Contacts of the helix formed by residues 144 - 168 (chain A) in PDB entry 1FX8
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 ASN 144 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
139A PRO* 5.7 1.3 - - - -
143A ILE* 1.3 75.4 - - - +
145A PHE* 1.3 55.8 + - + +
146A VAL* 3.2 9.8 + - - +
147A GLN* 2.7 47.8 + - - +
148A ALA* 2.8 37.1 + - - +
228A ARG* 3.5 11.2 - - - +
232A TYR* 6.2 0.2 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 145 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
144A ASN* 1.3 76.7 - - + +
146A VAL* 1.3 69.1 + - + +
148A ALA* 3.2 7.0 + - - +
149A PHE* 2.9 41.0 + + + +
228A ARG* 4.7 1.6 - - - +
230A ILE* 3.3 60.1 - - + -
231A PRO 3.7 15.7 - - - -
232A TYR* 4.8 7.9 - + - -
234A LEU* 3.8 22.4 - - + -
235A VAL* 3.5 29.5 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 146 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
144A ASN* 3.2 9.2 + - - +
145A PHE* 1.3 85.8 - - + +
147A GLN* 1.3 65.7 + - + +
149A PHE* 3.2 9.1 + - + +
150A ALA* 3.0 23.6 + - + +
230A ILE* 6.3 0.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 147 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
142A HIS 4.3 3.3 + - - +
143A ILE* 3.4 22.0 - - + +
144A ASN* 2.7 52.4 + - - +
146A VAL* 1.3 78.8 - - + +
148A ALA* 1.3 61.7 + - - +
150A ALA* 3.3 7.5 + - - +
151A VAL* 3.2 27.8 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 148 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
139A PRO* 4.4 3.4 - - + -
143A ILE* 3.9 9.1 - - + +
144A ASN 2.8 16.6 + - - +
145A PHE 3.6 4.5 - - - +
147A GLN* 1.3 76.0 - - - +
149A PHE* 1.3 61.9 + - - +
151A VAL* 3.3 3.6 + - - +
152A GLU* 3.2 21.3 + - - +
198A THR* 3.7 21.9 - - + +
232A TYR* 3.7 30.1 - - + +
235A VAL* 3.6 8.3 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 149 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
145A PHE* 2.9 25.4 + + + +
146A VAL* 3.4 14.1 - - + +
148A ALA* 1.3 75.7 - - - +
150A ALA* 1.3 66.1 + - - +
152A GLU* 3.5 2.4 + - - +
153A MET* 3.0 39.1 + - + +
234A LEU 4.9 0.9 - - - -
235A VAL* 3.7 24.9 - - + +
238A PHE* 4.0 15.0 - + + -
239A GLY* 3.5 34.3 - - - -
242A VAL* 4.3 18.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 150 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
146A VAL* 3.0 13.6 + - + +
147A GLN* 3.7 10.8 - - - +
148A ALA 3.3 0.2 - - - -
149A PHE* 1.3 76.0 - - - +
151A VAL* 1.3 66.9 + - + +
153A MET* 3.3 12.9 + - + +
154A VAL* 2.9 34.0 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 151 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
143A ILE* 4.7 3.4 - - + -
147A GLN 3.2 18.3 + - - +
148A ALA* 3.5 7.2 - - - +
149A PHE 3.3 0.2 - - - -
150A ALA* 1.3 78.1 - - + +
152A GLU* 1.3 64.0 + - - +
154A VAL* 3.7 3.7 - - - +
155A ILE* 3.0 40.9 + - + +
194A MET* 4.5 10.8 - - + +
197A LEU* 3.9 37.7 - - + -
198A THR* 3.6 24.9 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 152 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
148A ALA 3.2 15.6 + - - +
149A PHE 4.0 3.4 - - - +
151A VAL* 1.3 79.4 - - - +
153A MET* 1.3 60.2 + - - +
155A ILE* 3.8 8.8 - - - +
156A THR* 2.6 33.0 + - - -
198A THR* 2.7 30.3 + - - +
201A ALA* 3.0 31.6 + - - +
