Contacts of the helix formed by residues 218 - 225 (chain K) in PDB entry 5G04
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 THR 218 (chain K).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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203K PHE* 3.6 25.1 - - + -
206K GLU* 5.2 8.5 - - + -
207K ASN* 3.9 18.6 + - - +
210K LYS* 5.0 8.7 - - - +
217K GLU* 1.3 93.1 + - + +
219K VAL* 1.3 62.8 + - - +
220K ILE* 3.2 4.8 - - - +
221K PRO* 3.4 21.4 - - + +
222K GLU* 3.5 21.6 + - - +
240K ARG* 4.6 15.3 + - - +
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Residues in contact with VAL 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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215K PRO 4.9 4.5 - - - +
216K SER 3.9 21.1 - - - +
217K GLU* 4.3 4.9 - - - +
218K THR* 1.3 78.8 - - - +
220K ILE* 1.3 63.7 + - + +
222K GLU* 3.2 27.7 + - + +
223K SER* 3.3 12.3 + - - -
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Residues in contact with ILE 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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199K GLU* 5.7 3.8 - - - +
218K THR 3.2 2.7 - - - +
219K VAL* 1.3 76.7 - - + +
221K PRO* 1.3 72.9 - - + +
223K SER* 2.4 32.5 + - - +
224K VAL* 3.3 12.2 - - + +
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Residues in contact with PRO 221 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
199K GLU* 5.5 6.7 - - - +
203K PHE* 3.4 47.1 - - + -
218K THR* 3.4 20.9 - - + +
220K ILE* 1.3 95.9 - - + +
222K GLU* 1.3 59.0 + - - +
224K VAL* 3.2 12.3 + - + +
225K ASP* 2.9 30.2 + - - +
227K LEU* 6.1 2.4 - - + +
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Residues in contact with GLU 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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203K PHE* 5.4 7.8 - - + -
218K THR* 3.5 15.5 + - - +
219K VAL* 3.2 22.2 + - + +
221K PRO* 1.3 75.3 - - + +
223K SER* 1.3 64.5 + - - +
225K ASP* 2.3 29.7 + - - +
227K LEU* 5.8 1.3 - - + -
228K GLN* 3.1 63.1 + - + +
233K VAL* 4.6 6.4 - - - +
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Residues in contact with SER 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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219K VAL 3.3 8.2 + - - -
220K ILE* 2.4 36.5 + - - +
222K GLU* 1.3 76.4 - - - +
224K VAL* 1.3 64.9 + - - +
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Residues in contact with VAL 224 (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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196K GLU* 6.4 2.5 - - + -
199K GLU* 4.6 17.9 - - + +
220K ILE* 3.3 20.9 - - + +
221K PRO* 3.3 10.8 - - + +
222K GLU 3.0 0.4 - - - -
223K SER* 1.3 83.7 - - - +
225K ASP* 1.3 78.0 + - - +
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Residues in contact with ASP 225 (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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32J LEU* 3.6 30.7 - - + +
200K LEU* 4.8 11.1 - - - +
221K PRO* 2.9 12.1 + - - +
222K GLU* 2.3 32.3 + - - +
224K VAL* 1.3 103.0 - - - +
226K GLY* 1.3 61.0 + - - +
227K LEU* 3.4 13.9 + - + +
228K GLN* 4.5 3.3 + - - +
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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