Contacts of the helix formed by residues 144 - 160 (chain A) in PDB entry 1UN0
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 144 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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101A MET* 3.9 31.6 - - + -
105A LEU* 6.2 0.2 - - + -
143A GLN* 1.3 101.1 - - + +
145A GLU* 1.3 64.8 + - - +
146A MET* 4.1 4.7 - - + +
147A LEU* 4.0 24.7 - - + +
148A GLN* 3.2 22.5 + - - +
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Residues in contact with GLU 145 (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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143A GLN 3.7 0.6 + - - -
144A PRO* 1.3 73.4 - - - +
146A MET* 1.3 61.5 + - + +
148A GLN* 3.4 18.4 - - - +
149A LEU* 3.3 20.0 + - + +
184A THR 4.9 0.7 - - - +
185A GLY* 3.8 7.0 - - - -
186A SER* 3.0 35.9 + - - +
189A VAL* 3.6 18.3 - - + +
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Residues in contact with MET 146 (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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105A LEU* 3.5 21.3 - - + +
144A PRO* 3.2 5.0 - - + +
145A GLU* 1.3 81.1 - - + +
147A LEU* 1.3 59.5 - - - +
149A LEU* 3.9 23.5 - - + +
150A GLU* 3.5 29.4 + - + +
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Residues in contact with LEU 147 (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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101A MET* 5.2 4.0 - - - +
104A GLN* 3.9 15.5 - - + +
105A LEU* 3.5 42.6 - - + +
108A THR* 3.9 5.4 - - - +
138A PHE* 3.8 38.4 - - + +
143A GLN* 3.5 26.2 - - + +
144A PRO* 3.5 25.5 + - + +
145A GLU 3.3 0.2 - - - -
146A MET* 1.3 75.1 - - - +
148A GLN* 1.3 66.7 + - - +
149A LEU 3.1 1.1 - - - -
150A GLU* 3.0 3.8 + - - +
151A ALA* 2.9 23.0 + - - +
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Residues in contact with GLN 148 (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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138A PHE 3.2 21.6 + - - +
139A MET* 3.4 13.5 + - - +
140A ARG 2.5 34.4 + - - +
141A GLU* 3.8 10.7 + - - +
143A GLN* 3.8 8.8 - - + +
144A PRO 3.2 22.3 + - - +
145A GLU* 3.4 24.9 - - - +
147A LEU* 1.3 78.0 - - - +
149A LEU* 1.3 62.0 + - - +
151A ALA* 3.9 0.5 - - - +
152A ALA* 3.0 28.4 + - - +
181A LEU* 3.8 24.0 - - + +
184A THR* 4.8 7.0 + - - -
185A GLY* 5.5 0.2 - - - -
189A VAL* 5.3 2.9 - - + -
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Residues in contact with LEU 149 (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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145A GLU 3.3 15.3 + - - +
146A MET* 3.9 27.4 - - + +
147A LEU 3.1 0.8 - - - -
148A GLN* 1.3 79.8 - - - +
150A GLU* 1.3 65.8 + - + +
152A ALA* 3.8 3.9 - - + +
153A TRP* 2.9 47.7 + - + +
188A GLU* 4.4 22.7 - - + +
189A VAL* 4.0 36.3 - - + +
192A GLN* 4.5 12.8 - - + -
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Residues in contact with GLU 150 (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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105A LEU* 4.4 4.5 - - + -
108A THR* 3.5 22.0 - - + +
109A VAL* 3.8 24.3 - - + +
112A ARG* 2.8 54.3 + - - +
146A MET* 3.5 20.9 + - + +
147A LEU 3.0 6.0 + - - +
149A LEU* 1.3 84.7 - - + +
151A ALA* 1.3 65.0 + - - +
153A TRP* 3.8 13.0 - - - +
154A ALA* 3.0 24.8 + - - +
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Residues in contact with ALA 151 (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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108A THR* 3.4 13.4 - - + +
135A LEU* 3.4 16.9 - - - +
138A PHE* 3.4 34.3 - - + +
139A MET* 3.9 9.2 - - + -
147A LEU 2.9 11.7 + - - +
148A GLN 3.9 0.7 - - - +
150A GLU* 1.3 76.9 - - - +
152A ALA* 1.3 59.7 + - - +
154A ALA* 3.3 4.3 + - - +
155A LEU* 2.9 33.5 + - - +
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Residues in contact with ALA 152 (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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139A MET* 3.4 25.9 - - + -
148A GLN 3.0 19.6 + - - +
149A LEU* 3.8 4.7 - - - +
151A ALA* 1.3 78.9 - - - +
153A TRP* 1.3 55.6 + - - +
155A LEU* 3.6 2.1 + - - +
156A THR* 3.0 32.8 + - - -
178A PHE* 3.9 9.9 - - + -
181A LEU* 4.2 11.2 - - + -
189A VAL* 5.2 3.6 - - + -
