Contacts of the helix formed by residues 429 - 434 (chain A) in PDB entry 5IWM
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 ARG 429 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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427A ASP 4.3 7.4 - - - +
428A MET* 1.3 76.8 - - - +
430A LEU* 1.3 65.9 + - - +
431A ARG* 3.2 15.5 - - + +
432A ARG* 3.1 22.7 + - + +
433A LEU* 3.7 6.2 - - - +
426C LEU 3.5 9.4 - - - +
427C ASP* 2.7 60.4 + - - +
428C MET 3.4 5.4 - - - -
429C ARG* 3.2 40.8 - - + +
430C LEU* 5.4 0.2 - - - -
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Residues in contact with LEU 430 (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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429A ARG* 1.3 67.5 - - - +
431A ARG* 1.3 61.6 + - - +
432A ARG 3.0 5.6 - - - -
433A LEU* 3.1 24.8 + - + +
391C ILE* 4.9 2.9 - - + -
394C ILE* 4.4 7.0 - - + -
395C ILE* 4.0 22.7 - - + -
398C ILE* 3.4 31.1 - - + +
425C ILE* 3.3 35.7 - - + +
426C LEU* 3.3 3.2 + - - +
428C MET* 3.0 40.7 + - + +
429C ARG 5.4 0.7 - - - +
430C LEU* 3.7 28.0 - - + -
433C LEU* 5.1 5.8 - - + -
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Residues in contact with ARG 431 (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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429A ARG* 4.2 14.5 - - + +
430A LEU* 1.3 72.2 - - - +
432A ARG* 1.3 59.2 + - + +
433A LEU 3.1 6.0 + - - -
434A THR* 3.3 26.6 + - - +
437A GLU* 4.4 2.8 - - - +
398C ILE* 4.6 2.0 - - - -
404C ASP* 3.0 47.5 + - - +
408C MET* 5.8 0.4 - - - +
423C GLN* 2.8 30.1 + - - +
426C LEU* 3.2 45.9 + - + +
427C ASP* 2.7 36.0 + - - +
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Residues in contact with ARG 432 (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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377A ARG* 4.2 18.0 - - - +
384A LEU* 3.6 28.8 - - - +
388A LEU* 4.0 10.3 - - + +
424A ALA 5.8 0.6 + - - -
428A MET* 3.7 38.6 - - + +
429A ARG* 3.1 19.3 + - + +
430A LEU 3.0 0.6 - - - -
431A ARG* 1.3 80.3 - - + +
433A LEU* 1.3 56.9 + - - +
434A THR 3.3 2.7 - - - -
437A GLU* 3.4 49.0 + - + +
441A ILE* 4.7 11.8 - - + +
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Residues in contact with LEU 433 (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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388A LEU* 4.6 12.3 - - + -
391A ILE* 3.7 36.6 - - + -
395A ILE* 4.7 4.0 - - + -
428A MET* 5.1 6.7 - - + -
429A ARG 3.7 14.8 - - - +
430A LEU* 3.1 29.1 + - + +
431A ARG 3.1 1.8 - - - -
432A ARG* 1.3 80.8 - - + +
434A THR* 1.3 66.6 + - - +
395C ILE* 4.1 32.8 - - + -
398C ILE* 4.3 10.5 - - + -
399C ARG* 3.7 28.8 + - + +
430C LEU* 4.8 7.2 - - + -
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Residues in contact with THR 434 (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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431A ARG* 3.3 20.9 + - - +
432A ARG 3.3 0.6 - - - -
433A LEU* 1.3 82.1 - - - +
435A GLY* 1.3 65.5 + - - +
436A LEU* 3.2 1.6 + - - +
437A GLU* 3.3 30.3 + - - +
438A ARG* 4.6 1.9 + - - +
398C ILE* 3.7 19.7 - - + +
401C SER 3.3 13.7 - - - +
402C ASP 4.0 11.4 + - - -
403C THR* 3.9 12.5 - - - +
404C ASP* 3.5 17.0 + - - +
407C ALA* 4.5 6.1 - - + -
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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