Contacts of the helix formed by residues 175 - 179 (chain H) in PDB entry 6D6Q
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 SER 175 (chain H).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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73H LYS* 4.6 15.9 + - - +
74H THR 4.4 3.6 + - - -
174H VAL* 1.3 89.2 - - - +
176H PRO* 1.3 75.9 - - - +
177H SER* 3.3 17.6 + - - -
178H LEU* 3.4 32.0 + - - +
179H VAL* 4.9 0.7 - - - +
201H GLY* 4.0 0.4 - - - -
245H VAL* 5.0 2.2 - - - +
248H ARG* 4.5 10.1 - - - -
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Residues in contact with PRO 176 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
74H THR* 3.3 28.9 - - - +
75H ARG* 4.4 1.1 - - - -
76H TYR* 4.0 22.9 - - + +
101H ASN* 5.1 7.6 - - + +
174H VAL 3.8 3.1 - - - +
175H SER* 1.3 93.0 - - - +
177H SER* 1.3 54.9 + - - +
178H LEU 3.1 4.6 + - - -
179H VAL* 3.5 19.7 + - + +
199H ASN 3.9 7.1 - - - +
200H ASN* 3.8 14.8 - - - +
201H GLY 3.8 21.5 - - - +
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Residues in contact with SER 177 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
242B LEU* 4.5 4.4 - - - +
70H LYS* 5.7 6.0 + - - -
71H ALA 4.9 6.5 - - - -
72H LEU* 2.7 33.4 + - - -
73H LYS* 4.2 2.8 - - - -
74H THR* 5.2 7.9 - - - -
175H SER* 3.2 12.3 + - - -
176H PRO* 1.3 79.1 - - - +
178H LEU* 1.3 69.5 + - - +
179H VAL 3.7 2.5 - - - -
248H ARG* 5.6 0.3 + - - -
250H MET* 3.8 15.3 - - - +
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Residues in contact with LEU 178 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
242B LEU* 3.7 25.4 - - + -
72H LEU 5.9 0.7 - - - +
174H VAL* 5.2 1.7 - - + +
175H SER* 3.7 19.1 - - - +
176H PRO 3.1 2.2 - - - -
177H SER* 1.3 91.0 - - - +
179H VAL* 1.3 63.0 + - - +
245H VAL* 3.8 36.3 - - + +
248H ARG* 3.7 33.2 - - - +
249H MET 4.1 21.3 - - - +
250H MET* 3.9 11.0 - - - -
251H LEU* 3.0 28.6 + - - +
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Residues in contact with VAL 179 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
174H VAL* 4.9 2.2 - - + -
175H SER 4.9 5.2 - - - +
176H PRO 3.5 19.6 - - - +
177H SER* 3.7 0.7 - - - -
178H LEU* 1.3 84.6 - - - +
180H LYS* 1.3 68.2 + - - +
181H ARG* 3.2 9.9 + - - +
185H HIS* 5.9 3.4 - - + +
197H LEU* 5.1 10.1 - - + +
198H GLY 3.5 25.6 - - - +
199H ASN* 4.3 11.7 - - - +
200H ASN 4.2 7.6 - - - +
203H ILE* 4.7 17.7 - - + -
250H MET* 4.1 3.8 - - - +
251H LEU* 3.8 19.5 - - + +
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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