Contacts of the helix formed by residues 197 - 202 (chain D) in PDB entry 4F2N
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 TYR 197 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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62C HIS* 6.2 0.2 - - - -
54D GLN* 3.2 7.9 - - - -
192D VAL* 3.9 5.8 - - - -
193D TRP 3.6 20.0 - - - -
194D GLU* 3.2 23.5 + - - +
196D ALA* 1.3 79.9 - - - +
198D TYR* 1.3 61.8 + + - +
200D ASP* 3.3 2.0 + - - -
201D PHE* 2.7 43.0 + - + +
202D GLU 3.3 23.3 - - - -
203D ASN* 4.4 4.1 + - - -
205D ARG* 2.9 65.5 + - + +
208D TYR* 3.5 48.5 - + + -
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Residues in contact with TYR 198 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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54C GLN* 5.1 0.4 - - - -
57C LEU* 3.8 26.6 - - + +
62C HIS* 2.7 32.3 + + - -
195C HIS* 3.5 35.8 + - + +
198C TYR* 3.9 34.3 - + + -
199C LYS* 4.5 16.9 + - + +
54D GLN* 3.5 0.8 + - - -
194D GLU* 2.9 27.7 + - + +
195D HIS 4.3 1.6 + - - -
197D TYR* 1.3 83.5 - + - +
199D LYS* 1.3 59.8 + - - +
202D GLU* 2.9 65.3 + - + +
203D ASN* 3.6 3.5 + - - -
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Residues in contact with LYS 199 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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198C TYR* 4.5 9.3 + - + +
199C LYS* 5.3 10.9 + - - +
202C GLU* 2.7 30.2 + - + +
51D SER* 4.4 1.1 - - - +
53D ARG* 3.4 25.8 - - + +
54D GLN* 3.1 39.9 + - + +
57D LEU* 4.3 9.4 - - + -
198D TYR* 1.3 78.5 - - - +
200D ASP* 1.3 68.1 + - - +
202D GLU* 4.9 3.8 + - - +
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Residues in contact with ASP 200 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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49D VAL 3.6 4.7 - - - +
50D MET* 3.3 9.7 - - - +
51D SER* 2.5 51.9 + - - -
54D GLN* 3.2 19.2 + - + +
197D TYR* 3.3 2.7 + - - +
199D LYS* 1.3 83.0 - - - +
201D PHE* 1.3 80.7 + - + +
202D GLU* 3.8 1.6 - - - -
204D ARG* 3.8 9.9 + - - -
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Residues in contact with PHE 201 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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49D VAL* 4.1 20.9 - - + -
50D MET* 6.2 1.1 - - + -
197D TYR* 2.7 27.9 + - + +
200D ASP* 1.3 92.1 - - + +
202D GLU* 1.3 72.9 + - - +
204D ARG* 2.9 64.8 + - - +
207D ASP* 4.0 1.3 - - + -
208D TYR* 3.7 46.7 - + + -
211D GLU* 3.6 42.4 - - + -
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Residues in contact with GLU 202 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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53C ARG* 2.8 38.8 + - - -
57C LEU* 3.6 22.6 - - + +
199C LYS* 2.7 30.5 + - - +
197D TYR* 3.3 12.1 - - - -
198D TYR* 2.9 50.0 + - + +
199D LYS 5.1 2.7 - - - +
200D ASP 5.5 0.4 - - - -
201D PHE* 1.3 80.2 - - - +
203D ASN* 1.3 68.7 + - - +
204D ARG* 3.2 8.4 + - - +
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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