192A GLN* 4.7 11.2 - - + -
193A ALA 5.6 0.7 - - - +
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Residues in contact with TRP 153 (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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112A ARG* 3.7 50.3 - - + -
116A SER* 4.3 6.1 + - - -
149A LEU* 2.9 34.0 + - + +
150A GLU* 3.8 14.8 - - - +
152A ALA* 1.3 72.9 - - - +
154A ALA* 1.3 65.9 + - - +
156A THR* 3.3 1.4 + - - -
157A ASN* 3.1 40.3 + - - +
192A GLN* 3.3 38.7 + - + +
118B GLU* 4.9 11.2 + - + +
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Residues in contact with ALA 154 (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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108A THR 4.8 1.8 - - - +
111A PHE* 4.9 1.3 - - + -
112A ARG* 4.0 20.3 - - - +
115A LEU* 3.5 28.1 - - + +
135A LEU* 4.3 17.0 - - + -
150A GLU 3.0 18.1 + - - +
151A ALA* 3.6 5.8 - - - +
153A TRP* 1.3 76.7 - - - +
155A LEU* 1.3 63.6 + - - +
156A THR 3.2 0.5 + - - -
157A ASN* 3.2 15.8 + - - +
158A ILE* 3.3 10.1 + - - +
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Residues in contact with LEU 155 (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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132A VAL* 3.9 33.7 - - + -
135A LEU* 4.0 26.5 - - + +
136A VAL* 3.8 17.9 - - + -
139A MET* 3.7 35.0 - - + -
151A ALA 2.9 16.1 + - - +
152A ALA 3.8 4.9 - - - +
154A ALA* 1.3 77.2 - - - +
156A THR* 1.3 57.5 + - - +
158A ILE* 3.1 8.5 + - + +
159A ALA* 2.8 29.2 + - - +
169A VAL* 3.9 16.9 - - + +
174A ALA* 4.6 2.2 - - + -
178A PHE* 3.9 12.3 - - + -
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Residues in contact with THR 156 (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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152A ALA 3.0 21.4 + - - -
153A TRP 3.5 1.3 - - - +
154A ALA 3.1 0.4 - - - -
155A LEU* 1.3 72.9 - - - +
157A ASN* 1.3 64.7 - - - +
159A ALA* 3.1 7.7 + - - +
160A SER* 2.9 30.7 + - - -
178A PHE* 4.1 1.2 - - - -
192A GLN* 3.3 34.8 + - - +
195A TRP* 3.4 30.7 - - + +
196A ALA* 3.2 26.7 - - - +
118B GLU* 6.2 0.9 - - + -
119B HIS* 4.6 0.7 - - + -
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Residues in contact with ASN 157 (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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112A ARG 3.8 5.7 + - - -
115A LEU* 3.2 30.8 + - + +
116A SER* 2.6 30.9 + - - +
123A ILE* 3.6 20.3 - - - +
153A TRP* 3.1 23.8 + - - +
154A ALA 3.4 11.0 - - - +
156A THR* 1.3 83.2 - - - +
158A ILE* 1.3 58.7 + - - +
160A SER* 3.6 14.8 + - - -
161A GLY 4.0 1.0 + - - -
118B GLU* 3.7 27.2 - - - +
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Residues in contact with ILE 158 (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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115A LEU* 4.1 20.2 - - + -
123A ILE* 3.8 23.7 - - + +
126A VAL* 4.5 13.2 - - + -
127A ILE* 4.0 14.8 - - + -
132A VAL* 3.8 25.1 - - + -
135A LEU* 4.7 4.5 - - + -
154A ALA 3.3 13.0 + - - +
155A LEU* 3.1 15.9 + - + +
156A THR 3.0 0.6 - - - -
157A ASN* 1.3 73.5 - - - +
159A ALA* 1.3 58.0 + - - +
160A SER 3.1 4.0 - - - -
161A GLY* 3.1 16.6 + - - -
165A GLN* 3.1 35.0 - - - +
168A VAL* 5.3 0.2 - - + -
169A VAL* 3.4 12.6 - - + +
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Residues in contact with ALA 159 (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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155A LEU 2.8 16.0 + - - +
156A THR* 3.7 7.4 - - - +
158A ILE* 1.3 74.8 - - - +
160A SER* 1.3 56.5 + - - +
161A GLY 3.3 1.7 - - - +
165A GLN 4.2 0.9 - - - -
166A THR* 2.7 32.9 + - - +
169A VAL* 4.2 20.0 - - + -
196A ALA* 4.8 12.1 - - + +
199A ASN* 3.5 14.3 - - - +
200A VAL* 4.6 15.3 - - + -
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Residues in contact with SER 160 (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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156A THR* 2.9 16.9 + - - +
157A ASN* 3.6 13.2 + - - -
158A ILE 3.1 0.6 - - - -
159A ALA* 1.3 77.7 - - - +
161A GLY* 1.3 62.4 + - - +
195A TRP* 4.1 14.6 + - - -
199A ASN* 3.7 31.3 - - - +
118B GLU* 4.9 6.1 + - - -
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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