Contacts of the strand formed by residues 218 - 222 (chain A) in PDB entry 3PE7
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 MET 218 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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205A PHE 4.0 3.4 - - - -
206A CYS* 4.8 0.4 - - - +
216A ALA* 3.5 2.0 - - - +
217A ARG* 1.3 87.3 - - + +
219A TRP* 1.3 67.1 + - - +
230A LYS* 3.5 6.4 - - - +
231A VAL* 3.0 39.4 + - + +
232A LYS* 4.5 4.6 + - + +
234A HIS* 4.8 1.2 + - - -
240A CYS* 4.5 9.6 - - + -
243A GLU* 3.3 35.2 - - + +
252A LEU* 2.8 42.8 - - + -
254A TYR* 3.5 46.2 - - + -
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Residues in contact with TRP 219 (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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204A ALA* 3.3 6.9 - - - +
205A PHE* 3.0 56.0 + + + +
206A CYS 4.6 0.2 - - - -
207A HIS* 3.3 40.8 - + - -
215A ASP* 3.7 12.6 - - - -
216A ALA* 2.9 26.8 + - + -
217A ARG 3.4 11.4 - - - -
218A MET* 1.3 79.3 - - - +
220A LEU* 1.3 65.4 + - - +
228A MET* 4.1 28.5 - - + -
229A ARG* 3.5 13.0 - - - -
230A LYS* 3.5 52.9 - - + -
231A VAL* 4.1 3.1 - - - +
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Residues in contact with LEU 220 (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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202A THR* 4.0 11.9 - - + -
203A VAL 3.3 3.4 - - - +
204A ALA* 3.7 22.2 - - + -
205A PHE* 4.1 2.2 - - - -
219A TRP* 1.3 83.4 - - - +
221A ILE* 1.3 63.0 + - - +
228A MET* 3.4 4.3 - - - +
229A ARG* 2.8 69.0 + - + +
231A VAL* 3.8 16.8 - - + -
245A TRP* 3.9 19.1 - - + -
252A LEU* 4.8 2.7 - - + -
271A PRO* 4.1 14.6 - - + +
274A LEU* 4.0 23.1 - - + -
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Residues in contact with ILE 221 (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 LEU* 4.3 4.9 - - + -
183A ILE* 4.1 11.9 - - + +
184A LEU* 4.2 30.3 - - + -
202A THR* 3.8 1.9 - - - -
203A VAL* 2.8 44.6 + - + +
205A PHE* 3.8 18.4 - - + -
220A LEU* 1.3 77.4 - - - +
222A ASN* 1.3 73.3 + - - +
225A GLY* 3.4 25.1 - - - +
226A THR 3.5 12.3 - - - +
227A ASN 4.0 1.6 - - - -
228A MET* 3.8 21.8 - - + -
229A ARG* 3.7 9.4 + - - +
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Residues in contact with ASN 222 (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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183A ILE* 3.8 1.2 - - - +
201A SER* 3.1 15.5 - - - +
202A THR* 5.2 0.9 + - - -
203A VAL* 5.1 0.2 - - - -
221A ILE* 1.3 81.8 - - - +
223A GLU* 1.3 61.8 + - - +
224A ASP* 3.1 14.7 + - - +
225A GLY* 2.9 21.5 + - - -
226A THR* 2.9 34.8 + - - +
227A ASN* 3.4 16.9 - - - +
229A ARG* 3.2 20.5 + - - +
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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