Contacts of the helix formed by residues 60 - 64 (chain A) in PDB entry 1YA8
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 LEU 60 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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58A PRO* 2.7 33.1 + - + +
59A PRO* 1.3 77.0 - - - +
61A GLY* 1.3 71.4 + - - +
62A PRO* 3.2 3.5 - - - +
63A LEU* 2.8 19.6 + - - +
64A ARG* 4.3 0.9 - - - -
114A GLU* 3.4 49.8 - - + +
115A ASP* 4.0 2.9 - - + +
3285A SO4 5.2 3.6 - - - +
280B ALA* 3.6 29.4 - - + +
281B VAL* 4.6 9.9 - - + -
284B HIS* 4.0 23.3 - - + +
3284B SO4 4.0 7.7 + - - +
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Residues in contact with GLY 61 (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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60A LEU* 1.3 74.6 - - - +
62A PRO* 1.3 71.9 - - - +
63A LEU 3.0 1.2 + - - -
64A ARG* 3.1 26.5 + - - +
114A GLU* 5.5 1.8 + - - -
287A ARG* 4.4 13.0 - - - +
284B HIS* 3.3 26.5 + - - -
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Residues in contact with PRO 62 (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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60A LEU 3.5 3.6 - - - +
61A GLY* 1.3 82.0 - - - +
63A LEU* 1.3 69.9 + - + +
64A ARG 3.1 2.8 + - - +
66A THR* 3.6 6.8 - - - +
287A ARG* 3.5 25.0 + - + -
3185A SO4 4.6 12.5 + - - +
3284B SO4 4.0 20.6 - - - +
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Residues in contact with LEU 63 (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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57A LYS* 3.7 39.9 - - + +
58A PRO 3.8 13.0 - - - +
59A PRO* 3.8 17.2 - - + +
60A LEU 2.8 13.7 + - - +
62A PRO* 1.3 84.8 - - + +
64A ARG* 1.3 61.8 + - - +
65A PHE 3.5 0.3 + - - -
66A THR* 2.7 35.5 + - - +
67A PRO 5.3 0.9 - - - +
69A GLN* 2.9 34.5 - - + +
171A ARG* 3.9 4.7 + - - -
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Residues in contact with ARG 64 (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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59A PRO 4.0 14.1 + - - +
60A LEU 3.9 1.6 + - - -
61A GLY* 3.1 21.7 + - - +
62A PRO 3.1 0.4 - - - -
63A LEU* 1.3 78.1 - - - +
65A PHE* 1.3 94.7 + - + +
66A THR* 2.9 8.1 - - - +
114A GLU* 2.6 35.5 + - - -
171A ARG* 4.8 2.0 - - - +
175A TRP* 4.0 17.7 - - + +
286A LEU 3.3 15.5 + - - -
287A ARG* 2.7 42.9 + - - +
289A LYS 2.7 24.7 + - - -
291A GLU 4.1 2.0 - - - +
294A LEU* 3.6 13.8 - - - +
3285A SO4 2.7 22.0 + - - -
284B HIS* 5.9 0.2 + - - -
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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