Contacts of the helix formed by residues 95 - 100 (chain A) in PDB entry 3P8P
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 ALA 95 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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30A LEU* 3.6 30.3 - - + -
93A PRO* 3.0 19.2 - - - +
94A GLY* 1.3 78.0 - - - +
96A PRO* 1.3 70.6 - - + +
97A SER 4.7 0.2 - - - +
98A ARG* 3.4 20.2 + - + -
99A ARG* 3.6 2.9 + - - -
145A ARG* 3.8 23.2 - - - +
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Residues in contact with PRO 96 (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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94A GLY 3.7 7.0 - - - +
95A ALA* 1.3 80.8 - - + +
97A SER* 1.3 58.4 + - - +
98A ARG 2.9 11.5 + - - -
99A ARG* 3.0 46.0 + - + +
100A LYS* 5.9 1.6 - - - +
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Residues in contact with SER 97 (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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30A LEU* 3.5 35.5 - - - +
70A SER 5.0 3.5 - - - +
71A LEU* 4.5 18.0 - - - +
72A PRO* 5.4 7.4 - - - +
73A ASP* 5.0 0.9 + - - -
96A PRO* 1.3 77.1 - - - +
98A ARG* 1.3 60.5 + - - +
99A ARG 3.6 0.4 - - - -
100A LYS* 5.2 3.6 + - - +
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Residues in contact with ARG 98 (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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30A LEU* 4.3 1.1 - - + -
71A LEU* 5.8 0.2 - - - -
73A ASP* 3.4 43.7 + - + +
76A PHE* 3.1 26.5 + - - +
79A ASP* 3.1 32.2 + - - +
80A VAL* 4.4 1.6 - - - +
93A PRO* 3.9 17.9 - - + +
95A ALA* 3.7 28.0 - - + +
96A PRO 2.9 1.4 + - - -
97A SER* 1.3 85.2 - - - +
99A ARG* 1.3 61.3 + - - +
100A LYS 3.3 2.7 - - - -
101A GLU* 3.0 53.2 + - - +
127A ASP* 4.3 1.4 + - - -
145A ARG* 4.2 4.4 - - - +
286A LN6 2.8 38.9 + - - +
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Residues in contact with ARG 99 (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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92A ARG* 3.4 51.1 - - - +
93A PRO* 2.8 45.7 + - - -
94A GLY 4.0 11.1 + - - -
95A ALA 3.6 1.6 + - - -
96A PRO* 3.0 41.2 + - - +
97A SER 3.6 0.6 - - - -
98A ARG* 1.3 77.2 - - - +
100A LYS* 1.3 62.0 + - + +
101A GLU 3.1 4.8 + - - -
102A VAL* 3.4 22.9 + - - +
103A ASP* 5.0 0.5 - - - +
125A THR* 4.1 6.1 - - - +
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Residues in contact with LYS 100 (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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19A ARG* 5.3 0.3 + - - -
71A LEU* 3.6 30.8 - - + +
96A PRO 5.9 1.3 - - - +
97A SER 5.2 3.6 + - - +
98A ARG 3.3 1.6 + - - -
99A ARG* 1.3 78.9 - - + +
101A GLU* 1.3 59.1 + - - +
102A VAL 3.1 6.3 - - - -
103A ASP* 3.1 34.9 + - - +
104A MET 4.7 0.5 + - - -
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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