Contacts of the helix formed by residues 216 - 223 (chain K) in PDB entry 6FF7
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 ALA 216 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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210K LYS* 2.9 21.8 - - - +
214K GLY 4.0 1.0 - - - +
215K GLU* 1.3 80.6 - - - +
217K ASN* 1.3 68.6 + - - +
218K LYS* 2.9 7.8 + - + +
219K GLU 3.5 8.9 + - - +
220K ASN 3.9 2.1 + - - -
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Residues in contact with ASN 217 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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207K TYR* 5.1 1.0 - - - +
210K LYS* 3.4 12.9 - - - +
211K GLN* 4.8 8.4 - - + +
216K ALA* 1.3 75.7 - - - +
218K LYS* 1.3 64.9 + - - +
220K ASN* 3.8 2.8 - - - +
221K ILE* 3.1 23.5 + - + +
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Residues in contact with LYS 218 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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216K ALA* 2.9 6.6 + - + +
217K ASN* 1.3 77.1 - - - +
219K GLU* 1.3 67.4 + - - +
220K ASN 3.0 0.5 + - - -
221K ILE* 3.7 3.6 - - - +
222K ARG* 2.9 25.6 + - - +
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Residues in contact with GLU 219 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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214K GLY 5.2 0.4 - - - +
215K GLU* 4.2 24.5 - - + -
216K ALA 3.5 2.6 + - - +
218K LYS* 1.3 78.7 - - - +
220K ASN* 1.3 57.1 + - - +
222K ARG* 3.4 7.2 + - - +
223K GLN* 3.0 28.3 + - - +
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Residues in contact with ASN 220 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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203K GLU 3.8 2.3 - - - +
206K ILE* 2.8 55.3 - - - +
207K TYR* 3.1 4.3 + - - +
209K ILE* 5.0 0.7 - - + -
210K LYS* 2.9 29.8 - - + +
214K GLY 5.0 1.9 + - - +
216K ALA 3.9 1.4 + - - -
218K LYS 3.0 0.2 + - - -
219K GLU* 1.3 74.4 - - - +
221K ILE* 1.3 67.2 + - - +
222K ARG 3.0 1.3 - - - -
223K GLN* 2.9 13.6 + - - +
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Residues in contact with ILE 221 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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203K GLU* 4.9 4.3 - - - +
207K TYR* 3.9 16.5 - - + +
217K ASN 3.1 15.4 + - - +
218K LYS* 3.1 4.9 + - - +
220K ASN* 1.3 78.0 - - - +
222K ARG* 1.3 59.3 + - - +
223K GLN 3.8 5.2 - - - +
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Residues in contact with ARG 222 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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218K LYS 2.9 17.1 + - - +
219K GLU* 3.5 7.6 - - - +
221K ILE* 1.3 78.0 - - - +
223K GLN* 1.3 64.9 + - - +
224K ASP* 3.4 6.8 + - - +
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Residues in contact with GLN 223 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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202K LEU 5.0 1.1 - - - +
203K GLU* 2.9 25.0 - - - +
206K ILE* 3.6 17.0 - - + -
219K GLU 3.0 11.3 + - - +
220K ASN* 2.9 14.3 + - - +
221K ILE 3.8 2.6 - - - +
222K ARG* 1.3 78.8 - - - +
224K ASP* 1.3 59.8 + - - +
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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