Contacts of the helix formed by residues 238 - 244 (chain D) in PDB entry 3L43
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 SER 238 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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211A ASP* 3.4 19.1 - - - -
212A GLU* 4.6 4.7 - - - +
208D ASP* 5.2 1.1 - - - -
236D ASN 3.5 3.4 + - - -
237D ARG* 1.3 75.1 - - - +
239D GLN* 1.4 58.2 + - - +
240D LYS* 3.5 7.8 + - - +
241D ASP* 3.1 32.6 + - - -
242D ILE* 3.2 24.4 + - - +
901D GDP 3.2 24.2 - - - -
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Residues in contact with GLN 239 (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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211A ASP* 2.7 20.7 + - - +
212A GLU 3.7 6.7 - - - +
213A GLY* 3.6 19.7 - - - +
214A THR* 3.7 19.5 - - + -
59D ARG* 4.8 6.2 - - - +
238D SER* 1.4 70.4 - - - +
240D LYS* 1.3 63.1 + - - +
242D ILE* 3.6 19.7 + - - +
243D ASP* 3.1 37.8 + - - +
901D GDP 2.6 29.5 + - - +
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Residues in contact with LYS 240 (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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212A GLU* 3.2 28.3 + - + +
213A GLY* 4.6 5.6 - - - +
238D SER* 3.3 6.4 - - - +
239D GLN* 1.3 76.4 - - - +
241D ASP* 1.4 54.9 + - - +
243D ASP* 3.4 5.3 + - - +
244D GLY* 2.8 32.9 + - - -
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Residues in contact with ASP 241 (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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236D ASN 4.7 1.4 - - - +
237D ARG* 3.8 22.4 + - + +
238D SER* 3.1 35.6 + - - +
240D LYS* 1.4 79.5 - - - +
242D ILE* 1.4 57.3 + - - +
244D GLY* 3.7 1.2 - - - -
245D LYS 3.2 2.4 + - - -
246D LYS* 2.7 67.9 + - + +
251D ALA* 5.6 0.5 - - - +
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Residues in contact with ILE 242 (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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46D SER* 5.2 1.1 - - - +
59D ARG* 3.6 40.2 - - + +
98D ARG* 6.3 1.1 - - - +
237D ARG* 3.5 38.7 + - + +
238D SER 3.2 10.8 + - - +
239D GLN* 3.9 23.3 - - - +
240D LYS 3.3 0.2 - - - -
241D ASP* 1.4 73.1 - - - +
243D ASP* 1.3 62.3 + - - +
245D LYS* 2.9 25.8 + - - +
901D GDP 3.2 30.7 - - - +
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Residues in contact with ASP 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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213A GLY* 5.0 8.5 - - - +
239D GLN* 3.1 37.7 + - - +
240D LYS* 3.7 6.3 - - - +
242D ILE* 1.3 76.9 - - - +
244D GLY* 1.3 57.2 + - - +
245D LYS* 3.2 9.1 + - - +
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Residues in contact with GLY 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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240D LYS 2.8 20.4 + - - -
241D ASP* 3.7 1.1 - - - -
242D ILE 3.3 0.2 - - - -
243D ASP* 1.3 70.6 - - - +
245D LYS* 1.4 66.8 + - - +
246D LYS* 3.3 6.4 + - - +
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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