Contacts of the helix formed by residues 153 - 180 (chain C) in PDB entry 1K6O
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 153 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
151C ILE* 3.5 6.1 - - + +
152C ASP* 1.3 75.0 - - - +
154C LYS* 1.3 53.6 + - - +
155C LEU* 2.5 36.6 + - - +
156C ARG* 2.9 30.4 + - + -
157C ARG* 3.4 7.7 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 154 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
152C ASP 3.0 9.9 + - - +
153C ASN* 1.3 67.8 - - - +
155C LEU* 1.3 62.7 + - - +
157C ARG* 3.6 26.1 + - - +
158C TYR* 3.6 17.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 155 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
153C ASN* 2.5 18.0 + - - +
154C LYS* 1.3 71.5 - - - +
156C ARG* 1.3 70.5 + - - +
158C TYR* 2.9 18.0 + - - +
159C THR* 2.8 13.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 156 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
151C ILE* 4.1 13.7 - - + -
153C ASN* 2.9 21.4 + - + +
155C LEU* 1.3 73.5 - - - +
157C ARG* 1.3 69.3 + - - +
159C THR* 2.5 26.9 + - - -
160C THR* 2.8 12.1 + - - +
120D G 4.7 13.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 157 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
179B THR* 3.7 29.1 - - + +
150C PHE* 3.3 39.0 - - + -
151C ILE* 3.5 29.7 + - + +
152C ASP* 3.7 13.7 + - - -
153C ASN 3.4 2.9 + - - +
154C LYS* 3.6 34.5 + - - +
156C ARG* 1.3 77.8 - - - +
158C TYR* 1.3 55.1 + - - +
160C THR* 2.8 3.3 + - - -
161C PHE* 2.6 34.0 + - + +
190C GLU* 2.6 46.5 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 158 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
154C LYS 3.6 9.8 + - - +
155C LEU* 2.9 13.1 + - - +
156C ARG 2.9 1.0 + - - -
157C ARG* 1.3 78.7 - - - +
159C THR* 1.3 68.1 + - + +
161C PHE* 3.1 15.6 + + + +
162C SER* 2.9 45.3 + - - -
201E T 3.9 25.2 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 159 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
155C LEU* 2.8 11.4 + - - +
156C ARG* 2.5 26.5 + - - -
158C TYR* 1.3 80.7 - - + +
160C THR* 1.3 59.9 - - - +
162C SER* 3.6 2.3 + - - -
163C LYS* 3.3 35.6 + - + +
121D A 6.0 2.0 - - - +
122D C 5.3 10.3 - - - +
201E T 4.6 22.5 - - + +
202E G 5.4 3.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 160 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
175B LEU* 6.1 0.2 - - + -
178B LEU* 4.0 21.5 - - + -
179B THR* 4.4 8.1 - - + -
151C ILE* 3.5 21.6 - - + +
156C ARG* 2.8 8.0 + - - +
157C ARG 2.8 8.1 + - - -
159C THR* 1.3 75.7 - - - +
161C PHE* 1.3 67.9 + - - +
163C LYS* 2.9 14.4 + - - -
164C ARG* 2.9 32.4 + - + +
119D G 2.9 34.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 161 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
175B LEU* 4.0 11.4 - - + +
179B THR* 3.4 32.7 - - + +
181B THR* 3.7 23.8 - - + -
157C ARG* 2.6 14.9 + - + +
158C TYR* 3.4 19.7 - + + +
160C THR* 1.3 73.0 - - - +
162C SER* 1.3 66.8 + - - +
165C LYS* 3.0 52.7 + - + +
187C VAL* 3.5 32.8 - - + -
189C SER* 3.8 30.7 - - - -
195C TYR* 4.4 6.7 - + - -
----------------------------------------------------------
Back to top of page
Residues in contact with SER 162 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
158C TYR* 2.9 41.7 + - - -
159C THR 4.1 4.0 - - - -
161C PHE* 1.3 83.4 - - - +
163C LYS* 1.3 61.9 + - - +
165C LYS* 3.7 7.1 - - - +
166C THR* 3.2 26.0 + - - -
201E T 3.9 31.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 163 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
