Contacts of the helix formed by residues 284 - 288 (chain C) in PDB entry 4U8T
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 ILE 284 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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282C PHE 3.5 15.3 - - - +
283C LEU* 1.3 78.3 - - - +
285C PRO* 1.3 64.7 - - + +
286C ALA* 3.8 6.7 - - + +
287C ASN* 3.1 34.6 + - + +
289C MSE 2.9 23.6 + - - -
290C LYS 2.8 14.0 + - - +
291C PRO 5.6 0.2 - - - +
292C VAL* 3.5 31.2 - - + +
295C SER* 5.3 0.9 - - - +
299C GLN* 4.1 8.1 - - + +
300C GLU 4.1 19.3 - - - +
301C ILE* 4.5 12.8 - - + -
302C PRO* 4.3 16.4 - - + -
305C ILE* 4.7 5.2 - - + -
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Residues in contact with PRO 285 (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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208A LYS* 5.5 1.2 - - - -
211A SER* 3.3 17.1 + - - +
244A ASN* 3.4 26.5 - - + +
245A LEU* 3.5 41.0 - - + +
283C LEU 3.2 11.9 - - - +
284C ILE* 1.3 87.2 - - + +
286C ALA* 1.3 60.7 + - - +
287C ASN 3.1 0.9 + - - -
288C ASP 3.6 6.4 + - - -
289C MSE 3.8 14.4 + - - -
302C PRO* 4.3 9.2 - - + -
305C ILE* 4.2 13.0 - - + -
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Residues in contact with ALA 286 (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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208A LYS* 3.6 31.8 + - - +
211A SER* 3.7 14.8 - - - +
212A GLU* 3.8 33.0 - - + +
284C ILE* 3.3 7.9 - - + +
285C PRO* 1.3 77.7 - - - +
287C ASN* 1.3 57.5 + - - +
288C ASP 3.4 2.1 + - - -
299C GLN* 5.2 4.1 - - - +
300C GLU 6.0 0.7 - - - +
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Residues in contact with ASN 287 (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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284C ILE* 3.1 25.6 + - + +
286C ALA* 1.3 79.1 - - - +
288C ASP* 1.3 70.2 + - - +
289C MSE 3.1 2.2 - - - -
290C LYS* 3.1 44.7 + - - +
291C PRO 5.3 0.6 + - - -
294C ASN 3.8 15.0 + - - -
295C SER* 4.6 5.1 + - - +
296C ARG* 5.1 6.1 + - - +
299C GLN* 3.7 29.2 + - - +
1Q C 5.7 0.8 + - - -
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Residues in contact with ASP 288 (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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204A PHE* 3.8 35.2 - - + -
245A LEU* 5.4 2.9 - - - +
262A HIS* 2.9 35.8 + - - -
285C PRO 3.6 5.3 + - - -
286C ALA 3.4 4.0 + - - -
287C ASN* 1.3 78.4 - - - +
289C MSE 1.3 71.3 + - - +
290C LYS* 3.1 15.0 + - + +
-2R G 4.6 8.3 + - - -
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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