Contacts of the helix formed by residues 1993 - 1996 (chain X) in PDB entry 3SU8
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 PRO1993 (chain X).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1707X LEU* 5.4 6.1 - - + -
1711X PHE* 3.9 34.1 - - + -
1989X ILE 3.6 9.4 - - - +
1990X ILE 4.5 1.6 - - - +
1991X LYS 3.9 1.6 - - - +
1992X ASN* 1.4 84.0 - - - +
1994X GLN* 1.4 51.8 + - - +
1995X PHE 3.1 6.1 - - - -
1996X VAL* 3.2 5.3 + - + +
1997X PHE* 2.7 57.5 + - + +
1999X VAL* 4.7 5.8 - - + -
2001X THR* 4.7 11.2 - - + +
2006X ASP* 5.0 0.2 - - - +
2009X LEU* 3.8 24.0 - - + -
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Residues in contact with GLN1994 (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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1566X LEU* 3.3 2.6 - - - +
1574X ARG* 2.7 42.8 + - - +
1794X LEU* 5.1 5.9 - - - +
1992X ASN* 3.2 23.4 + - - +
1993X PRO* 1.4 74.5 - - + +
1995X PHE* 1.4 60.4 + - - +
1996X VAL 3.3 0.4 - - - -
1997X PHE 3.5 7.9 - - - +
1999X VAL* 2.9 31.5 + - + +
2000X GLN* 4.3 4.8 - - - +
2001X THR* 3.4 27.8 - - + +
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Residues in contact with PHE1995 (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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1566X LEU* 3.5 9.5 - - - +
1571X TYR* 3.5 26.9 - - - +
1574X ARG* 3.4 31.5 - - + +
1575X ILE* 3.7 23.5 - - + +
1578X PRO* 4.5 17.3 - - + -
1988X ASN* 3.5 31.0 - - + -
1989X ILE* 3.9 18.4 - - + -
1992X ASN* 3.4 48.4 + - + +
1993X PRO 3.1 0.8 - - - -
1994X GLN* 1.4 77.3 - - - +
1996X VAL* 1.3 58.0 + - - +
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Residues in contact with VAL1996 (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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1565X PHE* 3.9 9.9 - - + -
1566X LEU* 3.0 29.4 + - - +
1571X TYR* 3.9 21.0 - - + -
1696X TYR* 6.1 0.2 - - - -
1699X VAL* 3.7 35.0 - - + -
1707X LEU* 4.4 4.3 - - + -
1989X ILE* 3.7 31.2 - - + -
1993X PRO 3.2 5.4 + - - +
1995X PHE* 1.3 81.0 - - - +
1997X PHE* 1.3 87.8 + - + +
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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