Contacts of the helix formed by residues 147 - 153 (chain B) in PDB entry 4LDD
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 LEU 147 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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73B PHE* 3.6 33.7 - - + -
98B LEU* 3.9 15.7 - - + +
99B GLY* 3.5 29.4 - - - -
100B VAL 3.5 26.0 - - - +
101B ALA* 4.2 2.7 - - + -
111B THR* 4.3 0.7 - - + -
115B ILE* 4.3 13.9 - - + -
145B HIS* 3.0 33.3 + - + +
146B PRO* 1.3 77.7 - - - +
148B ARG* 1.3 60.7 + - - +
149B LEU* 3.3 2.7 - - + +
150B LEU* 3.2 14.0 + - + +
151B ARG* 2.9 24.3 + - - -
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Residues in contact with ARG 148 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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98B LEU 4.9 2.2 + - - +
146B PRO 3.8 3.8 + - - -
147B LEU* 1.3 72.0 - - - +
149B LEU* 1.3 56.5 + - - +
151B ARG* 3.4 26.4 - - - +
152B ILE* 2.9 58.0 + - + +
154B ASN* 3.2 21.0 + - - +
155B GLN* 3.7 31.8 + - - +
156B ALA 5.2 1.3 - - - +
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Residues in contact with LEU 149 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
75B LEU* 4.1 10.3 - - + -
98B LEU* 3.6 35.7 - - + -
120B TYR* 3.9 20.2 - - + +
135B VAL* 3.4 38.6 - - + +
137B ARG* 3.5 25.6 - - + +
147B LEU* 3.3 2.2 - - + -
148B ARG* 1.3 78.2 - - - +
150B LEU* 1.3 62.1 + - + +
153B GLY* 3.1 26.5 + - - -
154B ASN* 3.6 16.6 - - - -
155B GLN* 3.2 16.4 + - + +
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Residues in contact with LEU 150 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
98B LEU* 6.1 1.8 - - + -
111B THR* 4.0 6.1 - - + -
114B ALA* 4.0 17.7 - - + +
115B ILE* 3.8 33.7 - - + -
120B TYR* 4.2 4.0 - - + +
137B ARG* 3.4 29.9 + - - +
141B GLY* 3.3 6.9 - - - -
142B ILE* 2.6 37.9 + - + +
145B HIS* 3.4 42.4 - - + +
147B LEU* 3.2 16.6 + - + +
148B ARG 3.2 0.2 - - - -
149B LEU* 1.3 81.6 - - + +
151B ARG* 1.3 58.8 + - - +
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Residues in contact with ARG 151 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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141B GLY* 3.8 10.9 - - - -
142B ILE 3.3 13.3 + - - +
143B PRO* 4.9 1.3 - - + +
144B ASP* 3.9 14.6 - - - +
145B HIS* 3.2 34.5 + - - +
146B PRO* 3.7 16.4 + - - +
147B LEU 2.9 15.5 + - - +
148B ARG* 3.4 39.6 - - - +
150B LEU* 1.3 80.7 - - - +
152B ILE* 1.3 78.2 + - + +
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Residues in contact with ILE 152 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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141B GLY* 5.2 3.8 - - - -
148B ARG* 2.9 40.6 + - + +
151B ARG* 1.3 105.1 - - + +
153B GLY* 1.3 61.6 + - - +
154B ASN* 3.2 48.5 + - - +
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Residues in contact with GLY 153 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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136B ASN* 3.3 2.1 - - - +
137B ARG* 2.4 51.1 + - - +
141B GLY* 5.4 4.5 - - - -
149B LEU 3.1 18.7 + - - -
150B LEU 4.4 1.9 + - - -
151B ARG 3.7 0.6 - - - -
152B ILE* 1.3 78.8 - - - +
154B ASN* 1.3 60.7 + - - +
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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