Contacts of the helix formed by residues 233 - 237 (chain A) in PDB entry 1UA4
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 GLY 233 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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30A ASN* 3.5 21.5 + - - -
206A ASN 4.4 4.7 - - - +
209A LEU* 3.8 20.4 - - - +
232A SER* 1.3 76.8 + - - +
234A LEU* 1.3 60.4 + - - +
235A GLN* 2.8 26.6 + - - -
236A ALA* 3.6 15.2 + - - +
237A LEU 4.8 0.3 + - - -
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Residues in contact with LEU 234 (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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29A TYR* 4.7 5.4 - - + -
209A LEU* 4.2 19.5 - - + -
231A LEU* 5.4 1.3 - - + -
232A SER* 4.0 20.2 - - - +
233A GLY* 1.3 80.0 - - - +
235A GLN* 1.3 62.6 + - - +
236A ALA 3.1 1.8 + - - -
237A LEU* 3.2 25.7 + - - +
246A PHE* 3.9 31.2 - - + -
249A VAL* 4.6 24.5 - - + -
265A LEU* 4.6 18.6 - - + -
275A VAL* 3.7 9.4 - - - +
279A ILE* 3.9 26.9 - - + -
282A VAL* 5.3 5.8 - - + -
286A PHE* 5.7 2.7 - - + -
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Residues in contact with GLN 235 (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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30A ASN* 3.7 10.5 - - - +
88A GLU* 4.8 10.1 - - - +
113A GLN* 3.1 26.9 + - - -
232A SER* 3.6 5.4 + - - -
233A GLY* 2.8 24.1 + - - +
234A LEU* 1.3 72.3 + - - +
236A ALA* 1.3 65.5 + - + +
237A LEU 3.4 2.8 + - - +
266A GLU 4.7 1.7 - - - +
268A ALA* 3.3 29.5 + - + +
269A PHE 3.4 18.2 - - - +
270A THR* 3.4 38.4 - - - +
271A PRO* 3.7 11.4 - - - +
279A ILE* 4.6 0.8 - - - +
1457A GLC 4.1 7.5 + - - -
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Residues in contact with ALA 236 (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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88A GLU* 6.2 0.2 - - - +
90A PHE* 5.5 9.3 - - + +
201A SER* 5.7 2.5 - - - +
206A ASN 4.1 7.2 - - - +
207A THR* 3.6 43.1 - - + +
233A GLY 3.6 5.3 + - - +
234A LEU 3.2 1.4 - - - -
235A GLN* 1.3 81.1 - - + +
237A LEU* 1.3 66.4 + - + +
238A THR* 3.9 9.4 + - - +
241A ASN* 5.4 0.2 + - - -
271A PRO* 6.0 1.9 - - - +
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Residues in contact with LEU 237 (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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207A THR 4.2 0.9 - - - +
208A THR* 3.6 37.0 - - - +
209A LEU* 3.8 28.7 - - + +
233A GLY 4.9 1.1 - - - +
234A LEU* 3.2 17.1 + - - +
235A GLN 4.1 4.0 - - - +
236A ALA* 1.3 81.8 - - - +
238A THR* 1.3 60.9 + - - +
241A ASN* 3.5 23.1 - - - +
242A TYR* 4.0 12.3 - - + -
245A PRO* 4.0 7.0 - - + -
246A PHE* 3.7 30.7 - - + -
270A THR* 5.1 0.2 - - - +
271A PRO* 5.8 1.0 - - - +
272A ASP* 3.6 9.5 - - - +
275A VAL* 3.3 17.2 - - + +
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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