Contacts of the helix formed by residues 221 - 231 (chain C) in PDB entry 3ZXT
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 221 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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219C GLY 3.7 1.2 - - - -
220C ASP* 1.3 78.6 - - - +
222C LYS* 1.3 59.5 + - - +
223C GLN* 3.9 7.9 - - - -
224C GLU* 3.1 18.7 + - - +
225C THR* 3.0 28.6 + - - -
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Residues in contact with LYS 222 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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221C THR* 1.3 69.9 - - - +
223C GLN* 1.3 64.5 + - - +
225C THR* 3.6 8.4 + - - +
226C LEU* 3.2 32.6 + - + +
181D PRO* 5.5 11.3 - - + +
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Residues in contact with GLN 223 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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221C THR* 3.2 7.7 - - - -
222C LYS* 1.3 77.2 - - - +
224C GLU* 1.3 65.1 + - - +
226C LEU* 3.3 13.4 + - + +
227C ALA* 3.1 22.2 + - - +
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Residues in contact with GLU 224 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
218C LEU 4.7 0.2 - - - +
219C GLY* 3.1 18.3 - - - -
220C ASP* 3.5 20.3 + - - +
221C THR* 3.1 24.1 + - - +
223C GLN* 1.3 78.3 - - - +
225C THR* 1.3 64.5 + - - +
226C LEU 3.1 0.5 + - - -
227C ALA* 3.1 7.0 + - + +
228C ASN* 3.0 41.6 + - - +
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Residues in contact with THR 225 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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217C PHE 3.3 18.4 - - - +
218C LEU* 3.3 7.8 - - + +
219C GLY* 2.4 30.3 + - - +
221C THR 3.0 11.0 + - - -
222C LYS* 3.8 10.4 - - - -
223C GLN 3.4 0.2 - - - -
224C GLU* 1.3 74.0 - - - +
226C LEU* 1.3 57.4 + - - +
228C ASN* 3.2 4.5 + - - +
229C VAL* 3.0 28.9 + - + +
181D PRO* 3.7 26.5 - - + +
182D GLU* 3.7 24.0 - - + +
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Residues in contact with LEU 226 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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222C LYS* 3.2 19.9 + - + +
223C GLN* 3.5 15.9 - - + +
224C GLU 3.1 0.8 - - - -
225C THR* 1.3 73.2 - - - +
227C ALA* 1.3 60.8 + - - +
229C VAL* 3.4 5.1 + - - +
230C SER* 2.8 32.4 + - - -
181D PRO* 3.9 32.5 - - + +
189D VAL* 4.5 26.9 - - + +
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Residues in contact with ALA 227 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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223C GLN 3.1 9.3 + - - +
224C GLU* 3.1 10.8 + - + +
226C LEU* 1.3 76.6 - - - +
228C ASN* 1.3 60.4 + - - +
230C SER* 3.2 9.3 - - - -
231C ALA* 2.8 33.2 + - - +
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Residues in contact with ASN 228 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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216C PRO 5.1 0.4 + - - -
217C PHE* 2.9 37.7 + - + +
218C LEU 3.9 5.5 + - - -
219C GLY* 4.1 0.2 - - - -
224C GLU* 3.0 36.2 + - - +
225C THR 3.2 9.4 + - - +
227C ALA* 1.3 76.5 - - - +
229C VAL* 1.3 57.2 + - - +
231C ALA 3.1 1.9 + - - -
232C VAL* 2.9 9.2 + - - -
233C ASN* 2.9 57.7 + - - +
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Residues in contact with VAL 229 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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201C TRP* 4.3 5.5 - - + -
217C PHE* 3.7 30.0 - - + -
225C THR* 3.0 19.8 + - + +
226C LEU* 3.7 6.3 - - - +
228C ASN* 1.3 71.1 - - - +
230C SER* 1.3 58.7 - - - +
232C VAL* 2.8 30.3 + - - +
181D PRO 3.8 20.9 - - - +
182D GLU* 4.7 2.9 - - - +
184D VAL 3.1 24.9 - - - +
185D ALA 3.8 1.8 - - - -
186D PRO* 3.7 25.0 - - + +
189D VAL* 3.9 12.3 - - + -
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Residues in contact with SER 230 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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226C LEU 2.8 20.7 + - - -
227C ALA* 3.2 10.3 - - - -
229C VAL* 1.3 80.1 - - - +
231C ALA* 1.3 57.8 + - - -
232C VAL 3.8 0.2 + - - -
258C LYS* 2.9 32.2 + - - +
186D PRO* 4.5 5.1 - - - +
189D VAL* 4.7 3.3 - - - +
190D ASN* 3.0 32.0 + - - -
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Residues in contact with ALA 231 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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227C ALA 2.8 19.2 + - - +
228C ASN 4.1 1.3 - - - +
230C SER* 1.3 73.6 - - - +
232C VAL* 1.3 73.5 + - - +
233C ASN* 3.0 12.6 + - + +
258C LYS* 5.0 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