Contacts of the strand formed by residues 276 - 279 (chain C) in PDB entry 3LL8
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 276 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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194C GLN 3.7 1.5 + - - +
195C PHE* 3.4 23.8 - - - -
196C LEU 3.2 22.0 + - - -
269C LEU* 3.6 11.5 - - - +
274C LEU* 4.8 0.2 - - - +
275C LEU* 1.3 82.3 - - - +
277C ILE* 1.3 69.0 + - - +
278C LEU* 4.1 1.6 - - - +
299C PHE* 3.7 13.1 - - - -
300C PRO 2.9 21.0 + - - -
301C SER 3.6 11.5 - - - -
302C LEU* 3.8 5.2 + - - -
303C ILE* 4.1 5.2 - - - +
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Residues in contact with ILE 277 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
196C LEU* 3.3 39.5 - - + +
198C VAL* 4.3 14.1 - - + -
201C GLY* 5.1 4.9 - - - -
202C LEU* 4.3 14.4 - - + -
260C TYR* 5.3 0.2 - - - +
265C VAL* 4.2 12.1 - - + -
268C PHE* 4.2 12.1 - - + -
269C LEU* 3.7 21.5 - - + -
276C SER* 1.3 74.7 + - - +
278C LEU* 1.3 67.5 + - - +
279C ARG* 4.2 7.2 - - + -
301C SER 3.2 11.1 + - - +
302C LEU* 3.4 23.5 - - + +
303C ILE 2.9 26.7 + - - +
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Residues in contact with LEU 278 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
87C VAL* 4.3 10.3 - - + -
116C LEU* 4.2 9.2 - - + +
191C MET* 3.8 28.7 - - + -
195C PHE* 4.0 29.8 - - + -
196C LEU 2.8 9.6 + - - +
197C CYS* 3.2 21.7 - - + +
198C VAL 3.0 24.3 + - - +
276C SER* 4.1 1.8 - - - +
277C ILE* 1.3 75.3 - - - +
279C ARG* 1.3 61.8 + - - +
303C ILE* 3.6 35.2 - - + +
305C ILE* 5.8 2.0 - - + -
322C LEU* 4.0 22.7 - - + -
329C MET* 4.7 1.6 - - + -
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Residues in contact with ARG 279 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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116C LEU* 3.8 4.7 - - - -
198C VAL* 3.0 22.4 - - + +
199C HIS 3.6 3.1 - - - +
200C GLY 2.8 21.0 + - - +
233C SER 3.2 16.6 + - - -
234C ASP* 2.9 32.7 + - - +
235C PRO* 3.5 10.8 - - - +
260C TYR* 3.3 3.7 + - - +
277C ILE* 4.2 1.8 - - + -
278C LEU* 1.3 76.0 - - - +
280C ALA* 1.3 75.2 + - - +
281C HIS* 3.6 8.9 - - - -
282C GLU* 2.8 25.1 + - - +
291C TYR* 4.0 0.2 + - - -
302C LEU* 3.6 27.6 - - + -
303C ILE 2.9 8.6 + - - +
304C THR* 3.0 33.0 + - - -
305C ILE* 2.9 27.1 + - - +
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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