Contacts of the helix formed by residues 728 - 733 (chain E) in PDB entry 1NKP
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 728 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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547D THR* 4.6 2.9 - - - +
550D ILE* 3.5 34.2 - - - +
551D LEU* 4.1 19.1 - - - -
554D GLN* 3.1 26.8 + - - +
724E SER 3.6 10.6 + - - -
725E LEU* 2.7 23.8 + - - +
727E ASP* 1.3 78.8 - - - +
729E VAL* 1.3 59.0 + - - +
730E PRO* 3.5 4.0 - - - +
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Residues in contact with VAL 729 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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550D ILE* 4.0 10.8 - - + -
725E LEU* 3.4 15.3 - - + +
726E ARG 3.2 8.2 + - - +
727E ASP 3.4 0.2 - - - -
728E SER* 1.3 80.5 - - - +
730E PRO* 1.3 72.9 - - + +
731E SER* 3.5 22.7 - - - +
732E LEU* 3.0 34.8 + - + +
733E GLN* 3.6 9.8 + - - +
745E LYS 4.0 15.5 - - - +
746E ALA* 3.9 23.8 - - + -
749E TYR* 4.1 9.6 - - + -
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Residues in contact with PRO 730 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
976A HIS* 6.5 0.9 - - + -
979A GLU* 3.6 23.3 - - + +
980A GLN* 4.0 14.3 - - + +
554D GLN* 4.5 3.4 - - - +
728E SER 3.5 6.7 - - - +
729E VAL* 1.3 83.3 - - + +
731E SER* 1.3 60.7 + - - +
732E LEU 3.2 1.2 + - - -
733E GLN* 3.3 37.6 + - + +
749E TYR* 3.4 43.7 - - + +
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Residues in contact with SER 731 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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979A GLU 3.4 8.2 + - - -
980A GLN 3.3 14.7 - - - +
981A LEU 4.2 2.3 - - - +
982A GLY* 3.5 33.7 - - - -
729E VAL* 3.5 15.1 - - - +
730E PRO* 1.3 78.8 - - - +
732E LEU* 1.3 62.7 + - - +
733E GLN 3.5 3.4 - - - +
735E GLU* 4.7 6.1 - - - +
745E LYS* 3.9 20.0 + - - +
748E GLU* 4.6 2.6 + - - -
749E TYR* 5.7 1.1 - - - +
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Residues in contact with LEU 732 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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726E ARG* 3.2 49.4 + - + +
729E VAL* 3.0 33.4 + - + +
731E SER* 1.3 79.8 - - - +
733E GLN* 1.3 66.8 + - - +
735E GLU* 3.4 16.8 + - + +
737E ALA* 3.7 23.1 - - + -
741E GLN* 4.4 3.8 - - + +
742E ILE* 3.8 23.8 - - - +
745E LYS* 3.7 31.9 - - + -
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Residues in contact with GLN 733 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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980A GLN* 5.8 3.3 - - - +
726E ARG* 4.7 3.4 - - - +
727E ASP* 4.8 15.3 + - - +
729E VAL 3.8 9.4 - - - +
730E PRO* 3.3 32.4 + - - +
731E SER 4.6 2.6 - - - +
732E LEU* 1.3 78.1 - - - +
734E GLY* 1.3 65.4 + - - +
735E GLU* 3.3 2.9 + - - +
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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