Contacts of the helix formed by residues 1209 - 1213 (chain C) in PDB entry 1I7M
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 ILE1209 (chain C).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1192C PHE* 4.0 10.1 - - + -
1204C THR* 3.3 9.8 + - + +
1207C SER* 3.1 24.7 + - - +
1208C GLY* 1.3 76.0 - - - +
1210C ARG* 1.3 67.4 + - - +
1212C LEU* 3.2 13.9 + - - +
1228C TYR* 3.7 38.4 - - + +
1230C MSE 4.4 6.1 - - + -
1240C TRP* 3.2 23.3 - - + -
1242C ILE* 3.6 22.2 - - + -
1244C ILE* 4.1 2.2 - - + -
1274C VAL* 4.3 2.9 - - + -
1275C PHE* 3.7 36.8 - - + -
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Residues in contact with ARG1210 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1204C THR* 2.8 28.3 + - + +
1205C ARG* 3.8 45.8 + - - +
1208C GLY 3.2 0.2 - - - -
1209C ILE* 1.3 78.9 - - - +
1211C ASP* 1.3 90.7 + - - +
1212C LEU 3.3 0.9 + - - -
1213C ILE 4.1 6.8 + - - +
1214C PRO* 4.6 2.4 - - - +
1218C ILE* 4.1 19.7 - - + +
1240C TRP* 3.9 11.3 - - - -
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Residues in contact with ASP1211 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1205C ARG 5.4 3.0 - - - +
1208C GLY* 3.3 11.9 + - - +
1209C ILE 3.2 0.6 - - - -
1210C ARG* 1.3 113.7 + - - +
1212C LEU* 1.3 64.3 + - - +
1213C ILE 3.3 1.8 - - - -
1214C PRO* 3.5 23.7 - - + +
1270C LYS* 5.6 3.5 - - - +
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Residues in contact with LEU1212 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1208C GLY 3.7 7.8 + - - +
1209C ILE* 3.2 20.3 + - - +
1211C ASP* 1.3 78.2 - - - +
1213C ILE* 1.3 67.4 + - + +
1214C PRO* 3.6 3.9 - - - +
1240C TRP* 4.0 7.0 - - + -
1242C ILE* 3.9 27.6 - - + -
1255C PHE* 4.2 5.4 - - + -
1267C LEU* 4.0 11.5 - - + +
1270C LYS* 4.1 34.5 + - + +
1271C VAL* 3.7 27.6 - - + +
1274C VAL* 3.7 25.1 - - + -
1275C PHE* 4.5 7.9 - - + -
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Residues in contact with ILE1213 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1210C ARG 4.3 3.2 - - - +
1212C LEU* 1.3 84.2 - - - +
1214C PRO* 1.3 57.7 - - + +
1215C GLY 3.8 0.2 + - - -
1216C SER* 2.6 37.4 + - - +
1234C LYS* 4.1 21.3 - - + -
1238C THR* 4.9 1.3 - - + -
1240C TRP* 3.4 41.8 - - + +
1255C PHE* 3.9 18.4 - - + -
1257C THR* 3.6 23.8 - - - +
1259C LEU* 3.8 31.9 - - + -
1267C LEU* 4.3 7.4 - - + -
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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