Contacts of the strand formed by residues 218 - 222 (chain A) in PDB entry 1II7
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 SER 218 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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199A TYR 2.9 26.9 + - - -
200A LEU* 3.4 25.3 + - - +
201A TYR 4.0 1.3 - - - -
202A TYR* 4.1 4.5 - - - -
214A SER* 3.2 7.1 - - - -
215A TYR 3.0 33.2 + - - +
216A SER 3.3 3.3 + - - -
217A GLY* 1.3 81.2 + - - +
219A PRO* 1.3 70.3 - - - +
220A VAL* 4.0 0.7 - - - +
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Residues in contact with PRO 219 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
200A LEU 3.7 12.6 - - - +
201A TYR* 3.8 18.4 - - + -
202A TYR* 2.9 28.9 + - - +
212A GLU* 4.3 7.4 - - - +
213A THR 3.7 6.3 - - - +
214A SER* 4.4 1.1 - - - -
217A GLY 4.8 0.4 - - - +
218A SER* 1.3 89.8 - - - +
220A VAL* 1.3 59.9 + - - +
221A VAL* 4.0 4.5 - - + -
261A PHE* 3.3 24.7 - - + +
263A PRO* 3.7 20.0 - - + -
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Residues in contact with VAL 220 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
176A VAL* 5.6 0.2 - - + -
179A VAL* 5.8 1.6 - - + -
192A LEU* 4.1 17.9 - - + -
195A LEU* 4.8 1.6 - - + -
202A TYR* 3.6 19.3 - - + -
204A LEU* 3.5 29.8 - - + -
211A TYR* 3.8 1.0 - - - +
212A GLU* 3.5 3.3 - - - -
213A THR* 2.9 44.7 + - + +
214A SER 3.6 10.8 - - - +
215A TYR* 3.6 31.9 - - + +
218A SER 4.0 0.4 - - - +
219A PRO* 1.3 79.2 - - - +
221A VAL* 1.3 59.1 + - - +
222A TYR* 5.5 4.3 - - + -
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Residues in contact with VAL 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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5A HIS* 3.1 9.3 - - - +
201A TYR* 3.4 37.7 - - + +
202A TYR 3.0 10.9 + - - -
204A LEU* 2.9 33.2 + - - +
211A TYR 3.5 5.2 - - - +
212A GLU* 4.0 19.5 - - + -
219A PRO* 4.1 2.9 - - + -
220A VAL* 1.3 81.5 - - - +
222A TYR* 1.3 67.0 + - - +
223A PRO 4.0 0.9 - - - -
256A TYR* 3.4 39.7 - - + -
263A PRO* 4.1 10.5 - - + -
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Residues in contact with TYR 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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174A GLN 2.5 29.4 + - - -
175A GLY* 3.4 0.5 - - - -
176A VAL* 2.8 27.4 + - + +
179A VAL* 3.9 40.6 - - + -
204A LEU* 3.6 29.6 - - + -
205A GLY* 3.4 20.2 - - - -
207A ILE* 3.6 42.6 - - + +
209A LYS 4.7 0.2 - - - +
210A ARG* 3.1 4.2 - - - +
211A TYR* 2.9 40.7 + + + +
220A VAL* 5.5 2.2 - - + -
221A VAL* 1.3 74.8 - - - +
223A PRO* 1.3 69.2 - - - +
224A GLY 4.4 0.2 - - - +
256A TYR* 3.9 0.2 - - - -
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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