Contacts of the strand formed by residues 236 - 240 (chain B) in PDB entry 3CB4
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 ARG 236 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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203B TYR* 5.1 1.0 - - - -
204B LEU* 3.7 19.7 - - - +
219B LYS* 3.9 14.6 - - - +
235B ASP* 1.3 87.1 - - + +
237B LEU* 1.3 67.5 + - - +
244B GLN* 3.9 13.1 + - - -
246B ASP* 2.9 42.0 + - - +
257B TRP* 3.9 14.8 - - + -
258B LEU* 3.8 4.6 - - - +
259B VAL* 2.8 37.1 + - + +
308C GLU* 4.5 2.0 - - - +
311C ARG* 3.7 20.9 - - - +
312C ASP* 3.1 38.6 + - - -
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Residues in contact with LEU 237 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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217B LEU* 4.3 8.7 - - + +
218B ARG 3.7 30.3 - - - +
219B LYS* 4.1 13.6 - - + +
234B ALA* 4.5 3.8 - - + -
236B ARG* 1.3 78.3 - - - +
238B GLY* 1.3 52.1 + - - +
246B ASP* 3.7 4.4 + - - +
247B ARG* 2.7 43.0 + - + +
248B THR 4.6 0.2 - - - +
249B GLU* 3.6 37.9 - - - +
250B LEU* 3.7 15.0 - - + +
257B TRP* 3.4 25.2 - - - +
258B LEU* 3.9 20.6 - - + -
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Residues in contact with GLY 238 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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237B LEU* 1.3 77.2 - - - +
239B ILE* 1.3 60.9 + - - +
245B VAL 3.2 13.5 - - - -
247B ARG* 3.7 14.6 - - - -
250B LEU* 3.7 5.7 - - - +
256B GLY* 3.2 7.4 - - - -
257B TRP* 2.8 42.2 + - - +
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Residues in contact with ILE 239 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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60B THR* 3.7 36.1 - - + +
72B GLN* 5.2 7.6 - - - +
238B GLY* 1.3 77.6 - - - +
240B PHE* 1.3 57.8 + - - +
241B THR* 4.0 15.7 - - - +
243B LYS 3.5 1.7 - - - +
245B VAL* 3.0 32.3 + - + +
247B ARG* 3.7 40.4 - - + +
250B LEU* 3.9 14.6 - - + -
254B GLU* 5.5 2.5 - - + +
255B VAL 3.5 21.5 - - - +
256B GLY* 4.4 2.7 - - - -
257B TRP* 3.5 9.0 + - - -
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Residues in contact with PHE 240 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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58B SER* 3.4 35.6 + - - +
59B VAL* 4.4 0.2 - - - -
60B THR* 2.7 38.9 + - - -
199B TRP* 3.9 27.8 - + - -
207B VAL* 5.2 0.9 - - + -
209B LEU* 4.3 7.6 - - + -
239B ILE* 1.3 74.3 - - - +
241B THR* 1.3 57.4 + - - +
242B PRO* 3.5 19.7 - - + +
243B LYS 3.4 0.9 - - - -
244B GLN* 3.7 42.2 - - + -
255B VAL 5.6 0.2 + - - -
256B GLY* 5.5 0.8 - - - -
257B TRP* 3.5 35.2 - + + -
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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