Contacts of the helix formed by residues 150 - 155 (chain D) in PDB entry 3GXM
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 PRO 150 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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91A LEU* 6.5 0.2 - - + -
131D ARG* 4.0 13.7 - - - +
133D TYR* 3.4 33.2 - - + -
134D THR 5.2 2.2 - - - +
135D TYR* 3.7 10.1 - - + -
148D SER* 3.6 8.7 - - - +
149D LEU* 1.3 87.2 - - - +
151D GLU* 1.3 66.0 + - - +
152D GLU* 3.1 15.9 - - + +
153D ASP* 3.0 27.0 + - - +
154D THR* 3.1 10.9 + - - -
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Residues in contact with GLU 151 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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91A LEU* 4.9 9.8 - - + +
130A ILE* 3.8 19.4 - - + +
131A ARG* 3.5 12.5 + - - -
151A GLU* 4.0 25.1 - - - +
152A GLU* 2.7 35.1 + - - +
156A LEU* 3.6 26.3 - - - +
150D PRO* 1.3 72.3 - - - +
152D GLU* 1.3 61.0 + - - +
154D THR* 3.5 10.1 + - - +
155D LYS* 2.5 47.4 + - + +
156D LEU* 3.5 1.1 + - - +
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Residues in contact with GLU 152 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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130A ILE* 3.8 21.0 - - + +
87D ASP* 3.6 18.1 - - + +
130D ILE* 4.4 7.1 + - + +
131D ARG* 2.9 51.0 + - - +
133D TYR* 3.4 31.3 - - + +
150D PRO* 3.1 9.2 + - + +
151D GLU* 1.3 78.1 + - - +
153D ASP* 1.3 58.5 + - - +
156D LEU* 3.4 24.2 - - + +
157D LYS* 3.0 31.9 + - + +
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Residues in contact with ASP 153 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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133D TYR* 4.4 4.9 + - - -
135D TYR* 3.0 42.2 + - - -
149D LEU* 3.7 14.1 - - + -
150D PRO* 3.0 16.4 + - - +
152D GLU* 1.3 79.5 - - - +
154D THR* 1.3 62.3 + - - +
157D LYS* 3.2 21.6 + - - -
158D ILE* 2.8 36.5 + - + +
220D TYR* 2.5 30.8 + - - +
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Residues in contact with THR 154 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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151A GLU* 5.1 3.5 + - - -
149D LEU* 4.1 27.2 + - + +
150D PRO 3.1 11.5 + - - +
151D GLU* 3.5 10.0 + - - +
153D ASP* 1.3 79.3 - - - +
155D LYS* 1.3 67.7 + - - +
158D ILE* 4.4 7.0 - - + +
159D PRO* 3.5 16.2 - - - +
223D HIS* 3.7 32.7 - - + +
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Residues in contact with LYS 155 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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131A ARG* 4.1 41.2 + - - +
150A PRO* 5.6 1.8 - - - -
151A GLU* 3.2 39.2 + - - +
94D LEU* 4.2 6.6 - - - +
151D GLU* 2.5 44.6 + - + +
154D THR* 1.3 79.1 + - - +
156D LEU* 1.3 62.2 + - + +
159D PRO* 3.3 19.0 - - + +
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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