159C THR* 3.3 20.7 + - + +
160C THR* 2.9 10.0 + - - +
162C SER* 1.3 76.7 - - - +
164C ARG* 1.3 67.0 + - + +
165C LYS 3.1 1.3 - - - -
166C THR* 3.1 7.6 + - - -
167C GLY* 2.9 19.1 + - - -
118D A 3.9 37.1 + - + +
119D G 4.3 14.1 + - + +
120D G 3.6 16.2 + - - -
121D A 4.1 4.6 - - - +
201E T 6.1 0.4 - - - -
202E G 5.0 5.6 + - - -
203E T 3.4 38.4 + - - +
204E C 4.1 4.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 164 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
171B LYS* 5.0 5.2 + - + +
174B GLU* 3.1 46.2 + - - +
175B LEU* 4.3 25.5 - - + +
178B LEU* 3.5 21.6 - - + +
143C ARG* 3.5 10.7 - - - +
148C MET* 4.7 1.0 - - - -
160C THR* 2.9 36.2 + - + +
163C LYS* 1.3 71.6 - - - +
165C LYS* 1.3 54.4 + - - +
167C GLY 3.0 0.5 + - - -
168C ILE* 2.6 39.1 + - + +
118D A 2.8 67.6 + - - +
119D G 3.1 14.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 165 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
175B LEU* 4.7 5.5 - - + +
161C PHE* 3.0 45.6 + - + +
162C SER* 3.7 8.1 - - - +
163C LYS 3.1 0.2 - - - -
164C ARG* 1.3 77.4 - - - +
166C THR* 1.3 66.2 + - - +
168C ILE* 3.2 6.8 - - - +
169C MET* 3.0 49.6 + - + +
187C VAL* 4.5 10.3 - - + -
195C TYR* 2.9 58.7 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 166 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
162C SER 3.2 11.7 + - - -
163C LYS* 3.1 9.5 + - - -
165C LYS* 1.3 83.0 - - - +
167C GLY* 1.3 58.0 + - - +
169C MET* 3.6 5.8 + - - +
170C LYS* 3.0 32.2 + - + +
201E T 4.9 11.1 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 167 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
171B LYS* 6.1 1.6 - - - -
163C LYS 2.9 11.1 + - - -
164C ARG 3.0 3.3 + - - -
166C THR* 1.3 77.6 - - - +
168C ILE* 1.3 55.9 - - - +
170C LYS* 2.9 27.4 + - - +
171C LYS* 2.9 16.8 + - - +
117D T 5.3 7.4 + - - +
118D A 3.6 20.0 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 168 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
168B ILE* 3.3 22.4 - - + +
171B LYS* 3.7 16.3 - - + +
172B ALA* 3.5 39.7 - - + +
175B LEU* 4.3 17.3 - - + -
183B VAL* 5.1 0.4 - - + -
185B LEU* 5.6 0.2 - - + -
164C ARG* 2.6 18.2 + - + +
165C LYS* 3.2 17.5 - - - +
167C GLY* 1.3 71.9 - - - +
169C MET* 1.3 66.5 + - + +
171C LYS* 2.9 10.6 + - - +
172C ALA* 2.8 26.9 + - - +
185C LEU* 3.7 26.5 - - + -
187C VAL* 5.0 0.2 - - + -
118D A 4.8 1.6 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with MET 169 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
165C LYS* 3.0 32.0 + - + +
166C THR* 3.8 5.8 - - - +
168C ILE* 1.3 79.5 - - + +
170C LYS* 1.3 68.3 + - - +
172C ALA* 3.3 4.5 + - - +
173C TYR* 3.1 22.0 + - - +
185C LEU* 3.5 35.2 - - + -
187C VAL* 4.0 18.6 - - + -
195C TYR* 4.2 25.4 - - + +
196C THR* 4.3 8.7 - - - +
197C PHE* 4.0 24.7 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 170 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
166C THR* 3.0 20.3 + - + +
167C GLY* 2.9 17.4 + - - +
169C MET* 1.3 77.1 - - - +
171C LYS* 1.3 54.1 + - - +
173C TYR* 3.1 12.7 + - + +
174C GLU* 2.9 45.9 + - + +
117D T 3.6 35.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 171 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
143B ARG* 5.8 2.4 - - - +
164B ARG* 3.7 23.4 - - + +
168B ILE* 3.4 26.0 - - + +
171B LYS* 4.5 24.0 - - + +
167C GLY 2.9 16.4 + - - +
168C ILE* 2.9 13.2 + - - +
170C LYS* 1.3 72.5 - - + +
172C ALA* 1.3 56.7 + - - +
173C TYR 2.8 4.3 - - - -
174C GLU* 2.7 13.4 + - - -
175C LEU* 2.6 37.5 + - + +
116D T 4.7 3.0 + - - -