202A MET* 2.8 29.3 + - - -
232A TYR* 4.8 1.7 + - - +
235A VAL* 3.8 22.0 - - + +
236A PRO* 4.9 1.8 - - + -
239A GLY* 4.3 3.4 - - - -
240A PRO* 4.0 15.5 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with MET 153 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
149A PHE* 3.0 31.9 + - + +
150A ALA* 3.5 10.3 - - + +
152A GLU* 1.3 77.6 - - - +
154A VAL* 1.3 76.3 + - + +
157A ALA* 3.1 25.0 + - + +
239A GLY 3.6 14.5 + - - +
242A VAL* 3.9 35.9 - - + +
243A GLY* 3.5 5.3 - - - -
246A VAL* 5.2 9.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 154 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
150A ALA* 2.9 23.5 + - + +
151A VAL* 3.7 4.5 - - - +
153A MET* 1.3 88.3 - - + +
155A ILE* 1.3 68.8 + - + +
157A ALA* 3.3 7.2 + - - +
158A ILE* 3.1 37.9 + - + +
194A MET* 6.3 2.0 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 155 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
151A VAL* 3.0 31.2 + - + +
152A GLU* 3.5 17.5 - - - +
154A VAL* 1.3 81.0 - - + +
156A THR* 1.3 60.2 + - - +
158A ILE* 3.4 12.5 + - + +
159A LEU* 2.9 26.2 + - - +
190A ILE* 3.8 16.3 - - + +
194A MET* 3.6 36.8 - - + +
200A PHE* 3.7 28.0 - - + -
202A MET* 3.4 28.8 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 156 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
68A ASN* 5.5 0.4 - - - +
70A ALA* 4.5 2.5 - - + -
71A VAL* 6.3 0.9 - - + -
152A GLU 2.6 24.5 + - - -
153A MET 4.2 1.3 - - - -
155A ILE* 1.3 73.9 - - - +
157A ALA* 1.3 61.3 + - - +
159A LEU* 3.1 10.7 + - + -
160A MET* 2.8 29.6 + - + +
202A MET* 3.4 37.6 - - + +
240A PRO* 3.2 36.5 - - + +
243A GLY 4.0 0.9 - - - -
244A ALA* 3.8 14.4 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 157 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
153A MET* 3.1 17.1 + - + +
154A VAL* 3.5 7.6 - - - +
156A THR* 1.3 75.9 - - - +
158A ILE* 1.3 59.5 + - + +
161A GLY* 2.9 27.4 + - - -
243A GLY 3.0 22.4 + - - +
246A VAL* 4.4 11.0 - - + -
247A GLY* 3.3 21.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 158 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
154A VAL* 3.1 28.9 + - + +
155A ILE* 3.5 14.4 - - + +
157A ALA* 1.3 77.9 - - + +
159A LEU* 1.3 62.4 + - - +
161A GLY* 5.1 0.4 - - - -
162A LEU* 2.9 40.8 + - + +
186A LEU* 4.6 6.7 - - + -
190A ILE* 4.2 19.3 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 159 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
68A ASN* 4.3 7.6 - - - +
71A VAL* 5.2 2.7 - - + -
155A ILE 2.9 15.3 + - - +
156A THR* 3.4 13.7 - - + +
158A ILE* 1.3 76.8 - - - +
160A MET* 1.3 57.0 + - - +
162A LEU* 3.8 0.7 - - - -
163A ILE* 2.9 51.5 + - + +
183A ILE* 5.0 0.9 - - + -
186A LEU* 3.9 21.3 - - + +
187A ILE* 3.9 24.9 - - + -
190A ILE* 4.2 8.3 - - + -
202A MET* 3.9 34.1 - - + +
663A GOL 4.0 22.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with MET 160 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
71A VAL* 4.0 29.4 - - + -
74A ALA* 3.9 18.2 - - + -
75A LEU* 4.2 15.0 - - + -
156A THR* 2.8 19.7 + - + +
157A ALA 3.9 2.7 - - - +
159A LEU* 1.3 73.4 - - - +
161A GLY* 1.3 63.8 + - - +
163A ILE* 3.1 17.4 + - + -
164A LEU* 3.0 51.9 + - + +
244A ALA* 3.2 34.8 - - + +
