Contacts of the helix formed by residues 1071 - 1078 (chain A) in PDB entry 1Y6B
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 ALA1071 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1069A TRP 3.7 0.8 + - - -
1070A MET* 1.3 76.3 - - - +
1072A PRO* 1.4 74.7 - - + +
1073A GLU* 3.3 28.9 - - - +
1074A THR* 3.0 15.9 + - - +
1075A ILE* 3.2 9.7 + - - +
1084A SER* 3.7 21.2 + - - -
1087A TRP* 3.7 24.3 - - + -
1088A SER* 5.1 0.2 + - - -
1148A ARG* 4.0 1.1 - - - +
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Residues in contact with PRO1072 (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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1070A MET 3.7 0.6 - - - -
1071A ALA* 1.4 84.5 - - + +
1073A GLU* 1.3 61.3 + - - +
1074A THR 3.2 0.2 + - - -
1075A ILE* 3.4 10.8 + - + +
1076A PHE* 2.9 52.5 + - + -
1087A TRP* 3.4 42.6 - - + -
1117A LEU* 4.2 17.0 - - + +
1118A LYS* 4.9 11.7 - - + -
1122A ARG* 5.4 0.9 - - - +
1143A GLY* 5.5 7.2 - - - +
1148A ARG* 3.9 2.9 - - - +
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Residues in contact with GLU1073 (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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1071A ALA* 3.3 12.0 - - - +
1072A PRO* 1.3 75.1 - - - +
1074A THR* 1.3 58.9 + - - +
1076A PHE* 4.8 1.6 - - - -
1077A ASP* 2.9 48.6 + - - +
1079A VAL* 3.4 28.0 + - + +
1081A THR* 4.7 1.4 + - - -
1084A SER* 3.4 16.1 + - - -
1143A GLY 4.8 1.4 - - - +
1145A PRO* 3.6 23.3 - - + +
1148A ARG* 3.0 42.1 + - - -
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Residues in contact with THR1074 (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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1070A MET* 3.7 16.6 - - + +
1071A ALA* 3.0 15.1 + - - +
1073A GLU* 1.3 74.8 - - - +
1075A ILE* 1.3 67.4 + - - +
1078A ARG* 3.0 23.4 + - - +
1079A VAL 2.3 32.2 + - - +
1080A TYR* 3.5 43.0 - - + -
1084A SER* 3.5 21.7 + - - -
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Residues in contact with ILE1075 (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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1067A LEU* 3.5 35.4 - - + +
1070A MET* 3.8 30.2 - - + +
1071A ALA 3.6 7.6 - - - +
1072A PRO* 3.5 8.3 - - + +
1074A THR* 1.3 81.4 - - - +
1076A PHE* 1.3 74.4 + - + +
1078A ARG* 4.5 3.8 + - - +
1113A PHE* 4.7 2.2 - - + -
1114A CYS* 3.8 27.8 - - + -
1117A LEU* 4.0 20.9 - - + -
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Residues in contact with PHE1076 (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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1072A PRO* 2.9 40.3 + - + +
1073A GLU* 4.8 0.9 - - - -
1075A ILE* 1.3 84.6 - - + +
1077A ASP* 1.3 70.1 + - - +
1078A ARG* 3.6 1.1 - - - -
1111A GLU* 5.4 5.6 - - - -
1114A CYS* 3.4 45.1 - - + -
1115A ARG* 4.6 2.2 - - - -
1117A LEU* 5.7 0.4 - - + -
1118A LYS* 3.6 46.4 - - + +
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Residues in contact with ASP1077 (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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1073A GLU* 2.9 31.3 + - - +
1076A PHE* 1.3 82.4 - - - +
1078A ARG* 1.3 66.3 + - - +
1079A VAL* 3.0 19.6 + - + +
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Residues in contact with ARG1078 (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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1074A THR* 3.0 21.4 + - - +
1075A ILE 5.3 3.1 - - - +
1076A PHE 3.6 1.7 - - - +
1077A ASP* 1.3 78.6 - - - +
1079A VAL* 1.3 61.0 + - - +
1080A TYR* 3.5 17.6 + - - -
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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
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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