Contacts of the strand formed by residues 104 - 108 (chain L) in PDB entry 1XFB
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 VAL 104 (chain L).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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19L ILE* 4.2 4.5 - - + +
22L ARG* 3.8 39.0 - - + +
23L ILE* 3.7 24.5 - - + -
75L GLY 2.9 19.7 + - - +
76L GLY* 3.2 1.6 - - - -
77L VAL* 2.9 27.4 + - - -
98L ILE* 4.2 1.3 - - - +
102L GLY 4.8 0.7 - - - +
103L ILE* 1.3 75.3 - - - +
105L VAL* 1.3 62.9 + - - +
144L ASP* 3.8 26.7 - - + +
145L PHE* 3.6 21.8 - - + -
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Residues in contact with VAL 105 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
77L VAL 3.8 2.2 - - - -
79L PHE* 3.6 24.0 - - + -
84L LEU* 3.9 20.2 - - + -
95L VAL* 4.0 11.4 - - + +
98L ILE* 3.9 16.8 - - + -
99L GLN* 3.7 29.8 - - + -
103L ILE 4.3 1.1 - - - +
104L VAL* 1.3 76.0 - - - +
106L GLY* 1.3 62.0 + - - +
142L GLY 3.3 19.1 + - - +
143L ALA* 4.0 4.3 - - - -
144L ASP* 2.8 28.9 + - - -
145L PHE* 3.2 10.1 - - - -
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Residues in contact with GLY 106 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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77L VAL 2.9 11.2 + - - -
78L ILE* 4.1 4.0 - - - -
79L PHE* 2.6 38.9 + - - +
84L LEU* 5.0 0.2 - - - +
105L VAL* 1.3 77.0 - - - +
107L ILE* 1.3 58.9 + - - -
143L ALA* 4.4 0.2 - - - -
145L PHE* 2.9 28.7 - - - -
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Residues in contact with ILE 107 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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78L ILE* 4.3 3.3 - - - +
79L PHE* 3.4 17.7 - - + +
81L HIS* 4.1 17.0 - - - +
84L LEU* 4.1 21.5 - - + -
106L GLY* 1.3 75.3 - - - +
108L LYS* 1.3 71.2 + - - +
109L VAL* 4.3 1.3 - - + -
138L TYR* 3.8 35.2 - - + -
143L ALA* 3.6 24.7 - - + -
145L PHE 3.2 17.3 + - - +
146L ALA* 3.2 17.7 - - + +
147L LYS 3.0 21.0 + - - -
183L ILE* 4.8 5.2 - - + -
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Residues in contact with LYS 108 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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34L ASP* 3.5 53.6 + - + +
35L GLU* 5.1 0.4 - - - +
36L SER* 4.2 20.4 + - - +
39L SER* 5.3 0.8 + - - -
78L ILE* 4.1 1.6 - - - +
79L PHE 3.2 9.1 + - - +
80L PHE* 4.7 13.2 - - + -
81L HIS* 5.0 5.5 + - - +
107L ILE* 1.3 80.7 - - - +
109L VAL* 1.3 60.4 + - - +
110L ASP* 3.5 37.6 - - - +
134L ARG* 4.5 3.8 + - - -
138L TYR* 4.9 1.7 + - - -
147L LYS* 3.4 19.2 - - - +
149L ARG* 5.7 2.9 - - - +
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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