Contacts of the helix formed by residues 430 - 437 (chain A) in PDB entry 1Y57
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 ALA 430 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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428A TRP 3.9 0.8 + - - -
429A THR* 1.3 76.0 - - - +
431A PRO* 1.3 76.8 - - + +
432A GLU* 3.3 24.2 - - - +
433A ALA* 3.1 5.5 + - + +
434A ALA* 2.9 18.9 + - - +
443A SER* 3.9 14.0 + - - -
446A TRP* 3.6 33.2 - - + +
506A ARG* 3.8 4.0 - - - +
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Residues in contact with PRO 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 THR 3.6 1.3 - - - +
430A ALA* 1.3 89.1 - - + +
432A GLU* 1.3 61.4 + - - +
434A ALA* 3.3 0.3 + - - -
435A LEU* 2.8 40.8 + - + +
446A TRP* 3.6 25.8 - - + -
472A LEU* 4.1 13.5 - - + -
475A VAL* 3.8 24.2 - - + +
476A GLU* 4.3 23.1 - - + +
480A ARG* 5.7 1.3 - - - +
501A LYS* 5.9 4.7 - - + +
506A ARG* 4.5 1.1 - - - +
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Residues in contact with GLU 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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430A ALA* 3.6 10.8 - - - +
431A PRO* 1.3 77.7 - - - +
433A ALA* 1.3 62.9 - - - +
435A LEU* 5.4 0.2 - - - -
436A TYR* 3.1 33.2 + - + +
438A ARG* 3.2 49.4 + - + +
440A THR* 5.0 1.6 + - - -
443A SER* 3.8 10.0 + - - -
501A LYS 4.4 3.0 - - - +
503A PRO* 3.7 22.9 - - + +
506A ARG* 2.9 44.7 + - - -
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Residues in contact with ALA 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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423A LYS* 5.0 0.9 - - - +
429A THR* 3.9 5.4 - - + -
430A ALA 3.1 9.7 + - - +
432A GLU* 1.3 82.0 - - - +
434A ALA* 1.3 59.3 + - - +
437A GLY* 3.0 23.2 + - - -
438A ARG 3.7 18.8 - - - +
439A PHE* 3.6 41.2 - - + -
443A SER* 4.0 14.1 - - - -
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Residues in contact with ALA 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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423A LYS* 3.6 30.1 - - + +
426A ILE* 3.9 17.5 - - + -
429A THR* 3.8 16.6 - - + +
430A ALA 2.9 15.4 + - - +
431A PRO 3.8 3.6 - - - +
433A ALA* 1.3 77.3 - - - +
435A LEU* 1.3 63.4 + - - +
437A GLY 4.9 0.2 + - - -
472A LEU* 3.9 26.3 - - + +
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Residues in contact with LEU 435 (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 PRO* 2.8 28.3 + - + +
434A ALA* 1.3 76.2 - - - +
436A TYR* 1.3 92.9 + - + +
437A GLY 3.7 0.4 - - - -
472A LEU* 3.8 25.4 - - + -
476A GLU* 4.0 26.2 - - + -
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Residues in contact with TYR 436 (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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415A GLU* 4.4 4.5 - - - +
416A TYR 5.4 1.9 - - - +
432A GLU* 3.1 16.4 + - - +
435A LEU* 1.3 104.9 - - + +
437A GLY* 1.3 64.7 + - - +
438A ARG* 3.2 47.7 + - - +
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Residues in contact with GLY 437 (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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415A GLU* 4.5 4.3 - - - +
416A TYR* 4.4 22.4 + - - +
418A ALA* 4.5 11.9 - - - -
433A ALA 3.0 17.9 + - - -
434A ALA 4.7 0.2 - - - -
435A LEU 3.7 1.0 - - - -
436A TYR* 1.3 77.8 - - - +
438A ARG* 1.3 59.0 + - - +
439A PHE* 3.2 24.5 + - - -
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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