Contacts of the strand formed by residues 76 - 80 (chain A) in PDB entry 2IVF
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 76 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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74A TRP* 3.8 4.9 - - - +
75A ASP* 1.3 83.8 - - + +
77A VAL* 1.3 70.9 + - - +
78A ASN* 2.9 32.2 + - - +
97A TYR* 3.5 0.5 - - - -
98A VAL* 2.9 51.6 + - + +
676A ARG 4.5 2.8 + - - -
677A SER* 2.6 31.1 + - - +
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Residues in contact with VAL 77 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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74A TRP* 3.4 26.2 - - + +
76A LYS* 1.3 84.0 - - - +
78A ASN* 1.3 70.6 + - - +
95A TYR* 3.5 44.0 - - + -
96A VAL 3.1 8.3 - - - +
97A TYR* 3.7 17.5 - - + -
349B LEU* 4.2 11.9 - - + -
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Residues in contact with ASN 78 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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76A LYS* 2.9 45.1 + - - +
77A VAL* 1.3 78.4 + - - +
79A TRP* 1.3 65.0 + - - +
94A PHE 3.6 2.1 - - - +
95A TYR* 3.6 3.3 - - - -
96A VAL* 2.8 31.1 + - - +
98A VAL* 4.2 1.9 - - - +
675A ASP* 3.1 26.0 + - - +
676A ARG 4.9 0.8 + - - -
677A SER* 3.1 27.8 + - - +
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Residues in contact with TRP 79 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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78A ASN* 1.3 76.7 - - - +
80A GLY* 1.3 59.0 + - - +
93A LYS* 3.5 43.5 - - + -
94A PHE 3.5 6.7 - - - -
95A TYR* 3.4 35.7 - + - -
96A VAL* 4.1 1.3 - - - -
109A ALA* 3.7 4.3 - - + -
111A GLN* 3.5 11.0 - - - -
656A TYR* 5.9 0.2 - - - -
673A PHE* 3.8 27.4 - + + +
675A ASP* 3.0 30.5 + - - +
677A SER* 4.2 2.9 + - - -
763A LYS 3.0 21.2 + - - -
764A LYS 3.0 24.9 + - - -
765A GLU 3.5 16.4 - - - -
766A GLY* 3.4 13.1 - - - -
1977A MES 6.0 0.2 - - - -
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Residues in contact with GLY 80 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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79A TRP* 1.3 76.4 - - - +
81A SER* 1.3 62.5 + - - -
92A CYS 3.7 0.2 - - - +
93A LYS* 3.7 2.4 - - - +
94A PHE* 2.7 44.6 + - - +
96A VAL* 3.5 17.5 - - - +
656A TYR* 4.1 8.7 - - - -
672A THR* 4.5 0.2 - - - +
673A PHE 4.0 7.8 - - - +
674A VAL* 4.3 4.3 - - - -
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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