Contacts of the helix formed by residues 16 - 21 (chain G) in PDB entry 6KW5
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 PHE 16 (chain G).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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352F ALA 5.4 0.2 - - - -
353F TYR* 3.3 50.3 - + - -
354F THR* 5.8 0.2 - - + -
14G SER* 2.7 18.4 + - - +
15G ASN* 1.3 74.3 - - - +
17G HIS* 1.3 60.5 + - - +
18G ASN 3.3 1.3 - - - -
19G ARG* 3.3 11.5 + - + +
20G LEU* 3.1 61.1 + - + +
27G ILE* 5.5 1.3 - - + -
242G ASP* 3.8 22.4 - - + +
243G LEU* 5.4 0.4 - - + -
135H GLU* 5.5 0.2 - - - +
138H THR* 4.5 11.7 - - + +
140H THR* 4.5 21.3 - - + -
141H ALA* 3.8 26.5 - - + -
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Residues in contact with HIS 17 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
14G SER 4.2 10.9 + - - -
15G ASN* 5.0 1.8 + - - -
16G PHE* 1.3 76.2 - - - +
18G ASN* 1.3 98.4 + - - +
20G LEU* 3.1 15.9 + - + +
21G THR* 3.0 31.3 + - - +
30G PHE* 5.7 1.1 - - + -
177G ASN 5.2 0.6 + - - -
179G LYS* 3.4 32.4 - - + +
242G ASP 4.3 8.2 + - - +
243G LEU 4.0 19.1 - - - +
244G ASP* 4.1 22.5 - - + +
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Residues in contact with ASN 18 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
15G ASN* 2.8 28.9 + - - +
16G PHE 3.3 0.6 - - - -
17G HIS* 1.3 104.9 + - - +
19G ARG* 1.3 55.6 + - - +
21G THR* 3.2 11.6 + - - -
22G ASN* 3.0 28.9 + - - +
173G ASP* 5.5 3.4 - - - +
177G ASN* 2.8 34.6 + - + +
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Residues in contact with ARG 19 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
350F ARG* 4.2 6.5 - - - +
352F ALA 3.8 15.2 + - - +
353F TYR 3.2 24.6 + - - -
354F THR* 3.4 3.6 - - - +
355F ASN* 3.1 58.3 + - - +
15G ASN* 2.7 29.3 + - - +
16G PHE* 3.3 15.8 + - + +
17G HIS 3.3 0.4 - - - -
18G ASN* 1.3 75.4 - - - +
20G LEU* 1.3 64.9 + - - +
21G THR 3.6 0.2 + - - -
22G ASN* 3.7 21.7 + - - +
25G ASP* 3.8 18.5 - - - +
27G ILE* 3.3 16.6 - - + +
173G ASP* 4.8 11.7 - - - +
174G THR* 6.4 0.2 - - - -
135H GLU* 2.5 27.4 + - - -
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Residues in contact with LEU 20 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
353F TYR* 5.0 0.2 - - + -
16G PHE* 3.1 54.8 + - + +
17G HIS* 3.1 17.2 + - - +
19G ARG* 1.3 79.0 - - - +
21G THR* 1.3 57.7 + - - +
22G ASN 3.5 1.3 + - - -
23G GLU 5.2 1.2 + - - -
25G ASP 5.6 1.0 - - - +
27G ILE* 3.7 37.0 - - + +
29G ILE* 4.0 15.9 - - + -
30G PHE* 3.6 49.6 + - + +
243G LEU* 3.7 17.3 - - + -
140H THR* 6.2 0.2 - - + -
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Residues in contact with THR 21 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
17G HIS 3.0 15.2 + - - +
18G ASN* 3.2 13.1 + - - +
20G LEU* 1.3 80.4 - - - +
22G ASN* 1.3 60.6 + - - +
23G GLU* 3.5 9.5 - - - +
30G PHE* 4.1 21.8 - - + -
31G THR 6.1 0.9 - - - -
32G MET 4.1 27.6 - - - +
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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
------------------------------------------------------------
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