Contacts of the helix formed by residues 44 - 49 (chain G) in PDB entry 1KYO
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 LYS 44 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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38G TYR* 3.9 1.6 - - - -
43G LEU* 1.3 78.2 - - - +
45G PHE* 1.3 66.8 + - - +
46G ASP 3.2 3.6 - - - +
47G ASP* 2.9 30.8 + - - +
48G LEU* 3.8 5.7 + - - +
67G GLU* 5.3 7.1 + - - -
74G ARG* 3.9 32.2 - - - +
94G ILE* 4.2 20.6 - - + -
98G GLU* 3.1 42.2 + - - +
99G ASP* 3.5 11.0 - - - +
100G VAL* 4.5 8.1 - - - +
102G TYR* 4.3 15.2 - - + +
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Residues in contact with PHE 45 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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312C VAL* 4.3 10.3 - - + -
313C VAL* 3.7 27.8 - - + -
375C ASN* 5.6 1.1 - - - -
378C PHE* 3.2 57.9 - + + -
379C TYR 5.9 0.2 - - - -
382C ARG* 3.1 44.8 - - - +
5G PHE* 5.0 5.6 - + - -
38G TYR* 3.5 20.9 - + - +
44G LYS* 1.3 72.1 - - - +
46G ASP* 1.3 56.5 + - - +
48G LEU* 2.7 45.4 + - + +
49G ILE* 3.6 16.8 + - + -
99G ASP* 3.0 9.7 + - - -
100G VAL 5.6 0.2 + - - -
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Residues in contact with ASP 46 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
382C ARG* 2.9 24.2 + - - +
5G PHE* 5.7 0.7 - - - -
44G LYS* 3.2 1.6 - - - +
45G PHE* 1.3 78.4 - - - +
47G ASP* 1.3 61.3 + - - +
48G LEU 3.3 0.5 + - - -
49G ILE* 3.5 38.9 + - - +
71G ARG* 4.7 2.9 + - - -
100G VAL 4.6 1.3 + - - +
101G PRO* 3.2 17.3 - - - +
102G TYR* 3.6 27.0 + - + -
103G LEU* 2.8 37.6 + - + +
104G LEU* 3.0 13.1 + - - +
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Residues in contact with ASP 47 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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212C ILE* 3.5 18.2 - - - +
43G LEU* 3.7 21.4 - - + +
44G LYS* 2.9 23.7 + - - +
45G PHE 3.0 0.6 + - - -
46G ASP* 1.3 76.7 - - - +
48G LEU* 1.3 62.5 + - + +
49G ILE 3.5 4.0 + - - +
71G ARG* 3.8 14.0 + - - +
74G ARG* 2.7 40.6 + - - +
75G ILE* 4.5 14.5 - - + +
102G TYR* 2.5 33.7 + - - -
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Residues in contact with LEU 48 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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210C LEU 5.4 0.7 - - - +
211C GLY 4.6 2.9 - - - +
212C ILE* 3.7 21.0 - - + +
313C VAL* 3.8 27.0 - - + +
318C PHE* 3.5 36.8 - - + -
378C PHE* 5.6 0.9 - - + -
38G TYR* 3.9 26.5 - - + -
43G LEU* 3.7 31.6 - - + -
44G LYS 4.0 9.0 - - - +
45G PHE* 2.7 25.6 + - + +
47G ASP* 1.3 81.5 - - - +
49G ILE* 1.3 65.4 + - - +
50G ALA* 3.1 4.7 + - - -
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Residues in contact with ILE 49 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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212C ILE* 5.2 2.3 - - - +
312C VAL* 3.9 11.0 - - + +
313C VAL* 4.7 1.7 - - - +
5G PHE* 3.6 39.3 - - + -
45G PHE* 3.6 13.0 + - + +
46G ASP* 3.6 41.8 - - - +
47G ASP 3.5 6.0 - - - +
48G LEU* 1.3 76.1 - - - +
50G ALA* 1.3 71.8 + - - +
51G GLU* 3.2 6.1 + - - +
56G MET* 3.4 37.3 - - + +
71G ARG* 5.3 2.3 + - - -
103G LEU* 4.9 1.6 - - + -
104G LEU* 5.9 0.4 - - + -
107G ILE* 3.6 17.3 - - + -
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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