248A ALA* 3.8 16.4 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 161 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
157A ALA 2.9 17.4 + - - -
158A ILE* 3.9 1.1 - - - -
160A MET* 1.3 78.2 - - - +
162A LEU* 1.3 60.9 + - - +
164A LEU* 3.4 1.8 + - - +
165A ALA* 3.1 25.1 + - - +
247A GLY* 3.9 16.1 - - - -
251A TYR* 3.6 19.0 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 162 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
158A ILE* 2.9 30.0 + - + +
161A GLY* 1.3 77.1 - - - +
163A ILE* 1.3 61.3 + - - +
164A LEU 3.2 0.2 - - - -
165A ALA* 3.7 12.7 - - + +
166A LEU* 2.8 44.7 + - + +
186A LEU* 3.4 37.5 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 163 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
71A VAL* 4.5 17.7 - - + -
159A LEU* 2.9 48.6 + - + +
160A MET* 3.1 18.1 + - + +
162A LEU* 1.3 76.5 - - - +
164A LEU* 1.3 63.7 + - + +
166A LEU* 3.4 4.3 + - - -
167A THR* 2.8 36.1 + - + +
183A ILE* 4.1 38.6 - - + -
186A LEU* 4.6 2.0 - - + -
663A GOL 4.4 12.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 164 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
75A LEU* 4.3 15.3 - - + -
78A PHE* 6.0 0.2 - - + -
160A MET* 3.0 34.1 + - + +
161A GLY 3.6 6.3 - - - +
163A ILE* 1.3 78.6 - - + +
165A ALA* 1.3 57.5 + - - +
167A THR* 3.3 7.9 + - - +
168A ASP* 2.8 34.0 + - - +
248A ALA* 3.8 36.1 - - + +
251A TYR* 3.7 29.8 - - + -
252A ARG* 4.4 22.7 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 165 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
161A GLY 3.1 14.0 + - - +
162A LEU* 3.7 18.6 - - + +
163A ILE 3.3 0.2 - - - -
164A LEU* 1.3 78.3 - - - +
166A LEU* 1.3 61.9 + - + +
167A THR 3.4 0.3 + - - -
168A ASP* 3.4 8.1 + - - +
171A ASN* 4.3 12.2 + - - +
175A ARG* 3.3 16.6 + - - -
251A TYR* 3.5 30.0 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 166 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
162A LEU* 2.8 41.4 + - + +
163A ILE 3.9 3.4 - - - +
165A ALA* 1.3 74.2 - - + +
167A THR* 1.3 60.2 + - + +
175A ARG* 2.9 38.1 + - + +
179A ALA* 4.2 8.3 - - - +
182A LEU* 3.9 55.2 - - + +
183A ILE* 3.9 20.6 - - + -
186A LEU* 4.6 9.4 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 167 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
163A ILE* 2.8 28.0 + - + +
164A LEU* 3.3 12.8 + - - +
166A LEU* 1.3 79.2 - - - +
168A ASP* 1.3 58.2 + - - +
169A ASP* 3.2 17.4 + - - +
179A ALA* 4.6 11.7 - - + -
183A ILE* 4.4 20.4 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 168 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
164A LEU 2.8 17.7 + - - +
165A ALA 3.4 4.7 + - - +
166A LEU 3.5 0.2 - - - -
167A THR* 1.3 74.4 - - - +
169A ASP* 1.3 58.9 + - - +
170A GLY* 3.0 15.2 + - - -
171A ASN* 3.0 22.7 + - + +
175A ARG* 3.4 10.8 + - - -
251A TYR* 2.6 31.3 + - + +
256A GLY* 5.2 0.7 - - - -
259A LEU* 3.1 21.0 - - - +
----------------------------------------------------------
Back to top of page
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
------------------------------------------------------------
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) + - + + + + + -
------------------------------------------------------------
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