Contacts of the helix formed by residues 145 - 161 (chain A) in PDB entry 2EZT
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 THR 145 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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141A VAL 5.7 0.2 + - - -
142A ASN* 2.9 34.3 + - + +
144A ALA* 1.3 77.7 - - + +
146A LEU* 1.3 65.1 + - - +
147A PRO 3.4 2.0 - - - -
148A HIS* 3.0 23.6 + - + +
149A VAL* 3.0 23.7 + - - +
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Residues in contact with LEU 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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13A ALA* 4.6 7.6 - - + -
17A VAL* 3.6 20.6 - - + -
40A ILE* 5.4 0.2 - - + -
140A ALA* 3.8 25.6 - - + -
142A ASN 3.5 13.6 + - - +
143A ALA 3.2 13.6 + - - +
145A THR* 1.3 75.9 - - - +
147A PRO* 1.4 66.6 - - + +
149A VAL* 3.2 7.0 + - + +
150A ILE* 3.0 40.3 + - + +
166A VAL* 4.6 2.2 - - + -
168A ILE* 4.0 29.6 - - + -
172A LEU* 4.4 11.4 - - + -
173A PRO* 4.2 15.9 - - + -
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Residues in contact with PRO 147 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
13A ALA 4.4 4.7 - - - +
16A ALA* 3.6 28.0 - - + -
17A VAL* 4.3 8.1 - - + +
20A VAL* 3.9 23.8 - - + +
143A ALA 3.5 12.6 - - - +
144A ALA 3.6 7.6 - - - +
145A THR 3.6 3.4 - - - -
146A LEU* 1.4 90.4 - - + +
148A HIS* 1.3 56.9 + - - +
150A ILE* 3.4 2.9 + - + +
151A ASP* 2.9 29.0 + - - +
177A ILE* 3.8 6.5 - - + -
182A TRP* 3.8 26.5 - - + -
183A TYR 5.0 2.0 - - - +
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Residues in contact with HIS 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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136A TYR* 6.0 0.2 - - - -
144A ALA 5.7 0.2 - - - +
145A THR* 3.0 18.4 + - + +
147A PRO* 1.3 78.1 - - - +
149A VAL* 1.3 63.6 + - - +
151A ASP* 3.2 8.7 + - - +
152A GLU* 2.6 61.6 + - + +
155A ARG* 4.1 6.1 + - - -
183A TYR* 4.8 18.1 + + + -
291B GLU* 3.9 18.5 + - + -
314B LYS* 3.7 28.0 + - - -
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Residues in contact with VAL 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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136A TYR* 4.0 9.0 - - - +
138A VAL* 3.7 29.8 - - + -
140A ALA* 4.8 11.7 - - + -
145A THR* 3.0 23.2 + - - +
146A LEU* 3.2 11.2 + - + +
148A HIS* 1.3 82.1 - - - +
150A ILE* 1.3 57.7 + - - +
152A GLU* 3.5 7.9 + - - +
153A ALA* 2.9 28.1 + - - +
166A VAL* 3.8 19.5 - - + -
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Residues in contact with ILE 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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17A VAL* 4.0 24.2 - - + -
20A VAL* 4.0 15.5 - - + -
21A LEU* 4.2 14.4 - - + -
105A LEU* 4.2 6.1 - - + -
107A LEU* 3.8 25.8 - - + -
146A LEU* 3.0 26.2 + - + +
147A PRO* 3.7 7.9 - - + +
149A VAL* 1.3 73.7 - - - +
151A ASP* 1.3 63.9 + - - +
153A ALA* 3.3 5.3 + - - +
154A ILE* 3.1 33.6 + - + +
166A VAL* 3.9 25.8 - - + -
168A ILE* 4.3 5.2 - - + -
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Residues in contact with ASP 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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20A VAL* 3.9 10.5 - - + +
24A TRP* 2.7 30.5 + - - +
147A PRO 2.9 17.6 + - - +
148A HIS* 3.5 11.0 - - + +
150A ILE* 1.3 75.3 - - - +
152A GLU* 1.3 57.3 - - - +
154A ILE* 3.4 2.7 + - - +
155A ARG* 3.0 44.7 + - - +
183A TYR* 4.3 9.5 - - - +
184A ALA* 3.2 7.5 - - - +
185A SER* 2.6 41.6 + - - -
313B GLY 4.8 0.7 - - - +
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Residues in contact with GLU 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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136A TYR* 3.7 20.6 - - + +
148A HIS* 2.6 34.2 + - + +
149A VAL* 3.6 6.3 - - - +
150A ILE 3.3 0.2 - - - -
151A ASP* 1.3 71.4 - - - +
153A ALA* 1.3 56.3 + - - +
155A ARG* 2.7 44.4 + - - +
156A ARG* 2.8 70.5 + - - +
310B ALA 4.8 0.5 - - - +
314B LYS* 3.2 32.2 + - - +
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Residues in contact with ALA 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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105A LEU* 3.5 24.7 - - + -
