Contacts of the helix formed by residues 224 - 228 (chain D) in PDB entry 6E7P
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 LYS 224 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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167D GLN* 4.5 4.8 + - - -
169D TYR* 3.5 49.9 + - + +
191D ASP* 5.2 0.2 + - - -
222D THR* 4.7 17.4 + - - +
223D LEU* 1.3 80.4 - - - +
225D PHE* 1.3 68.0 + - - +
226D HIS* 3.3 23.8 - - + +
227D LYS* 3.2 19.3 + - + -
228D LEU* 3.3 8.3 + - - -
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Residues in contact with PHE 225 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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144A LEU* 4.6 26.5 - - + -
145A GLY 5.7 2.9 + - - +
122D ARG* 3.2 54.1 - - + +
125D LEU* 3.6 17.0 - - + -
126D TYR* 3.8 32.3 - + - -
223D LEU* 3.6 35.2 - - + -
224D LYS* 1.3 77.6 - - - +
226D HIS* 1.3 65.3 + - - +
227D LYS 3.1 1.6 + - - -
228D LEU* 3.2 32.9 + - + +
264D ASN* 5.0 5.2 + - - -
267D HIS* 5.3 2.9 + - - -
271D ILE* 5.8 0.2 - - + -
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Residues in contact with HIS 226 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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146A ARG* 3.7 41.3 - - + +
242A LEU* 4.8 9.7 - - - +
173D GLY 4.7 3.5 + - - -
174D HIS* 6.2 0.2 - - - -
175D VAL* 4.1 20.6 + - + +
224D LYS* 4.5 16.9 - - + +
225D PHE* 1.3 83.7 - - - +
227D LYS* 1.3 87.6 + - + +
267D HIS* 5.2 3.5 + - - -
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Residues in contact with LYS 227 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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242A LEU* 6.1 0.7 - - - -
169D TYR* 3.3 28.6 - - + +
170D TYR* 3.2 53.8 + - + +
171D HIS 4.5 2.0 - - - -
172D ARG* 4.1 4.9 - - - +
173D GLY* 2.6 47.7 + - - +
224D LYS* 3.2 14.4 + - + +
225D PHE 3.1 0.4 - - - -
226D HIS* 1.3 100.4 + - + +
228D LEU* 1.3 64.2 + - - +
229D VAL* 3.8 4.3 - - - +
267D HIS* 5.0 4.1 - - - -
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Residues in contact with LEU 228 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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125D LEU* 4.5 7.2 - - + -
167D GLN* 4.8 4.9 - - + +
168D ARG 3.7 15.7 - - - +
169D TYR* 4.2 2.5 - - + -
223D LEU* 4.2 26.0 - - + +
224D LYS 3.3 10.8 + - - +
225D PHE* 3.2 39.7 + - + +
226D HIS 3.7 0.2 - - - -
227D LYS* 1.3 76.8 - - - +
229D VAL* 1.3 68.1 + - - +
230D ASN* 4.2 4.9 - - - +
231D VAL* 3.8 27.4 - - + -
264D ASN* 3.9 18.1 + - + +
267D HIS* 3.1 23.6 - - - -
271D ILE* 5.1 4.5 - - + -
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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