Contacts of the helix formed by residues 242 - 250 (chain D) in PDB entry 5TWV
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 242 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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238D LYS 3.0 13.7 + - - +
239D THR* 3.0 15.9 + - - +
240D ALA 3.2 0.9 - - - +
241D HIS* 1.3 76.9 - - - +
243D LYS* 1.3 60.3 + - - +
244D PRO* 4.7 3.6 - - + -
245D ILE* 3.4 27.8 - - + +
246D ASP* 3.2 14.9 + - - +
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Residues in contact with LYS 243 (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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240D ALA 5.2 0.2 - - - -
241D HIS 3.4 4.2 + - - +
242D LYS* 1.3 71.3 - - - +
244D PRO* 1.3 80.2 - - + +
246D ASP* 3.5 11.5 + - - +
247D LEU* 3.6 11.4 + - - +
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Residues in contact with PRO 244 (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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242D LYS* 3.8 3.8 - - + -
243D LYS* 1.3 97.7 - - + +
245D ILE* 1.3 62.7 + - - +
247D LEU* 3.6 10.7 + - + +
248D ARG* 3.7 11.3 + - - +
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Residues in contact with ILE 245 (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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239D THR* 3.8 15.9 - - - +
242D LYS* 3.4 23.5 + - + +
243D LYS 3.3 0.2 - - - -
244D PRO* 1.3 80.8 - - - +
246D ASP* 1.3 59.1 + - - +
248D ARG* 3.3 7.1 + - - +
249D ALA* 2.8 31.6 + - + +
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Residues in contact with ASP 246 (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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239D THR 3.5 9.6 + - - +
240D ALA* 3.8 14.1 - - - +
242D LYS 3.2 19.8 + - - +
243D LYS* 3.8 6.5 - - - +
244D PRO 3.3 0.4 - - - -
245D ILE* 1.3 76.2 - - - +
247D LEU* 1.3 60.3 + - - +
249D ALA* 3.8 5.1 - - - +
250D ILE* 2.8 35.3 + - + +
1184D VAL* 6.0 3.6 - - + -
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Residues in contact with LEU 247 (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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243D LYS 3.6 8.1 + - - +
244D PRO* 4.0 8.3 - - + +
245D ILE 3.3 0.8 - - - -
246D ASP* 1.3 78.5 - - - +
248D ARG* 1.3 63.6 + - - +
250D ILE* 3.6 9.6 + - - +
251D ALA* 3.6 15.1 + - - +
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Residues in contact with ARG 248 (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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244D PRO 3.7 8.9 + - - +
245D ILE* 3.3 9.5 + - - +
246D ASP 3.3 0.2 - - - -
247D LEU* 1.3 80.0 - - - +
249D ALA* 1.3 61.9 + - - +
251D ALA* 3.3 3.6 + - - +
252D LYS* 3.2 28.6 + - - +
323E ASP* 6.0 0.9 - - - +
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Residues in contact with ALA 249 (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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239D THR* 4.4 17.9 - - - -
240D ALA* 6.4 0.2 - - - -
245D ILE 2.8 22.5 + - - +
246D ASP* 3.8 6.3 - - - +
248D ARG* 1.3 75.1 - - - +
250D ILE* 1.3 57.5 + - - +
251D ALA 3.1 5.3 + - - -
252D LYS 4.9 1.1 - - - +
253D LEU* 3.3 29.1 + - - +
256D ALA* 4.9 8.9 - - + +
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Residues in contact with ILE 250 (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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246D ASP* 2.8 22.2 + - + +
247D LEU* 3.6 4.5 + - - +
248D ARG 3.4 0.2 - - - -
249D ALA* 1.3 71.3 - - - +
251D ALA* 1.3 58.6 + - - +
253D LEU* 4.8 5.2 - - - -
1188D ASP* 3.5 36.8 - - + +
1191D GLN* 5.6 4.2 - - - +
1192D LEU* 5.5 4.6 - - - +
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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