Contacts of the helix formed by residues 144 - 166 (chain A) in PDB entry 2HXO
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 HIS 144 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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140A VAL* 3.7 17.0 - - + -
141A PRO* 2.9 28.0 + - + -
143A ALA* 1.3 91.9 + - + +
145A TRP* 1.3 58.3 + - - +
146A PHE 3.3 2.9 - - - -
147A THR* 3.2 18.7 + - - +
148A ALA* 2.8 32.9 + - - +
231A LEU* 3.9 32.2 - - + +
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Residues in contact with TRP 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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135A VAL* 4.2 14.2 - - + +
136A GLN* 3.2 43.7 - - + +
140A VAL* 2.7 34.5 + - + -
141A PRO 3.2 9.2 - - - -
142A GLU* 3.2 56.1 + - + +
144A HIS* 1.3 76.7 - - - +
146A PHE* 1.3 57.3 + - - +
148A ALA* 4.1 1.0 - - - +
149A SER* 2.8 35.0 + - - -
200B PHE* 3.6 17.3 - + + -
203B ALA* 3.7 19.1 - - + -
204B VAL* 3.9 20.0 - - + -
207B GLN* 5.7 0.2 - - - -
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Residues in contact with PHE 146 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
128A PHE* 3.6 25.4 - + - -
144A HIS 3.3 0.2 - - - -
145A TRP* 1.3 76.7 - - - +
147A THR* 1.3 63.4 + - - +
149A SER* 3.8 1.3 - - - -
150A SER* 2.8 54.7 + - - -
183B LEU* 6.4 0.4 - - + -
190B TRP* 4.3 9.4 - + - -
200B PHE* 4.9 0.2 - - - -
204B VAL* 4.4 19.3 - - + -
207B GLN* 3.3 37.0 + - + +
208B VAL* 4.1 27.8 - - + -
211B HIS* 3.4 46.2 - + + -
216B GLN* 4.9 0.2 - - - -
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Residues in contact with THR 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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143A ALA 4.4 5.4 + - - -
144A HIS* 3.2 24.8 + - + +
146A PHE* 1.3 80.3 - - - +
148A ALA* 1.3 62.7 + - - +
151A ALA* 3.0 22.3 + - - +
231A LEU* 6.3 0.9 - - + -
211B HIS* 6.1 0.5 - - - -
216B GLN* 3.2 26.9 + - - +
219B ALA* 3.6 31.4 - - + -
223B LEU* 4.7 10.1 - - + -
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Residues in contact with ALA 148 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
135A VAL* 3.9 22.4 - - + -
144A HIS* 2.8 20.4 + - - +
147A THR* 1.3 74.1 - - - +
149A SER* 1.3 63.1 + - - +
151A ALA* 3.4 2.8 + - - +
152A LEU* 3.2 28.4 + - - +
228A ILE* 3.6 28.7 - - + +
231A LEU* 4.2 10.7 - - + +
223B LEU* 4.4 8.1 - - - -
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Residues in contact with SER 149 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
128A PHE* 3.9 23.2 - - - -
131A LEU* 3.9 8.0 - - - +
132A GLY* 3.5 16.3 + - - -
135A VAL* 3.8 9.0 - - - +
145A TRP 2.8 22.0 + - - -
146A PHE* 3.8 3.4 - - - -
148A ALA* 1.3 79.6 - - - +
150A SER* 1.3 56.5 + - - +
152A LEU* 3.4 8.8 + - - +
153A MSE 3.1 26.9 + - - +
200B PHE* 3.2 18.8 - - - -
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Residues in contact with SER 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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128A PHE* 3.5 17.3 - - - -
146A PHE* 2.8 52.5 + - - -
149A SER* 1.3 70.2 - - - +
151A ALA* 1.3 59.8 + - - +
153A MSE 3.4 1.2 - - - +
154A HIS* 2.8 40.9 + - - -
211B HIS* 5.0 0.8 - - - -
216B GLN* 3.6 26.0 - - - -
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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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147A THR 3.0 17.4 + - - +
148A ALA 3.6 4.9 - - - +
150A SER* 1.3 74.9 - - - +
152A LEU* 1.3 66.8 + - - +
154A HIS* 3.3 3.7 + - - +
155A TYR* 2.9 24.9 + - - +
224A VAL* 4.5 10.5 - - + +
155B TYR* 4.2 10.8 - - + -
216B GLN* 3.6 10.0 - - - +
220B GLY* 4.2 11.4 - - - +
