Contacts of the helix formed by residues 217 - 221 (chain M) in PDB entry 5X22
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 LEU 217 (chain M).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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157M ARG* 5.3 7.0 - - - +
176M VAL* 4.5 15.9 - - + +
180M GLY 4.7 3.5 - - - +
211M LEU 6.0 0.2 - - - +
214M TYR* 3.8 19.5 + - + +
215M GLY 2.7 32.8 + - - +
216M GLU* 1.3 71.8 - - - +
218M VAL* 1.3 62.7 + - - +
220M GLY* 3.3 12.3 + - - -
221M LEU 3.8 2.3 + - - -
311M PHE* 3.6 61.3 - - + +
314M THR* 4.4 22.0 - - + -
315M ALA* 4.7 10.1 - - + -
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Residues in contact with VAL 218 (chain M).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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207M LEU 4.0 17.7 - - - +
208M ALA* 4.9 2.0 - - - -
211M LEU* 4.0 28.9 + - + +
212M GLY* 4.5 10.3 - - - +
214M TYR 4.5 7.9 + - - +
216M GLU* 4.9 1.8 - - - +
217M LEU* 1.3 78.0 - - - +
219M GLN* 1.3 77.7 + - + +
221M LEU* 2.9 32.8 + - + +
222M MET* 3.1 34.3 + - + +
311M PHE* 4.5 4.7 - - + -
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Residues in contact with GLN 219 (chain M).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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216M GLU* 3.1 39.2 + - + +
218M VAL* 1.3 89.6 - - + +
220M GLY* 1.3 58.1 + - - +
222M MET* 3.4 34.7 + - - +
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Residues in contact with GLY 220 (chain M).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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180M GLY* 3.2 30.7 - - - -
181M VAL* 3.3 30.1 - - - +
182M VAL* 4.5 1.8 - - - -
194M VAL* 4.5 0.3 - - - +
216M GLU 3.8 3.0 + - - -
217M LEU 3.3 7.4 + - - -
218M VAL 3.1 1.0 - - - -
219M GLN* 1.3 75.7 - - - +
221M LEU* 1.3 58.8 + - - +
222M MET 3.2 5.7 + - - +
223M ASP* 5.9 0.2 - - - +
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Residues in contact with LEU 221 (chain M).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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182M VAL* 3.6 27.3 - - + +
193M LEU 4.7 0.4 - - - -
194M VAL* 3.2 42.0 - - + +
197M LEU* 3.6 20.6 - - + -
207M LEU* 3.9 23.8 - - + -
211M LEU* 3.6 31.9 - - + -
217M LEU 3.8 3.3 + - - +
218M VAL* 2.9 25.6 + - + +
220M GLY* 1.3 77.5 - - - +
222M MET* 1.3 59.9 + - - +
227M PHE* 4.2 3.5 - - - -
307M LEU* 3.8 10.3 - - + -
311M PHE* 4.4 3.1 - - + -
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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