Contacts of the helix formed by residues 137 - 141 (chain A) in PDB entry 5CVE
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 VAL 137 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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68A CYS 3.9 15.0 - - - +
69A GLY* 4.1 6.1 - - - -
119A LEU* 4.0 15.8 - - + +
134A ILE* 3.6 27.6 - - + -
135A GLN 3.9 6.3 - - - +
136A TRP* 1.3 78.2 - - - +
138A ILE* 1.3 71.5 + - - +
139A GLY 3.1 4.0 - - - +
140A HIS* 2.9 23.4 + - + +
141A LEU* 4.2 4.7 + - + +
167A ASP* 2.9 1.2 + - - -
301A SAH 3.5 50.9 - - + +
1D PBE 5.5 0.2 - - - -
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Residues in contact with ILE 138 (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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119A LEU* 6.2 0.9 - - - -
134A ILE* 3.8 25.6 - - + -
137A VAL* 1.3 78.4 - - - +
139A GLY* 1.3 62.8 + - - +
140A HIS 3.0 1.4 + - - -
141A LEU* 3.2 16.1 + - - +
146A LEU* 4.1 35.2 - - + +
165A ILE* 4.0 26.7 - - + -
167A ASP* 2.9 33.1 + - + +
168A ASN 5.2 2.7 - - - +
169A MET* 4.3 12.8 - - + -
185A ARG* 3.0 22.9 + - - +
190A VAL* 4.4 17.7 - - + -
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Residues in contact with GLY 139 (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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12A PHE* 3.6 4.2 - - - -
137A VAL 3.1 1.8 + - - -
138A ILE* 1.3 82.0 - - - +
140A HIS* 1.3 58.9 + - - +
141A LEU 3.3 0.8 + - - -
167A ASP* 4.4 3.8 + - - -
182A SER* 3.2 10.7 - - - -
183A VAL* 2.8 52.4 + - - +
185A ARG* 3.9 7.9 - - - -
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Residues in contact with HIS 140 (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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12A PHE* 3.3 9.7 - - - -
13A TYR* 3.1 25.5 - - - -
16A ALA* 3.5 13.6 - - + +
20A TRP* 2.9 30.2 + + - -
136A TRP 5.3 0.7 - - - -
137A VAL* 2.9 23.2 + - + +
139A GLY* 1.3 78.7 - - - +
141A LEU* 1.3 60.3 - - + +
180A ASP* 3.1 32.3 + - - -
181A SER 3.0 18.0 + - - -
182A SER* 3.6 13.5 - - - -
301A SAH 3.5 40.6 - + + +
1D PBE 5.8 4.8 - - - -
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Residues in contact with LEU 141 (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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2A THR* 4.6 2.1 - - - +
12A PHE* 4.2 3.9 - - - -
13A TYR* 3.5 9.9 - - + +
119A LEU* 3.9 28.9 - - + -
120A GLN* 3.8 14.6 - - + +
137A VAL 4.7 5.2 - - - +
138A ILE* 3.2 12.4 + - - +
139A GLY 4.2 3.6 - - - +
140A HIS* 1.3 90.7 - - + +
142A THR* 1.3 62.0 + - - +
145A HIS* 3.9 24.7 - - + +
146A LEU* 3.9 19.5 - - + +
149A PHE* 4.1 10.3 - - + -
183A VAL* 4.6 0.3 - - - +
185A ARG* 2.7 27.9 + - - -
301A SAH 3.7 22.7 - - + +
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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