223B LEU* 3.8 22.9 - - + -
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Residues in contact with LEU 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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90A VAL* 4.1 18.8 - - + -
131A LEU* 4.2 18.4 - - + -
135A VAL* 4.1 18.2 - - + -
148A ALA 3.2 11.7 + - - +
149A SER* 3.6 7.4 - - - +
151A ALA* 1.3 75.6 - - - +
153A MSE 1.3 59.8 + - - +
155A TYR* 3.1 6.3 + - - +
156A ILE* 2.9 35.0 + - + +
221A ILE* 3.6 26.4 - - + +
224A VAL* 3.8 19.3 - - + -
225A LEU* 4.0 21.8 - - + -
228A ILE* 3.6 19.3 - - + -
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Residues in contact with MSE 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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97A LEU* 5.2 5.2 - - - -
115A LEU* 4.4 15.3 - - + -
124A ALA* 4.4 5.6 - - - +
127A ILE* 3.3 39.7 - - + -
128A PHE* 3.3 41.7 - - + -
131A LEU* 4.1 8.0 - - + +
149A SER 3.1 14.0 + - - +
150A SER 3.4 9.6 - - - +
152A LEU* 1.3 76.9 - - - +
154A HIS* 1.3 68.4 + - + +
156A ILE* 3.1 5.9 + - - +
157A LEU* 2.9 56.8 + - + +
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Residues in contact with HIS 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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115A LEU* 6.0 1.7 - - + +
150A SER* 2.8 31.0 + - - +
151A ALA 3.9 3.1 + - - +
153A MSE 1.3 77.9 - - + +
155A TYR* 1.3 64.4 + - - +
157A LEU* 3.5 7.7 + - + +
158A GLY 3.1 17.8 + - - -
98B TRP* 6.5 0.4 - + - -
155B TYR* 4.3 11.6 + - + +
158B GLY* 3.6 11.5 - - - -
159B ALA* 4.1 31.9 - - + +
162B GLN* 4.2 30.7 - - + +
211B HIS* 5.8 2.2 - + - -
213B ASP* 5.8 3.8 - - - -
216B GLN* 4.3 24.2 + - + +
217B PHE* 6.0 0.6 - - - -
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Residues in contact with TYR 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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151A ALA 2.9 14.6 + - - +
152A LEU* 3.4 8.5 - - - +
154A HIS* 1.3 77.7 - - - +
156A ILE* 1.3 66.8 + - - +
158A GLY* 3.2 2.1 + - - -
159A ALA* 3.0 29.7 + - + +
216A GLN* 3.7 3.5 + - - -
217A PHE* 3.0 43.8 + + - -
220A GLY* 3.2 23.1 - - - -
221A ILE* 3.6 32.3 - - + -
224A VAL* 4.2 22.2 - - + -
151B ALA* 4.1 17.9 - - + -
154B HIS* 4.1 16.3 + - + +
155B TYR* 4.3 28.4 - - + +
224B VAL* 5.8 0.2 - - + -
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Residues in contact with ILE 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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90A VAL* 5.6 0.2 - - + -
94A ALA* 3.7 27.6 - - + +
97A LEU* 3.8 38.1 - - + -
131A LEU* 4.6 20.9 - - + -
152A LEU 2.9 23.5 + - - +
153A MSE 3.1 9.6 + - - +
155A TYR* 1.3 79.9 - - - +
157A LEU* 1.3 63.2 + - + +
160A ALA* 2.8 40.5 + - + +
217A PHE* 4.1 15.3 - - + -
221A ILE* 3.9 18.6 - - + -
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Residues in contact with LEU 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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97A LEU* 5.6 2.2 - - + -
111A LEU* 4.9 25.8 - - + +
112A ALA 5.8 0.4 - - - +
115A LEU* 3.4 29.8 - - + -
153A MSE 2.9 44.6 + - + +
154A HIS* 3.9 7.9 - - + +
156A ILE* 1.3 83.0 - - + +
158A GLY* 1.3 58.3 + - - +
160A ALA* 4.8 1.8 - - - -
161A GLY* 2.8 27.7 + - - +
158B GLY* 4.5 3.1 - - - +
162B GLN* 3.7 32.5 - - + +
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Residues in contact with GLY 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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154A HIS 3.1 10.3 + - - -
155A TYR 3.7 0.7 - - - -
157A LEU* 1.3 76.9 - - - +
159A ALA* 1.3 62.8 + - - +
161A GLY* 4.2 0.4 - - - -
162A GLN* 3.2 23.6 + - - +
154B HIS* 3.6 17.7 - - - +
