Contacts of the strand formed by residues 250 - 253 (chain A) in PDB entry 3LKB
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 LEU 250 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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133A LEU* 4.0 2.7 - - + +
136A TYR* 3.4 39.3 - - + +
140A GLU* 5.8 0.7 - - - +
201A TYR* 6.2 0.7 - - + -
226A ARG* 4.0 24.0 - - + +
227A HIS 2.9 8.1 + - - -
228A LEU* 2.9 31.9 - - + +
229A GLY 2.8 31.2 + - - +
248A GLY 3.9 9.0 - - - +
249A PHE* 1.3 73.7 - - - +
251A TRP* 1.3 54.6 + - - +
358A ILE* 3.8 18.8 - - + -
359A LEU 3.4 5.6 - - - +
360A GLU* 3.8 30.5 - - + +
369A VAL* 4.3 3.8 - - + -
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Residues in contact with TRP 251 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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133A LEU* 4.5 2.0 - - - -
229A GLY 3.4 5.2 - - - -
230A ALA 3.3 17.2 + - - -
231A HIS* 2.7 33.3 + + - +
233A THR* 3.6 7.6 - - - -
234A GLY* 3.5 12.1 - - - +
235A GLY* 3.4 36.6 - - - -
249A PHE* 4.1 4.0 - - + -
250A LEU* 1.3 74.6 - - - +
252A ALA* 1.3 61.1 + - - +
253A THR* 3.8 24.9 - - + -
257A MET* 3.1 34.3 - - + -
285A VAL* 3.7 29.6 - - + -
357A ARG 3.6 1.0 - - - +
358A ILE* 3.3 4.9 - - - +
359A LEU* 2.8 42.9 + - + +
366A PHE* 3.6 30.7 - + + -
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Residues in contact with ALA 252 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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129A GLN* 4.0 26.6 - - + +
133A LEU* 3.9 18.2 - - + +
229A GLY 3.0 9.8 + - - +
230A ALA* 3.5 0.9 - - - -
231A HIS* 3.3 24.6 + - - -
251A TRP* 1.3 71.2 - - - +
253A THR* 1.3 65.6 + - - +
356A LEU* 4.9 3.6 - - + -
357A ARG 3.4 5.8 - - - +
358A ILE* 3.6 21.3 - - + -
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Residues in contact with THR 253 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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124A THR* 5.1 0.2 - - - -
129A GLN* 5.1 3.6 - - - -
231A HIS* 2.7 35.8 + - - -
251A TRP* 3.8 28.4 - - + -
252A ALA* 1.3 75.5 - - - +
254A SER* 1.3 60.7 + - - +
255A PHE* 3.5 17.5 + - + +
257A MET* 4.1 3.8 - - + -
356A LEU* 3.8 8.3 - - - +
357A ARG* 3.0 29.3 + - - +
359A LEU* 3.4 26.0 - - + +
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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