Contacts of the helix formed by residues 68 - 72 (chain A) in PDB entry 4GFU
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 TYR 68 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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37A SER* 5.2 6.9 + - - -
40A TRP* 5.0 5.4 - - - +
46A CYS* 3.7 34.8 - - + +
47A SER 3.2 10.1 - - - -
48A THR* 4.1 11.0 - - + -
66A LEU 3.6 2.2 + - - -
67A PRO* 1.3 70.6 - - - +
69A ASP* 1.3 64.9 + - - +
70A GLN* 3.8 13.5 - - + +
71A THR* 4.0 9.6 - - - +
72A ARG* 3.0 11.1 + - - +
90A ASN* 3.0 21.1 + - - +
268A ARG 3.3 25.3 + - - -
269A LYS 3.3 20.6 - - - +
270A GLN 3.9 11.7 - - - -
272A PRO* 3.6 36.8 - - + +
273A ALA 4.9 0.5 + - - -
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Residues in contact with ASP 69 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
47A SER* 2.7 28.3 + - - +
48A THR* 3.1 3.2 + - - -
49A VAL* 2.7 30.7 + - - +
50A ALA* 3.0 34.1 + - - +
51A GLY 4.6 0.5 + - - -
67A PRO 3.5 1.3 + - - +
68A TYR* 1.3 72.0 - - - +
70A GLN* 1.3 71.8 + - - +
71A THR 3.1 1.4 + - - -
72A ARG* 3.5 23.1 + - - +
74A ILE* 5.8 1.9 - - - +
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Residues in contact with GLN 70 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
44A GLY 5.8 1.4 - - - -
46A CYS* 3.6 14.5 - - - +
47A SER* 3.0 44.4 + - - +
68A TYR* 3.2 7.0 - - + +
69A ASP* 1.3 85.2 + - - +
71A THR* 1.3 69.3 + - + +
269A LYS* 6.2 3.6 - - - +
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Residues in contact with THR 71 (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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68A TYR* 3.4 6.3 + - + +
69A ASP 3.1 0.2 - - - -
70A GLN* 1.3 88.5 - - + +
72A ARG* 1.3 66.7 + - - +
90A ASN* 3.0 7.0 + - - -
91A PHE* 2.8 43.4 + - - +
269A LYS 4.8 3.4 - - - +
270A GLN* 2.8 47.1 + - + +
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Residues in contact with ARG 72 (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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50A ALA* 3.3 32.3 - - - +
67A PRO* 4.2 9.2 - - + -
68A TYR 3.0 14.5 + - - +
69A ASP* 3.5 21.8 + - - +
71A THR* 1.3 83.5 - - - +
73A VAL* 1.3 68.3 + - - +
74A ILE* 3.6 28.5 + - + +
85A ASP* 3.0 50.9 + - - -
86A TYR* 4.0 21.3 - - - -
87A ILE 5.4 1.5 + - - +
89A GLY 3.5 6.7 - - - +
90A ASN* 3.4 9.4 - - - +
91A PHE* 3.9 7.2 - - - -
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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