157B LEU* 4.5 5.5 - - - +
158B GLY* 3.3 26.4 - - - -
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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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98A TRP* 3.7 7.2 - - + -
155A TYR* 3.0 21.3 + - + +
158A GLY* 1.3 73.4 - - - +
160A ALA* 1.3 62.1 + - - +
162A GLN* 3.3 4.3 + - - +
163A ASN* 2.9 27.9 + - - +
217A PHE* 3.4 30.7 - - + -
154B HIS* 3.9 31.2 - - + +
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Residues in contact with ALA 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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97A LEU 5.1 0.2 - - - -
98A TRP* 3.9 29.7 - - + +
101A THR* 3.8 27.0 + - + +
108A ALA* 5.3 0.4 - - - -
156A ILE* 2.8 31.0 + - + +
157A LEU* 4.6 1.6 - - - +
159A ALA* 1.3 74.5 - - - +
161A GLY* 1.3 57.4 + - - +
163A ASN* 3.2 3.1 + - - +
164A ALA* 2.9 29.3 + - - +
217A PHE* 4.2 1.3 - - + -
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Residues in contact with GLY 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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108A ALA* 4.4 17.1 - - - +
157A LEU* 2.8 23.6 + - - +
158A GLY 4.2 0.2 - - - -
160A ALA* 1.3 78.4 - - - +
162A GLN* 1.3 60.2 + - - +
164A ALA* 3.3 6.2 + - - +
165A ALA* 3.3 18.0 + - - +
112B ALA* 6.1 0.6 - - - +
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Residues in contact with GLN 162 (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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158A GLY 3.2 18.4 + - - +
159A ALA* 3.3 5.4 + - - +
161A GLY* 1.3 73.5 - - - +
163A ASN* 1.3 67.0 + - - +
165A ALA* 3.1 5.4 + - - +
166A ASN* 3.0 34.2 + - - +
112B ALA* 3.1 30.6 + - - +
115B LEU* 3.2 37.9 - - + +
116B SER* 2.5 29.3 + - - -
154B HIS* 4.8 17.3 - - + +
157B LEU* 4.8 8.5 - - + +
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Residues in contact with ASN 163 (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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98A TRP* 3.3 57.0 + - + -
101A THR* 4.1 5.9 + - - -
102A GLU* 3.5 37.1 + - - +
159A ALA 2.9 6.0 + - - +
160A ALA 3.4 7.2 - - - +
162A GLN* 1.3 77.8 - - - +
164A ALA* 1.3 62.1 + - - +
166A ASN* 3.1 30.5 - - - +
213A ASP* 4.6 7.2 - - - +
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Residues in contact with ALA 164 (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 THR* 4.2 18.8 - - - +
102A GLU* 5.9 0.9 - - - +
105A PRO* 4.4 17.0 - - + +
108A ALA* 3.9 22.4 - - + -
160A ALA 2.9 12.8 + - - +
161A GLY 3.5 9.2 - - - +
162A GLN 3.2 0.2 - - - -
163A ASN* 1.3 80.3 - - - +
165A ALA* 1.3 63.4 + - - +
166A ASN 5.1 0.2 - - - +
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Residues in contact with ALA 165 (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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161A GLY 3.3 8.2 + - - +
162A GLN* 3.1 11.5 + - - +
164A ALA* 1.3 81.4 - - - +
166A ASN* 1.3 60.1 + - - +
112B ALA* 4.4 9.0 - - + +
116B SER* 3.0 24.9 - - - +
117B ARG* 3.4 34.3 + - - +
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Residues in contact with ASN 166 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
162A GLN* 3.0 34.4 + - - +
163A ASN* 3.1 26.0 + - - +
164A ALA 5.1 0.2 - - - +
165A ALA* 1.3 79.4 - - - +
182A PHE* 3.2 37.4 - - + +
183A LEU* 5.7 2.8 - - - +
213A ASP* 5.6 9.8 + - - +
115B LEU 3.4 2.9 + - - +
116B SER* 3.2 35.8 + - - +
117B ARG* 5.4 0.4 - - + +
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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
------------------------------------------------------------
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