Contacts of the helix formed by residues 315 - 320 (chain C) in PDB entry 3PII
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 LYS 315 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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311C GLN* 3.2 35.2 - - + +
312C PRO* 2.9 24.5 + - + +
314C GLU* 1.3 79.0 + - + +
316C ILE* 1.3 64.9 + - - +
317C ASN 3.3 2.0 - - - -
318C GLU* 2.7 51.3 + - + +
319C VAL* 3.1 14.4 + - + +
322C ARG* 6.2 0.7 - - - +
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Residues in contact with ILE 316 (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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4C ALA* 4.2 18.2 - - + -
13C LEU* 4.3 15.5 - - + -
15C ILE* 5.3 5.4 - - + -
37C VAL* 4.1 14.8 - - + -
120C TYR* 3.7 38.1 - - + +
312C PRO 3.9 2.0 + - - -
313C LEU* 3.0 26.3 + - + +
314C GLU* 3.1 4.2 - - - +
315C LYS* 1.3 76.1 - - - +
317C ASN* 1.3 62.3 + - - +
319C VAL* 2.9 23.7 + - + +
320C PHE* 3.1 38.7 + - + -
334C LEU* 4.4 9.9 - - + -
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Residues in contact with ASN 317 (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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12C PRO* 3.6 17.3 - - + +
13C LEU* 2.7 64.6 + - - +
15C ILE* 5.7 2.2 - - - +
314C GLU 4.6 4.1 + - - +
315C LYS 3.3 0.6 - - - -
316C ILE* 1.3 80.9 - - - +
318C GLU* 1.3 64.1 + - - +
320C PHE* 3.6 14.9 + - - +
321C ASP* 3.3 19.4 - - - +
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Residues in contact with GLU 318 (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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315C LYS* 2.7 49.9 + - + +
317C ASN* 1.3 78.3 - - - +
319C VAL* 1.3 59.8 + - + +
321C ASP* 2.8 27.6 + - + +
322C ARG* 3.2 31.6 + - + +
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Residues in contact with VAL 319 (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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37C VAL* 4.9 10.5 - - + -
311C GLN* 4.2 25.1 - - + -
315C LYS* 3.3 19.7 - - + +
316C ILE* 2.9 16.3 + - + +
318C GLU* 1.3 73.0 - - + +
320C PHE* 1.3 57.9 + - - +
321C ASP 2.8 11.0 + - - -
322C ARG* 3.3 16.5 - - - +
323C MET* 3.0 20.7 + - + +
328C ILE* 3.6 7.9 - - + +
332C VAL* 3.6 39.0 - - + -
334C LEU* 5.1 2.0 - - + -
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Residues in contact with PHE 320 (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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13C LEU* 4.2 26.7 - - + -
37C VAL* 3.6 24.0 - - + -
41C ASP* 3.9 19.3 - - + -
42C LEU* 3.8 41.8 - - + +
45C ALA* 4.5 12.1 - - + -
46C HIS* 5.7 3.3 + + + +
59C PRO* 5.5 1.6 - - + -
120C TYR* 4.0 6.1 - + - -
316C ILE* 3.1 36.3 + - + -
317C ASN* 3.9 14.6 - - - +
318C GLU 3.3 0.6 - - - -
319C VAL* 1.3 73.9 - - - +
321C ASP* 1.3 59.2 + - - +
323C MET* 3.7 17.3 - - - -
324C LEU* 3.6 20.1 + - - +
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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