136A TYR* 3.7 14.8 - - + -
149A VAL 2.9 18.3 + - - +
150A ILE 3.3 6.9 + - - +
152A GLU* 1.3 76.4 - - - +
154A ILE* 1.3 56.4 + - - +
156A ARG* 3.9 0.5 - - - +
157A ALA* 2.9 24.6 + - - +
164A ALA* 3.2 20.8 - - + +
166A VAL* 3.8 13.5 - - + -
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Residues in contact with ILE 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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20A VAL* 4.3 3.1 - - + -
21A LEU* 3.8 28.5 - - + -
24A TRP* 3.5 55.9 - - + -
26A VAL* 5.4 1.3 - - + -
76A ILE* 3.8 26.4 - - + +
78A VAL* 5.9 0.4 - - + -
105A LEU* 4.0 15.3 - - + -
150A ILE* 3.1 22.7 + - + +
151A ASP 3.8 4.0 - - - +
153A ALA* 1.3 73.0 - - - +
155A ARG* 1.3 66.3 + - - +
157A ALA* 3.8 0.9 - - - +
158A TYR* 3.0 34.5 + - + -
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Residues in contact with ARG 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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24A TRP* 4.2 19.7 - - + -
148A HIS* 4.1 8.1 + - - -
151A ASP* 3.0 27.4 + - - +
152A GLU* 2.7 46.3 + - - +
154A ILE* 1.3 77.9 - - - +
156A ARG* 1.3 58.0 + - - +
158A TYR* 3.6 4.0 - - - +
159A ALA* 2.9 30.2 + - - +
185A SER* 2.8 19.4 + - - -
189A TYR* 6.2 0.7 - - + +
309B PRO 3.9 6.7 - - - +
310B ALA* 2.8 47.4 + - - +
312B LEU* 3.2 24.0 + - - -
313B GLY 4.5 0.6 + - - -
314B LYS* 3.5 24.8 + - - +
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Residues in contact with ARG 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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135A ASP* 4.0 19.3 + - - +
136A TYR* 3.4 46.5 - - + +
152A GLU* 2.8 47.3 + - - +
153A ALA 3.9 3.1 - - - +
155A ARG* 1.3 74.9 - - + +
157A ALA* 1.3 56.6 + - - +
159A ALA* 4.5 3.6 - - - -
160A HIS* 2.7 55.8 + - + +
310B ALA* 4.9 8.7 - - + +
314B LYS* 4.7 9.1 - - - +
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Residues in contact with ALA 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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76A ILE* 3.6 23.6 - - + -
103A PRO* 3.6 4.8 - - - +
104A VAL 4.0 10.1 - - - +
135A ASP* 4.8 2.4 + - - -
153A ALA 2.9 19.6 + - - +
154A ILE 3.4 0.4 + - - +
156A ARG* 1.3 75.7 - - - +
158A TYR* 1.3 53.6 + - - +
160A HIS* 5.3 0.2 - - - -
161A GLN* 2.8 29.8 + - - -
162A GLY 3.1 31.5 + - - +
163A VAL 5.3 0.7 - - - -
164A ALA* 4.0 7.4 - - + +
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Residues in contact with TYR 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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24A TRP* 3.7 38.6 + + - -
74A GLY 3.4 22.4 - - - -
75A LYS* 3.4 22.0 - - - +
76A ILE* 3.0 40.2 + - + +
103A PRO* 3.9 15.1 - - + +
154A ILE* 3.0 24.5 + - + +
155A ARG 3.6 4.0 - - - +
157A ALA* 1.3 75.9 - - - +
159A ALA* 1.3 62.4 + - - +
161A GLN* 2.6 31.2 + - - +
189A TYR* 3.7 37.9 - + + -
192A PRO* 5.7 3.7 - - - +
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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 ARG 2.9 21.3 + - - +
156A ARG 3.9 0.7 - - - +
158A TYR* 1.3 74.7 - - - +
160A HIS* 1.3 70.7 + - + +
161A GLN* 3.7 4.3 + - - +
192A PRO* 5.0 11.7 - - - +
308B ASP* 4.6 2.7 - - - +
309B PRO* 4.3 15.5 - - + -
310B ALA* 3.6 36.3 - - + +
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Residues in contact with HIS 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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135A ASP* 2.7 42.5 + - - +
156A ARG* 2.7 40.6 + - + +
159A ALA* 1.3 85.5 - - + +
161A GLN* 1.3 71.8 + - - +
162A GLY* 3.5 2.1 + - - -
308B ASP* 4.9 6.1 + - - -
310B ALA* 4.0 16.3 - - + +
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Residues in contact with GLN 161 (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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74A GLY 5.9 0.4 + - - -
98A ARG 4.9 0.9 - - - +
101A HIS* 3.3 51.9 + - + +
102A VAL* 4.0 2.6 - - - +
103A PRO* 3.7 22.3 - - - +
157A ALA 2.8 11.9 + - - -
158A TYR* 2.6 33.6 + - - +
159A ALA 4.5 4.3 - - - +
160A HIS* 1.3 80.8 - - - +
162A GLY* 1.3 56.5 + - - +
192A PRO* 6.0 5.2 - - + +
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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