Contacts of the helix formed by residues 3362 - 3366 (chain D) in PDB entry 1DDX
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 ASP3362 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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3360D LYS* 3.8 32.3 + - + -
3361D PHE* 1.3 78.0 - - - +
3363D PRO* 1.3 65.1 - - - +
3364D GLU* 3.0 30.5 + - - +
3365D LEU* 2.9 55.2 + - + +
3535D MET* 4.1 6.0 - - - +
3545D TRP* 4.1 4.1 + - - -
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Residues in contact with PRO3363 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3361D PHE* 3.7 24.7 - - + -
3362D ASP* 1.3 78.8 - - - +
3364D GLU* 1.3 49.8 + - - +
3365D LEU 2.6 18.3 + - - -
3366D LEU* 2.8 18.0 + - + +
3367D PHE* 3.6 12.1 - - + -
3373D TYR* 3.7 5.0 + - - +
3535D MET* 4.0 10.1 - - + -
3540D CYS* 3.1 39.5 - - + +
3545D TRP* 3.4 47.3 - - + +
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Residues in contact with GLU3364 (chain D).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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2061C ARG* 5.3 5.9 + - - -
3362D ASP* 3.0 24.1 + - - +
3363D PRO* 1.3 76.0 - - - +
3365D LEU* 1.3 61.3 + - - +
3366D LEU 3.4 0.7 - - - -
3367D PHE* 3.4 41.5 - - + +
3368D ASN* 4.6 2.4 - - - +
3545D TRP* 3.8 13.4 + - + +
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Residues in contact with LEU3365 (chain D).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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3110D SER* 3.9 25.1 - - - -
3113D MET* 3.7 31.0 - - + -
3114D LYS* 4.0 32.5 - - + +
3117D LEU* 3.8 14.4 - - + -
3360D LYS* 5.1 1.8 - - + +
3362D ASP* 2.9 45.5 - - + +
3363D PRO 2.6 2.2 + - - -
3364D GLU* 1.3 81.2 - - - +
3366D LEU* 1.3 63.8 + - + +
3367D PHE 3.4 2.5 - - - -
3368D ASN* 3.4 7.8 - - - +
3369D GLN* 3.2 18.9 + - - +
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Residues in contact with LEU3366 (chain D).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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2370C GLN* 3.4 2.6 + - - -
3114D LYS* 6.2 0.2 - - - -
3117D LEU* 4.3 24.0 - - + -
3118D THR* 4.8 7.2 - - + +
3121D SER* 6.0 1.1 - - - +
3363D PRO* 2.8 7.1 + - + +
3365D LEU* 1.3 83.9 - - + +
3367D PHE* 1.3 55.1 + - - +
3368D ASN 2.7 18.2 + - - -
3369D GLN* 2.8 38.9 + - + +
3371D PHE* 3.7 34.3 - - + -
3373D TYR* 3.3 24.1 + - + +
3535D MET* 3.8 35.7 - - + -
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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