117D T 3.5 28.4 + - - +
210E A 3.8 10.9 + - - -
211E T 3.3 25.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 172 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
168B ILE* 4.0 8.6 - - + +
185B LEU* 5.4 0.4 - - + -
168C ILE 2.8 15.4 + - - +
169C MET 3.8 7.2 - - - +
171C LYS* 1.3 72.6 - - - +
173C TYR* 1.3 57.1 + - - +
175C LEU* 4.2 5.5 - - - +
176C SER* 2.9 29.3 + - - -
183C VAL* 4.0 18.0 - - + +
185C LEU* 4.1 17.3 - - + -
197C PHE* 3.6 28.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 173 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
148B MET* 4.8 15.6 + - + +
169C MET 3.1 10.6 + - - +
170C LYS* 3.1 16.8 + - + +
171C LYS 2.7 1.6 + - - -
172C ALA* 1.3 76.4 - - - +
174C GLU* 1.3 66.8 + - + +
176C SER* 4.9 1.3 - - - -
177C THR* 2.8 61.8 + - + +
197C PHE* 3.8 25.8 - + + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 174 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
148B MET* 3.1 37.5 - - + +
164B ARG* 3.2 34.5 + - - +
170C LYS* 2.9 38.1 - - + +
171C LYS* 2.7 20.2 + - - +
173C TYR* 1.3 77.0 - - + +
175C LEU* 1.3 56.7 + - - +
178C LEU* 2.8 39.1 + - - +
116D T 4.9 2.3 - - - +
117D T 4.1 6.7 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 175 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
161B PHE* 4.3 11.7 - - + +
164B ARG* 3.7 34.6 - - + +
165B LYS* 4.2 6.3 - - - +
168B ILE* 4.1 22.7 - - + -
187B VAL* 3.5 36.8 - - + -
171C LYS* 2.6 20.3 + - + +
172C ALA* 4.2 3.4 - - - +
174C GLU* 1.3 71.3 - - - +
176C SER* 1.3 66.3 + - - +
178C LEU* 4.9 2.0 - - - -
179C THR* 2.9 44.8 + - + +
181C THR* 4.5 2.2 - - - +
183C VAL* 3.9 14.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with SER 176 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
172C ALA 2.9 23.3 + - - -
173C TYR* 3.6 4.6 + - - -
175C LEU* 1.3 76.1 - - - +
177C THR* 1.3 58.6 + - - +
180C GLY* 2.6 40.0 + - - -
181C THR 3.2 14.1 + - - -
183C VAL* 4.2 4.0 - - - -
197C PHE* 4.0 8.8 - - - -
199C THR* 3.4 30.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 177 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
148B MET* 3.2 34.1 - - + +
149B GLU* 4.3 7.2 - - - -
150B PHE* 4.0 11.6 - - - +
173C TYR* 2.8 51.2 + - - +
176C SER* 1.3 78.9 + - - +
178C LEU* 1.3 67.6 + - - +
180C GLY* 3.0 12.7 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 178 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
146B ILE* 4.5 13.5 - - + -
147B LYS 3.8 16.6 - - - +
148B MET* 3.3 20.6 - - + -
149B GLU 3.6 20.9 - - - +
150B PHE* 3.3 3.6 - - - -
151B ILE* 3.1 45.2 + - + +
160B THR* 4.4 11.4 - - + -
164B ARG* 3.6 41.3 - - - +
174C GLU 2.8 28.5 + - - +
175C LEU* 5.1 0.2 - - - -
177C THR* 1.3 76.3 - - - +
179C THR* 1.3 65.9 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 179 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
150B PHE* 3.8 11.9 - - - -
151B ILE* 5.5 0.4 - - + -
157B ARG* 3.9 25.9 - - + +
160B THR* 4.7 6.7 - - + -
161B PHE* 3.6 37.9 - - + +
190B GLU* 4.5 3.1 - - - +
175C LEU* 2.9 27.7 + - + +
178C LEU* 1.3 84.8 - - + +
180C GLY* 1.3 63.5 + - - +
181C THR* 3.0 32.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 180 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
150B PHE* 4.2 9.6 - - - -
190B GLU* 6.0 1.6 - - - +
176C SER 2.6 20.3 + - - -
177C THR* 3.0 10.9 + - - -
179C THR* 1.3 74.5 - - - +
181C THR* 1.3 57.5 + - - +
182C GLN* 4.4 3.2 + - - -
----------------------------------------------------------
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