Contacts of the strand formed by residues 88 - 90 (chain K) in PDB entry 2VTX
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 MET 88 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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78G ILE 3.8 20.0 - - - +
79G ALA* 3.5 20.6 - - + -
80G THR 3.4 22.4 - - - +
81G LEU* 4.0 3.4 - - - -
86G LEU* 3.7 12.9 - - + +
89G ALA* 3.7 29.2 - - + -
91G MET* 3.9 9.6 - - + -
49K THR* 4.5 3.6 - - - -
50K VAL 3.2 12.6 - - - +
51K CYS* 3.3 9.0 - - + +
81K LEU* 3.4 7.4 - - - +
86K LEU* 3.3 25.2 + - - +
87K PRO* 1.3 79.8 - - - +
89K ALA* 1.3 76.1 + - - +
90K THR* 4.4 7.9 - - - +
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Residues in contact with ALA 89 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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88J MET* 3.7 36.1 - - + -
90J THR* 4.9 1.3 - - - +
49K THR* 3.4 6.1 - - - -
50K VAL* 2.9 31.5 + - + +
79K ALA* 4.7 0.4 - - + -
81K LEU* 3.8 4.0 - - + +
86K LEU* 5.0 1.1 - - + -
88K MET* 1.3 81.2 - - - +
90K THR* 1.3 64.5 + - - +
91K MET* 3.7 15.8 + - + +
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Residues in contact with THR 90 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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89G ALA* 4.8 1.4 - - - +
90G THR* 2.7 32.7 + - + +
91G MET* 4.2 8.9 - - - +
92G VAL* 4.0 32.5 - - + +
90J THR* 2.7 36.3 + - - +
48K ARG 3.7 10.5 - - - +
49K THR* 4.7 3.1 - - + +
88K MET* 4.4 4.3 - - - +
89K ALA* 1.3 75.9 - - - +
91K MET* 1.3 63.0 + - - +
92K VAL* 4.2 5.6 - - + -
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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