Contacts of the strand formed by residues 244 - 247 (chain A) in PDB entry 1HXK
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 GLU 244 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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241A ARG 4.8 1.8 + - - +
242A GLN* 4.0 2.1 - - - -
243A LEU* 1.3 78.3 - - - +
245A PHE* 1.3 64.5 + - - +
260A PHE* 3.7 25.4 - - + -
261A THR 3.1 3.8 - - - -
262A HIS* 2.9 28.9 + - - +
329A TYR* 3.6 26.4 - - + +
330A ARG* 4.7 3.7 + - + -
331A THR* 4.9 4.3 + - - +
382A TYR* 2.6 33.4 + - - -
386A VAL* 4.4 4.3 - - - +
397A PHE* 3.7 26.5 - - + -
398A PRO* 3.4 21.8 - - - +
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Residues in contact with PHE 245 (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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226A ILE* 4.4 1.3 - - + -
237A LEU* 4.6 0.2 - - + -
242A GLN 3.2 22.9 - - - +
243A LEU 3.6 13.9 - - - -
244A GLU* 1.3 75.9 - - - +
246A LEU* 1.3 60.9 + - - +
247A TRP* 3.4 26.5 + + + -
260A PHE* 3.6 5.3 - - - -
261A THR* 2.7 64.1 + - + -
263A MET* 4.1 18.8 - - + -
397A PHE* 4.7 2.5 - - - -
398A PRO* 3.3 21.3 - - + +
400A LEU* 3.8 38.4 - - + -
404A PHE* 3.9 20.6 - + - -
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Residues in contact with LEU 246 (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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245A PHE* 1.3 70.5 - - - +
247A TRP* 1.3 63.0 + - - +
248A ARG* 3.4 4.9 + - - +
258A ALA* 4.3 18.8 - - + +
259A LEU 3.9 3.1 - - - -
260A PHE* 3.9 33.4 - - + +
387A HIS* 6.0 0.4 - - + -
390A GLU* 5.5 7.4 - - - +
397A PHE* 4.4 23.8 - - + +
398A PRO 2.9 13.4 + - - +
399A THR* 3.5 18.4 - - + -
400A LEU 3.0 21.4 + - - -
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Residues in contact with TRP 247 (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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208A HIS* 4.3 6.3 - - + -
209A SER 3.6 18.8 - - - -
210A PRO* 3.5 24.9 - - + +
213A PRO* 3.7 28.9 - - + +
224A MET* 4.0 13.2 - - + -
226A ILE* 4.3 12.1 - - + -
245A PHE* 3.4 15.9 + + + -
246A LEU* 1.3 69.1 - - - +
248A ARG* 1.3 67.4 + - - +
249A GLN* 5.1 0.3 - - - +
257A THR 3.8 3.1 - - - +
258A ALA* 3.3 1.6 - - - -
259A LEU* 3.0 30.5 + - - +
261A THR* 3.4 30.7 - - + +
400A LEU* 3.4 24.4 - - + +
402A GLY 3.0 30.3 + - - +
404A PHE* 3.6 32.8 - + - -
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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