 - - - +
177A ARG* 1.4 59.0 + - - +
178A ARG 3.3 0.2 - - - -
179A GLY* 3.7 2.2 - - - +
180A LEU* 2.9 45.0 + - + +
673A HIS* 3.4 25.2 - - + +
674A ASP* 3.6 38.0 + - + +
715A VAL* 3.7 18.4 - - + -
716A ILE* 6.1 0.4 - - + -
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Residues in contact with ARG 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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151A GLN* 3.5 5.5 + - - -
162A VAL* 3.5 15.8 - - - +
163A THR* 3.3 38.4 - - - +
173A LEU* 2.8 23.7 + - - +
174A GLU* 2.9 44.2 + - - +
176A THR* 1.4 71.5 - - - +
178A ARG* 1.4 62.0 + - - +
180A LEU* 3.5 9.2 + - - +
181A VAL* 3.4 18.2 + - - +
184A ARG* 5.5 0.3 + - - -
715A VAL* 3.9 22.2 - - + +
718A GLU* 2.8 43.2 + - - +
719A ALA* 5.7 1.8 - - - +
722A ARG* 4.5 3.2 - - - +
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Residues in contact with ARG 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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174A GLU* 3.1 15.6 + - + +
175A PHE* 3.9 5.4 - - - +
177A ARG* 1.4 77.2 - - - +
179A GLY* 1.3 62.9 + - - +
181A VAL* 3.3 26.3 + - - +
182A THR* 4.7 1.2 + - - -
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Residues in contact with GLY 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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175A PHE* 2.8 23.8 + - - -
176A THR 3.3 2.0 + - - -
178A ARG* 1.3 72.9 - - - +
180A LEU* 1.3 60.1 + - - +
181A VAL 3.6 0.7 + - - -
182A THR* 4.1 4.9 + - - -
183A PRO* 3.5 9.0 - - - +
674A ASP* 4.1 11.2 - - - -
679A ARG* 3.1 22.5 + - - -
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Residues in contact with LEU 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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176A THR* 2.9 40.4 + - + +
177A ARG* 3.9 5.4 - - - +
178A ARG 3.3 0.2 - - - -
179A GLY* 1.3 73.6 - - - +
181A VAL* 1.4 62.0 + - - +
182A THR 3.3 1.6 - - - -
183A PRO* 3.2 7.0 - - + +
184A ARG* 3.1 26.1 + - - +
673A HIS 5.7 0.7 - - - +
674A ASP* 3.8 11.9 - - - +
678A ALA* 5.2 5.4 - - + -
679A ARG* 3.7 35.0 - - + +
682A LEU* 4.0 14.2 - - + +
715A VAL* 3.9 16.2 - - + +
716A ILE* 4.6 13.0 - - + -
719A ALA* 4.1 26.0 - - + -
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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