Contacts of the strand formed by residues 171 - 175 (chain A) in PDB entry 1HPL
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 ARG 171 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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71A ARG* 4.0 7.7 - - - +
146A VAL 3.2 6.5 + - - -
147A HIS* 3.3 42.4 + - + +
148A ILE 2.8 24.6 + - - -
169A VAL* 3.6 3.6 - - - +
170A GLY* 1.4 76.2 - - - +
172A ILE* 1.3 73.1 + - - +
173A THR* 3.4 5.3 + - - -
196A ALA* 4.1 1.6 - - - -
198A PHE* 3.3 28.3 - - + +
200A ASP* 3.0 37.7 + - - -
270A TYR* 4.0 3.0 + - - -
308A GLY 3.3 15.0 + - - -
309A HIS 2.7 27.4 + - - -
311A ALA* 4.1 5.3 - - - +
312A ASP* 3.8 25.7 + - + +
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Residues in contact with ILE 172 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
148A ILE* 3.1 12.3 - - + +
155A SER 5.0 0.2 - - - +
158A ALA* 3.4 42.4 - - + +
159A GLY* 4.2 0.7 - - - -
162A GLY* 4.1 5.4 - - - -
169A VAL* 4.2 7.2 - - + -
171A ARG* 1.3 80.0 - - - +
173A THR* 1.4 70.4 + - - +
174A GLY* 4.2 0.7 - - - +
191A LEU* 3.8 22.0 - - + -
195A ASP* 3.7 40.4 - - + +
196A ALA* 3.7 10.3 - - + +
198A PHE 3.0 5.9 + - - +
199A VAL* 3.2 25.0 - - + +
200A ASP* 3.2 12.8 + - - +
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Residues in contact with THR 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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147A HIS* 2.9 23.0 + - - -
148A ILE 2.9 7.5 + - - +
149A ILE* 4.2 10.2 - - + +
150A GLY* 3.0 27.2 + - - +
155A SER* 4.9 0.2 - - - -
171A ARG* 3.4 4.5 + - - -
172A ILE* 1.4 74.6 - - - +
174A GLY* 1.3 61.4 + - - +
175A LEU* 3.6 27.4 - - + -
200A ASP* 2.9 34.8 + - - +
202A ILE* 4.6 5.2 - - + -
270A TYR* 3.9 13.8 - - + -
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Residues in contact with GLY 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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150A GLY 3.7 3.8 - - - -
155A SER* 3.9 14.1 - - - -
172A ILE* 4.2 1.0 - - - -
173A THR* 1.3 73.1 - - - +
175A LEU* 1.3 60.8 + - - +
176A ASP 3.6 2.1 + - - -
177A PRO* 4.1 5.8 - - - -
191A LEU* 4.0 18.7 - - - +
199A VAL* 5.3 0.2 - - - +
200A ASP 2.9 10.7 + - - +
201A VAL* 3.3 6.1 - - - +
202A ILE 2.9 25.8 + - - -
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Residues in contact with LEU 175 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
85A TRP* 4.9 1.1 - - + -
89A MET* 4.4 3.8 - - + -
149A ILE* 3.8 22.9 - - + -
150A GLY 2.9 15.4 + - - +
151A HIS* 3.0 16.4 - - + -
152A SER 2.8 31.7 + - - -
155A SER* 4.3 0.2 - - - -
173A THR* 3.6 25.4 - - + -
174A GLY* 1.3 68.6 - - - -
176A ASP* 1.3 60.3 + - - +
177A PRO 3.5 0.2 - - - -
202A ILE* 3.6 25.8 - - + -
266A SER* 3.5 21.1 - - - +
267A TYR* 3.7 28.9 - - + -
270A TYR* 4.0 11.0 - - + -
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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