Contacts of the helix formed by residues 42 - 47 (chain T) in PDB entry 1G3I
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 GLU 42 (chain T).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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41T GLN* 1.3 78.7 - - - +
43T PRO* 1.3 76.8 - - + +
45T ARG* 3.0 38.8 + - - +
46T HIS* 2.8 25.1 + - + +
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Residues in contact with PRO 43 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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41T GLN* 3.8 21.1 - - + +
42T GLU* 1.3 98.6 - - + +
44T LEU* 1.3 62.9 + - + +
45T ARG 2.5 15.6 + - - -
46T HIS* 3.1 20.4 + - + -
47T GLU* 3.3 20.5 - - - +
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Residues in contact with LEU 44 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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40T LEU* 3.0 39.3 - - + +
41T GLN* 4.4 18.8 + - + +
42T GLU 3.7 0.6 - - - -
43T PRO* 1.3 82.3 - - + +
45T ARG* 1.3 57.2 + - - +
47T GLU* 4.8 7.2 - - - +
48T VAL* 4.4 9.9 - - - +
350U ALA* 4.1 31.6 - - + +
354U GLU* 5.5 11.7 - - + +
355U GLN* 5.7 7.2 - - + +
358U ALA* 4.6 19.7 - - + -
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Residues in contact with ARG 45 (chain T).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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37T ARG* 3.4 52.0 + - - +
38T MET* 3.8 27.4 - - - +
40T LEU 3.6 11.0 - - - +
41T GLN 2.9 25.7 + - - +
42T GLU* 3.0 29.7 + - - +
43T PRO 2.5 10.1 + - - -
44T LEU* 1.3 74.7 - - - +
46T HIS* 1.3 73.7 + - - +
47T GLU 3.0 4.2 - - - +
48T VAL* 3.0 25.5 - - - +
250T GLN* 5.0 1.4 + - - -
302T HIS* 3.7 2.5 + - - -
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Residues in contact with HIS 46 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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37T ARG* 4.5 0.9 - - - +
42T GLU* 2.8 32.2 + - + +
43T PRO* 3.1 23.1 + - + -
45T ARG* 1.3 91.2 - - - +
47T GLU* 1.3 72.9 + - + +
49T THR* 5.5 1.2 + - - -
299T LYS* 4.7 15.8 + - - +
301T ASP* 5.4 3.3 - - - +
302T HIS* 3.2 30.3 + - - +
69U ARG* 6.0 0.2 + - - -
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Residues in contact with GLU 47 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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43T PRO* 3.3 27.3 - - - +
44T LEU* 4.8 3.8 - - - +
45T ARG 3.0 3.3 + - - -
46T HIS* 1.3 95.0 + - + +
48T VAL* 1.3 62.1 + - - +
49T THR* 3.9 2.0 - - - -
16U HIS* 4.6 8.1 + - - -
69U ARG* 3.0 29.2 + - - +
349U HIS* 4.5 4.7 - - - +
350U ALA* 3.4 29.1 - - + +
355U GLN* 3.4 14.3 + - - +
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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