Contacts of the helix formed by residues 164 - 172 (chain E) in PDB entry 1BBR
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 164 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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163E VAL* 1.3 75.1 - - - +
165E ARG* 1.3 72.9 + - - +
166E PRO* 3.2 6.5 - - + -
167E VAL* 2.9 50.8 + - + +
168E CYS* 3.1 5.5 + - - -
185E LYS* 2.9 32.3 + - - -
132H ALA* 3.6 16.5 - - + +
15L ARG* 3.2 30.0 + - - +
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Residues in contact with ARG 165 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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163E VAL 3.5 2.9 + - - +
164E GLU* 1.3 85.3 - - - +
166E PRO* 1.3 71.0 - - + +
168E CYS* 3.2 10.4 + - - +
169E LYS* 2.9 41.2 + - - +
176E ILE* 5.5 1.2 - - - +
130H LEU 5.2 7.1 + - - -
131H HIS* 6.1 0.4 - - - +
132H ALA* 5.1 8.7 - - - +
15L ARG* 5.8 2.4 - - - +
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Residues in contact with PRO 166 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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164E GLU* 3.2 12.1 - - + -
165E ARG* 1.3 108.6 - - + +
167E VAL* 1.3 57.6 + - + +
169E LYS* 3.7 21.1 - - + +
170E ALA* 3.0 29.5 + - - +
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Residues in contact with VAL 167 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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163E VAL* 3.7 17.7 - - + -
164E GLU* 2.9 38.7 + - + +
166E PRO* 1.3 78.2 - - + +
168E CYS* 1.3 56.2 + - - +
170E ALA* 3.2 6.5 + - - +
171E SER* 3.0 29.0 + - - -
185E LYS* 3.9 18.4 - - - +
225E TYR* 4.1 14.8 - - + +
60K PRO 4.5 11.0 - - + -
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Residues in contact with CYS 168 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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163E VAL* 3.8 13.2 - - - -
164E GLU 3.1 17.2 + - - -
165E ARG* 3.2 10.1 + - - +
167E VAL* 1.3 71.6 - - - +
169E LYS* 1.3 69.7 + - - +
171E SER* 2.4 27.1 + - - -
172E THR* 3.5 9.4 + - - +
176E ILE* 5.1 3.8 - - + -
181E PHE* 5.3 0.7 - - - -
182E CYS* 2.0 63.5 - - + -
225E TYR* 4.5 0.2 - - - -
227E PHE* 3.8 11.3 - - + -
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Residues in contact with LYS 169 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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165E ARG* 2.9 20.7 + - - +
166E PRO* 3.7 23.5 - - - +
168E CYS* 1.3 77.1 - - - +
170E ALA* 1.3 56.0 + - - +
172E THR* 3.2 23.2 - - - +
174E ILE 5.0 1.7 - - - +
176E ILE* 4.6 29.1 - - + +
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Residues in contact with ALA 170 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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166E PRO 3.0 20.3 + - - +
167E VAL* 3.2 7.1 + - - +
169E LYS* 1.3 73.3 - - - +
171E SER* 1.3 55.7 + - - +
172E THR 3.2 7.7 + - - +
311G LEU* 5.0 24.3 - - + +
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Residues in contact with SER 171 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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167E VAL 3.0 11.1 + - - -
168E CYS* 2.4 28.8 + - - -
170E ALA* 1.3 74.4 - - - +
172E THR* 1.3 56.2 + - - +
223E GLY 3.6 15.3 - - - +
224E LYS* 2.5 39.0 + - - +
225E TYR* 3.5 27.3 + - - -
227E PHE* 4.2 5.9 - - - -
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Residues in contact with THR 172 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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168E CYS 3.6 11.4 - - - +
169E LYS 3.2 16.4 - - - +
170E ALA 3.2 3.7 - - - +
171E SER* 1.3 84.1 - - - +
173E ARG* 1.3 66.0 + - - +
174E ILE* 3.4 24.3 + - + +
176E ILE* 3.5 33.9 - - + -
215E TRP* 4.0 4.8 - - + -
217E GLU* 2.6 23.9 + - - -
224E LYS* 3.9 2.9 - - - +
227E PHE* 3.9 10.5 - - + -
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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