Contacts of the helix formed by residues 301 - 308 (chain X) in PDB entry 3F6E
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 ASP 301 (chain X).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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86X TRP* 5.9 1.6 - - - -
89X HIS* 2.7 35.6 + - + +
150X PRO* 3.6 13.8 - - + +
299X THR* 3.0 10.7 + - - +
300X CYS* 1.3 78.6 - - - +
302X PRO* 1.3 70.0 - - - +
303X LEU* 2.9 30.9 + - - +
304X GLU* 2.9 37.0 + - + +
305X ALA 3.2 9.0 + - - -
307X ARG* 5.4 0.9 + - - -
315X VAL* 4.3 2.5 - - - -
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Residues in contact with PRO 302 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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150X PRO* 4.1 12.6 - - + -
300X CYS 3.8 7.4 - - - +
301X ASP* 1.3 87.2 - - - +
303X LEU* 1.3 63.0 + - + +
305X ALA* 3.2 1.8 + - + +
306X ALA* 2.9 26.2 + - - +
315X VAL* 3.9 28.5 - - + -
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Residues in contact with LEU 303 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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86X TRP* 4.0 29.2 - - + +
301X ASP* 2.9 18.2 + - - +
302X PRO* 1.3 79.6 - - + +
304X GLU* 1.3 61.6 + - - +
306X ALA* 4.0 6.3 - - + +
307X ARG* 3.2 41.6 + - - +
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Residues in contact with GLU 304 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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87X ASN 5.6 0.3 - - - +
89X HIS* 3.3 21.9 + - - -
210X ASP* 4.2 8.1 - - - +
275X ALA* 3.6 13.2 + - - +
276X PRO* 3.6 35.7 - - + +
277X VAL* 5.1 3.8 + - - +
279X ARG* 4.7 3.6 + - - -
299X THR* 2.6 29.4 + - - +
300X CYS 4.8 0.2 + - - -
301X ASP* 2.9 24.3 + - + +
303X LEU* 1.3 76.8 - - - +
305X ALA* 1.3 64.5 + - - +
307X ARG* 3.3 27.8 + - - +
308X ALA* 3.2 24.6 + - - +
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Residues in contact with ALA 305 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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297X SER* 5.7 0.7 - - - -
299X THR* 3.8 14.7 - - + +
301X ASP 3.2 3.4 + - - +
302X PRO* 3.7 5.4 - - + +
304X GLU* 1.3 79.1 - - - +
306X ALA* 1.3 63.1 + - - +
308X ALA* 3.8 12.7 + - - +
313X ALA* 3.8 23.2 - - + +
315X VAL* 3.7 29.4 - - + -
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Residues in contact with ALA 306 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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302X PRO 2.9 16.0 + - - +
303X LEU* 4.0 9.2 - - + +
304X GLU 3.2 0.2 - - - -
305X ALA* 1.3 78.3 - - - +
307X ARG* 1.3 62.0 + - + +
308X ALA 3.7 4.0 + - - +
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Residues in contact with ARG 307 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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276X PRO* 3.7 23.4 - - - +
277X VAL 4.5 3.8 - - - +
279X ARG* 3.5 30.7 - - - +
301X ASP* 5.4 0.8 + - - -
303X LEU* 3.2 43.5 + - - +
304X GLU* 3.3 19.3 + - - +
306X ALA* 1.3 78.5 - - + +
308X ALA* 1.3 70.0 + - - +
309X PRO* 3.2 9.9 - - - +
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Residues in contact with ALA 308 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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277X VAL* 3.5 29.4 - - + -
297X SER* 5.9 3.1 - - - -
304X GLU 3.2 13.8 + - - +
305X ALA* 4.1 9.1 - - - +
306X ALA 3.5 7.0 - - - +
307X ARG* 1.3 76.5 - - - +
309X PRO* 1.3 69.6 - - + +
310X MET* 3.4 18.0 + - - +
311X GLY 5.7 0.9 - - - +
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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